Comprehensive Notes: Strength & Conditioning (KIN-494)

Introduction to Strength & Conditioning (KIN-494) - Page 1: Course title slide only.

Page 2–3: What is the PURPOSE of Strength & Conditioning programs? / What if you're not a S&C coach?

• Purpose: Strength & Conditioning programs aim to enhance physical performance, reduce injury risk, improve health, and optimize an individual's or team's athletic potential.

• Broad Application: S&C principles apply not only to elite athletes but also to general fitness enthusiasts, rehabilitation clients, and anyone looking to improve physical capabilities, demonstrating its relevance beyond a dedicated S&C coaching role.

Page 4–6: The Art of Coaching / Coach Profiles

• The Art of Coaching: Beyond scientific principles, coaching involves adapting methods to individual personalities, fostering positive relationships, motivating athletes, and making intuitive decisions based on observation and experience. This artistic aspect acknowledges the human element in athletic development.

• Coach Profiles: Exploration of different coaching styles and philosophies (e.g., Coach Cochran, Coach Ballou, Rhea) highlights the diverse approaches to S&C, emphasizing that effective coaching requires interpreting both the objective science and the subjective needs of athletes.

Page 7: The Science of Coaching

• Transition: The move from the art to the science of coaching emphasizes the critical role of evidence-based practice and data-driven decision making in achieving optimal coaching effectiveness and outcomes.

Page 8: What is “Evidence-Based”? (EB coaching)

• Definition: Evidence-based coaching involves the systematic application of empirical evidence and scientific studies to inform and guide decision-making and actions in training.

• Purpose:
  1) To make informed decisions at every stage of program design and implementation.
  2) To guide actions and choices by relying on proven methods rather than assumptions.

• Contrast: This approach moves beyond relying solely on anecdotal evidence, personal success stories, long-standing but unproven traditions, or mere intuition, ensuring practices are grounded in verifiable research. Types of empirical evidence include randomized controlled trials (RCTs), systematic reviews, and meta-analyses.

Page 9: 7 Questions to Ask About Evidence

1) Is it relevant?

• Which population was studied? (e.g., age, training status, sport) - This helps determine if the findings are applicable to your specific athletes.
  2) How many subjects were used?

• A larger sample size generally provides more robust and generalizable results.
  3) How long did the study take?

• Duration impacts the type of adaptations that can be observed (e.g., short-term neural vs. long-term hypertrophy).
  4) When was it published?

• Newer research often builds upon or refines older findings; staying current is important.
  5) Has it been repeated?

• Replication by other researchers strengthens the validity and reliability of the findings.
  6) What specific strategy was used?

• How was it programmed? (e.g., sets, reps, load, tempo)

• When was it programmed? (e.g., periodization, timing within a microcycle) - Detailed methodology is crucial for practical application.
  7) What were the study results? Were they meaningful?

• Consider both statistical significance ($p$ values) and practical significance of the outcomes.

  • Ultimate Question: Does it align with your context and the unique needs of your athletes?

Page 10: Example of Evidence-Based Coaching

• Source Example: bradschoenfeldphd – Topic: Builds Muscle (Hypertrophy continuum)

• Hypertrophy Continuum: This concept suggests that muscle growth (hypertrophy) can occur across a broad spectrum of repetition ranges, with different mechanisms contributing to adaptation.

  • $15+$ reps: Often associated with higher metabolic stress and muscle damage.

  • $8–12$ reps: Traditionally considered the optimal range for mechanical tension and moderate metabolic stress.

  • $3–5$ reps: Focuses on high mechanical tension and can still elicit hypertrophy, especially in conjunction with appropriate volume.

• Source: Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW. Strength and hypertrophy adaptations between low-vs. high-load resistance training: a systematic review and meta-analysis. J Strength Cond Res. $2017;31(12):3508-23$.

• Visuals in Slide: A comparison of slow vs fast adaptations across different loading strategies (Accommodating resistance vs Traditional resistance).

  • Accommodating Resistance: Training methods (e.g., bands, chains) that vary resistance throughout the range of motion, often providing less resistance at the weakest points and more at the strongest. This can maintain consistent bar velocity.

  • Traditional Resistance: Standard free weight or machine-based training where the resistance is constant throughout the movement.

• Data Highlights (from Table 3 and related data):

  • Pre vs Post measurements show improvements in strength and endurance with accommodating resistance vs traditional resistance.

  • Example magnitudes (Mean $\pm$ SD) suggest significant gains in strength and power with specific protocols; statistical significance reported as \text{p}<0.001 for some comparisons.

• Takeaway: Evidence-informed coaching utilizes systematic comparisons of load, tempo, and methods to optimize outcomes, moving beyond reliance on tradition alone by quantifying the effects of different training variables.

Page 11–12: What is “Data-Driven”? / Quantitative & Qualitative Data

• Definition: Data-driven coaching involves the systematic collection and analysis of both quantitative (objective) and qualitative (subjective) data to inform and guide training decisions.

• Purposes:
  1) To inform and guide the design of training programs.
  2) To make timely adjustments to daily or weekly programming based on athlete responses.

• Emphasis: This approach integrates measurable numerical data with insights into human factors (e.g., feelings, perceptions) to comprehensively guide programming and athlete management.

Page 12–13: Data-Driven Coaching – Quantitative & Objective

• Examples: Squat – Volume vs. Intensity (visual data showing percentage of $1RM$ across sets/loads and corresponding velocity/trajectory).

• Performance Metrics: Key objective metrics tracked include percentage of $1RM$, repetitions, and movement velocity.

  • VmaxPro: An example of a device used to track velocity-based training variables, providing real-time feedback on bar speed.

• Training Targets: Personal records (PRs) and velocity profiles are utilized to set precise training targets, ensuring appropriate intensity and load.

• Key Concept: Data-driven design leverages objective performance metrics (like velocity, load, and total volume) to tailor training intensity and volume effectively, often for specific kinetic profiles.

Page 14: Data-Driven Coaching – Quantitative & Objective (Tonnage and Peak Metrics)

• Longitudinal Tracking: Total tonnage (load $\times$ reps $\times$ sets) and overall peak metrics across macrocycles are tracked for compound lifts like squat, bench press, and deadlift. This provides insight into accumulated training stress.

• Examples Observed:

  • SQUAT: $6,265$ kg total tonnage; macrocycle peaks around $6,000–6,363$ kg; loads expressed as percentages (e.g., $104\%$).

  • BENCH PRESS: $4,775$ kg total tonnage; peak weeks around $4,700–4,700$ kg ( $102–104\%$).

  • DEADLIFT: $3,988$ kg total tonnage; peaks around $5,663$ kg ($70\%$).

  • TOTAL: $15,028$ kg baseline; peaks around $16,363$ kg ($92\%$).

• Additional Metrics: Acute:Chronic Workload Ratio (ACWR), average and peak intensity, and Rate of Perceived Exertion (RPE) across macrocycles are monitored, with values such as $\sim84\%$ (A2.0) and RPEs around $4.0–8.0$ in examples.

• Purpose: These metrics help track longitudinal training stress, load distribution, and athlete readiness across macrocycles, enabling informed adjustments to prevent overtraining and optimize performance.

Page 15–17: Data-Driven Coaching – Qualitative & Subjective

• Qualitative Tracking: Includes daily training details like reps, loads, and RPE based on a Reps in Reserve (RIR) scheme.

• RIR Scale: An RPE of $10$ (RIR $0$) means no more reps could be performed; RPE of $8$ (RIR $2$) means $2$ reps were left in the tank.

• Example Entries (Day 3 Training):

  • Squat warm-ups: RPE scales (e.g., RPE $6–7$) and loads (e.g., $85, 105, 120, 135$ kg) with outcomes like "Could not do more reps / load" or "Could do one more repetition."

  • Deadlift warm-ups: Loads (e.g., $105, 130, 150, 167.5$ kg) and RPE outcomes (ranging $\sim4–8.5$).

• Pre-Workout Survey: Athletes provide subjective assessments of readiness, sleep quality, stress levels, hydration status, and soreness (squat and deadlift soreness tracked separately), generating a composite readiness score (e.g., $70–83$).

• Daily Subjective Updates: Include training performance comments, enjoyment levels, and notes on pain or health status (e.g., sick status affecting performance).

• Purpose: This qualitative data, when combined with objective metrics, provides a holistic view of the athlete's state, allowing coaches to adjust daily programming and expectations effectively, ensuring athlete well-being and consistent progress.

Page 18: Key Differences Between Team Coaching & Individual Coaching

• Team Dynamics vs Individual Coaching: Team coaching factors in group cohesion, while individual coaching is hyper-personalized.

• Variability in Fitness Levels: Teams often have a wider range of fitness, requiring scalable programs; individual coaching can precisely target a single athlete's specific needs.

• Sport-Specific Training Demands: Programs for teams balance common sport demands with individual adaptations; individual coaching can be entirely tailored to one athlete's role or position.

• Communication & Coordination Needs: Team coaching demands efficient communication with many athletes and other staff (e.g., head coach, medical team); individual coaching focuses on a deeper coach-athlete dialogue.

• Injury Mitigation & Rehabilitation Considerations: Team approaches often use general injury prevention protocols; individual coaching can integrate highly specific prehabilitation or rehabilitation plans.

• Periodization Differences: Team periodization often aligns with a collective competitive schedule; individual periodization can be more flexible based on an athlete's personal peak performance goals.

• Takeaway: Team coaching emphasizes coordination and uniformity across athletes, along with managing group dynamics. Individual coaching, conversely, prioritizes customization and tailoring the program to a singular athlete’s unique needs, responses, and goals.

Page 19: Training Variables and Strategies Used to Elevate Performance

• Core Focus: Training axes revolve around Force, Velocity, and Power due to their direct impact on athletic performance.

• Concepts:

  • FORCE: The ability to produce tension or exert effort against a resistance. In S&C, this ranges from maximal isometric strength (no movement) to dynamic maximal strength (moving heavy loads) to general strength development.

  • SPEED/VELOCITY: The rate at which an object or body segment moves. Training focuses on enhancing movement velocity, characterized by velocity zones, and its relation to specific training outcomes (e.g., high velocity for power, low velocity for maximal strength).

  • POWER: The productive combination of force and velocity production ($P = F \times v$). It represents the rate at which work is done, crucial for explosive movements.

• Underpinning Idea: The Force–Velocity Curve (and its inverse relationship) guides the selection of loads and movement speeds for targeted adaptations. It illustrates that as force requirements increase, the velocity at which the movement can be performed decreases, and vice-versa.

• Related Terms: Applied force, movement velocity, and the integration of speed-strength (moderate force, moderate velocity) and speed-power (high force, high velocity) work.

Pages 20–23: FORCE, POWER, VELOCITY and the Force–Velocity Curve

• Page 20–21: FORCE and VELOCITY concepts along the Force–Velocity Curve. The curve fundamentally demonstrates an inverse relationship: as the load (and thus required force) increases, the maximal speed (velocity) at which a movement can be performed decreases, and vice versa. Training on different points of this curve targets specific adaptations, transitioning from high-force/low-velocity (maximal strength) to high-velocity/low-force (speed/power exercises).

• Page 22: Velocity-based loading zones (movement velocity as %1RM). Different velocity ranges correspond to different training adaptations:

  • >1.0 m/s: Primarily targets speed-strength and power development (lower loads, higher velocity).

  • 0.75-1.0 m/s: Focuses on velocity-based strength and power (moderate loads and velocities).

  • 0.5-0.75 m/s: Emphasizes strength-speed and maximal strength (heavier loads, moderate to low velocity).

  • <0.5 m/s: Targets maximal strength and limit strength (very heavy loads, low velocity).

Pages 24–26: FORCE & POWER Categories by Exercise Types

• Page 24: Squat-related force and power movements (e.g., Squat variants like back squat, front squat, box squat) are used to develop the lower body's force production capabilities with varying velocity targets based on load.

• Page 25: Power-oriented lifts like Power Clean, Power Snatch, Loaded Squat Jump, and Sled Sprint specifically train the ability to produce high force at high velocities, crucial for explosive performance.

• Page 26: Plyometric and jump variations (Box Jumps, Hurdle/Jumps, Depth Jumps, Single-Leg Hops) are used to develop reactive strength and maximal velocity by emphasizing short ground contact times and high contractile velocities.

• Practical Implication: Coaches utilize a diverse spectrum of exercises, from heavy resistance training to high-velocity plyometrics, to develop force production across the entire range of speeds an athlete might encounter in their sport.

Page 27–28: Sprinting and Reverse Band Training

• Page 27: Sprinting is included under the FORCE/VELOCITY framework as a primary modality for developing velocity and speed-endurance. It demands high rates of force production to achieve maximal horizontal velocity.

• Page 28: Reverse bands and other loading systems (e.g., ROGUE, MOAK equipment) are tools used to modulate resistance and velocity. Reverse bands, for example, provide assistance at the bottom (weakest) portion of a lift and gradually reduce assistance as the bar ascends, effectively increasing resistance at the top (strongest) range of motion. This allows training with supramaximal loads or emphasizing speed through a specific range.

• Practical Note: Equipment can strategically alter the effective force-velocity profile during training by changing resistance throughout the range of motion, allowing for targeted adaptations (e.g., overcoming sticking points, enhancing top-end speed).

Page 29–30: Training Methods Overview

• Page 29: Focuses on FORCE-focused and velocity-modified methods, often incorporating portable training solutions (e.g., compact systems for location-based training) to adapt to various environments and athlete needs.

• Page 30: Provides an overview teaser of the different training methods available, hinting at the complexity and variety within S&C.

• Core Take-Home: Numerous training methodologies exist within S&C; the optimal selection depends critically on the athlete’s specific needs, sport demands, current training status, and environmental context.

Pages 31–33: 1) Resistance Training – Targets

• Page 31–32: Resistance Training is defined as any exercise that causes muscles to contract against an external resistance (e.g., weights, bands, bodyweight, machines), leading to increases in strength, power, hypertrophy, and/or endurance.

• Page 33: Targets for Resistance Training:

  • Strength: The ability to produce force.

  • Power: The rate of doing work (force x velocity).

  • Hypertrophy: Increase in muscle size.

  • Muscle Endurance: The ability of a muscle or group of muscles to sustain repeated contractions against a submaximal resistance.

  • Neuromuscular Coordination: The ability of the nervous system and muscles to work together efficiently.

  • Muscle Stability & /or Balance: The ability to maintain posture and control movement.

  • Muscle Flexibility & Joint Mobility: The range of motion around a joint and the ability of muscles to lengthen.

• Practical Implication: The specific training goals explicitly determine the optimal exercise selection, loading schemes (sets, reps, intensity), rest intervals, and progression strategies within a resistance training program.

Page 34–35: Power vs. Strength / Energy Concepts

• Page 34: Conceptual comparison between Power and Strength uses energy/kinetic relationships to illustrate mechanics:

  • Initial velocity term ($V_o = 0$) for exercises starting from a dead stop.

  • Net work versus force ($N = -W$) indicates energy transfer.

  • Weight equals mass times gravity ($w = mg$).

  • Kinetic energy ($KE$) and gravitational potential energy ($PE_g$) considerations in movement planning, especially for understanding the mechanics of lifting and jumping.

• Page 35: Adaptations to resistance training (time course):

  • Short-term (initial weeks): Primarily neural recruitment and coordination improvements. The nervous system becomes more efficient at activating existing muscle fibers, leading to rapid strength gains without significant muscle size change.

  • Intermediate-term (weeks to months): Increased motor unit recruitment, improved firing rates, and mild hypertrophy (muscle growth) begin to occur as the muscle adapts structurally.

  • Long-term (months to years): Motor skill refinement, significant muscle fiber adaptations (e.g., increased cross-sectional area, changes in fiber type characteristics), and enhanced fatigue resistance develop progressively.

Page 36–39: Plyometric Training

• Page 36: Plyometric Training is a form of exercise that involves rapid and powerful movements, often considered under the umbrella of resistance training due to its high-intensity nature.

• Page 37: Targets for Plyometric Training:

  • Stretch-Shortening Cycle (SSC): Optimizing the efficiency of the muscle's ability to first lengthen (eccentric), then immediately shorten (concentric) for greater force production.

  • Power and Explosive Strength: Enhancing the athlete's capacity to produce maximal force in minimal time.

  • Reactive Strength Index (RSI): A measure of an athlete's ability to rapidly change from an eccentric to a concentric muscle action.

  • Reaction Time: Improving the speed of response to a stimulus.

• Page 38: What makes a plyo exercise effective? It engages a coordinated effort of three components:

  • Contractile Component (CC): The active muscle fibers (actin and myosin) that generate force through contraction.

  • Series Elastic Component (SEC): Tendons and connective tissues in series with the muscle, which store and release elastic energy during the eccentric-concentric transition.

  • Parallel Elastic Component (PEC): Connective tissues parallel to the muscle fibers (e.g., fascia, epimysium) that provide passive resistance to stretch.

  • All three work together synergistically during plyometrics to generate high rates of force production.

• Page 39: Stretch Reflex: An involuntary protective response in a muscle that is activated by an external stretch. Muscle spindles (sensory receptors within the muscle) detect the stretch, send input to the spinal cord, which then sends immediate impulses back to the muscle fibers, causing a reflexive, rapid contraction to resist the stretch. This reflex contributes to the potentiation seen in the SSC.

Page 40–41: SSC Development and Visuals

• Page 40: SSC Development stages:

  • Eccentric phase (Loading/Deceleration): The muscle lengthens under tension, storing elastic energy (e.g., lowering into a squat before jumping).

  • Amortization phase (Transition): The brief, crucial time between the eccentric and concentric phases. It should be as short as possible to maximize energy transfer.

  • Concentric phase (Unloading/Acceleration): The muscle shortens, releasing stored elastic energy and actively contracting for powerful movement (e.g., jumping up from the squat).

• Page 41: (Figure references; content not explicitly described in transcript, but would typically illustrate these phases with diagrams of muscle length and force).

Page 42–47: SSC Development Details and RSI Guidelines

• Page 42–43: Figures illustrating movement positions during jumps (e.g., Countermovement Jump (CMJ) vs. Squat Jump (SJ) references). These differentiate jumps where the athlete uses an eccentric pre-stretch (CMJ) from those starting from a static position (SJ).

• Page 45: SSC Development factors influenced by training adaptations include:

  • Fascicle length & Pennation angle: Structural muscle adaptations that affect force transmission.

  • Muscle cross-sectional area (CSA) & Tendon CSA: Influence absolute force production and stiffness.

  • Motor unit (MU) recruitment & Preactivation: Neural adaptations that improve the number and timing of muscle fibers activated.

  • Reflex control & Co-contraction: Improvements in the nervous system's ability to coordinate muscle actions and inhibit antagonists.

  • Maturation: Age-related physiological development that influences SSC capacity.

• Page 46–47: Reactive Strength Index (RSI) thresholds and interpretation (referenced from Flanagan (2021)):

  • <1.5 (Low reactive strength): Athletes in this range should focus on basic strength development and low-level plyometrics to build foundational capacity.

  • $1.5–2.0$ (Moderate): Prepare for moderate-intensity plyometrics.

  • $2.0–2.5$ (Moderate-to-high): Intensive plyometric exercises are appropriate; specific reactive strength training can be emphasized.

  • >2.5–3.0 (High reactive strength): These athletes have well-developed reactive strength; further improvements might have diminishing returns for some sports, so focus may shift to maintaining or integrating with other qualities.

  • >3.0 (World-class): Represents a very high level of reactive strength; significant capacity for further RSI gains is limited.

• Note: RSI is typically calculated by dividing jump height by ground contact time, where a higher score indicates better reactive ability.

Page 48: Potentiation for Power Improvement (PAPE)

• Post-activation potentiation (PAPE) concept: This refers to the phenomenon where a muscle's contractile performance is acutely enhanced as a result of prior contractile activity (e.g., a heavy strength exercise). The underlying physiological mechanism involves increased phosphorylation of myosin light chains, which makes the muscle more sensitive to calcium ions, leading to a stronger and faster contraction. It also involves enhanced motor neuron excitability.

• Practical Approaches:

  • Warm-up strategies: Incorporating dynamic movements and light-to-moderate intensity exercises to prepare the neuromuscular system.

  • Complex Training: Alternating a heavy resistance exercise with a biomechanically similar plyometric or power exercise (e.g., heavy squat followed by box jumps).

  • PAPE (Post-Activation Performance Enhancement) training protocols.

• Considerations: The optimal recovery time between the potentiating stimulus and the subsequent power exercise is crucial and can vary. Factors such as the athlete's sex, absolute strength level, and training experience may influence the magnitude and duration of potentiation effects.

Page 49–53: 3. Speed Training

• Page 49: Introduction to Speed Training, focusing on enhancing the ability to move the body as fast as possible, typically in a straight line over short distances.

• Page 50–51: Targets for Speed Training:

  • Acceleration: The ability to rapidly increase velocity from a static or low-speed start. This phase is characterized by a high proportion of horizontal force application.

  • Maximal Speed: The highest velocity an individual can achieve, typically occurring after the acceleration phase, characterized by near-vertical force application and high stride frequency.

• Page 51: Components of Faster Speed:

  • Sprint speed is fundamentally determined by the interaction of stride length (distance covered per step) and stride rate (number of steps per unit of time).

  • Longer stride length and higher stride rate contribute to greater speed.

  • Ultimately, faster speed is the result of properly directed and high-magnitude forces applied into the ground.

• Page 52–53: Key technique cues for acceleration:

  • Explosive push-off with both legs: Emphasizing horizontal force.

  • Bodyweight distribution: Minimal forward lean (a slight angle), critical for optimal force vectors.

  • Knee angles: Front knee $\sim90^\circ$ to $\sim100^\circ$, rear knee $\sim130^\circ$ at initial push-off.

  • Arm action: Powerful, coordinated, and large arm Range of Motion (ROM) significantly contributes to driving the body forward.

  • Horizontal body drive: Optimizing the angle of the body and forces to propel the mass forward.

• Page 53: Characteristics of maximal speed: Upright posture, high knee lift (driving knees forward and up), short ground contact time (rapid leg turnover), and clear flight phases (time spent airborne between strides).

Page 54–57: Speed – Strength – Explosive Power / Rate of Force Development (RFD)

• Page 54: Conceptual connections among Speed, Strength, and Explosive Power, highlighting how strength provides the foundation for force production, speed dictates how quickly force can be applied, and power is the synthesis of both.

• Page 55: Rate of Force Development (RFD):

  • Definition: A measure of explosive strength, quantifying how rapidly an individual can produce force. It's often measured as the slope of the force-time curve.

  • Significance: A higher RFD translates to greater speed, power, and overall strength performance, particularly in movements that require rapid force application.

  • Manifestation: During the Stretch-Shortening Cycle (SSC), RFD is crucial for optimizing the residual force enhancement, conceptually referenced by the "rubber band analogy" where stored elastic energy is rapidly released.

• Page 56–57: Why RFD matters and how to increase it:

  • Importance: RFD is a key variable in most sports requiring explosive actions (e.g., jumping, throwing, sprinting, changing direction).

  • Strategies to increase RFD:

  • Increase muscle-tendon stiffness: Improves the transmission and storage/release of elastic energy.

  • Increase muscle force production: Develop maximal strength, which increases the potential for rapid force generation.

  • Muscle fiber alterations: Emphasis on training fast-twitch muscle fibers (Type II).

  • Increase neural drive during early SSC phase: Enhancing the nervous system's ability to activate muscles quickly.

  • Improve intra- and inter-muscular coordination: Better synchronization within and between muscles.

  • Emphasis: "Effort is King" – Consistent, maximal effort in training is crucial for stimulating these adaptations.

• Page 58: RFD in powerlifts – identifying the sticking point across lift phases (early vs later phases):

  • Early-phase sticking point examples: Occurs off the floor in deadlifts, or right after starting the concentric phase in squats/bench press (e.g., just out of the hole). This often indicates a need for increased RFD.

  • Later-phase sticking point examples: Occurs near parallel in squats or closer to lockout in bench press/deadlifts. This might indicate issues with sustained force production or specific joint lockout strength.

Page 59–61: 4. Agility Training

• Page 59: Title – Agility Training (RAPTOR section), which often refers to a test or specific training methodology.

• Page 60–61: Targets for Agility Training:

  • Change of Direction (COD) skills: The athletic ability to change direction without a reactive stimulus at speed.

  • Cognitive-perceptual skills: The mental processes involved in processing information, such as pattern recognition, anticipation, and rapid decision-making in dynamic environments.

• Components of Agility:

  • Rate of force production and power: Essential for rapid deceleration and explosive re-acceleration.

  • COD components:

  • Deceleration: The ability to rapidly reduce speed.

  • Reorientation: Adjusting body position and limb placement for the new direction.

  • Explosive acceleration: Rapidly generating force to propel the body in the new direction.

  • Cognitive-perceptual components:

  • Visual scanning: Effectively taking in environmental information.

  • Anticipation: Predicting an opponent's or object's movement.

  • Pattern recognition & Knowledge of the situation: Understanding common scenarios and responses.

  • Decision-making time/accuracy: Speed and correctness of choosing an action.

  • Reaction time: The physical response to a given stimulus.

Page 62–64: Endurance Training

• Page 62: Title – Endurance Training.

• Page 63–64: Targets for Endurance Training:

  • Aerobic Capacity: The maximal rate at which oxygen can be taken up and used by the body during intense exercise ($VO_{2max}$). It's crucial for sustained effort.

  • Local-Muscular Endurance: The ability of specific muscles or muscle groups to perform repeated contractions or sustain a contraction against submaximal resistance over an extended period.

• Page 64: Figure 1: Illustrates blood lactate concentration at different exercise intensities, showing an inflection point (lactate threshold) at approximately $4.0$ mmol/L and $84\%$ $VO_{2max}$, with references to heart rate ($\sim170$ bpm) at this threshold.

• Combined Emphasis: Endurance performance is a complex interplay influenced not only by maximal aerobic capacity ($VO_{2max}$) and lactate threshold but also by factors like running economy, nutritional strategies, and environmental conditions.

Page 65–66: Metabolic Conditioning (MetCon)

• Page 65: Term – MetCon (METabolic CONditioning).

• Page 66: Targets for MetCon:

  • Anaerobic capacity: Enhancing the body's ability to produce energy without oxygen (e.g., phosphagen and glycolytic systems), crucial for high-intensity, short-duration efforts.

  • Aerobic capacity: Improving the body's efficiency in using oxygen for sustained, moderate-intensity work (oxidative system).

  • Concept: MetCon typically blends brief, intense efforts with structured work-to-rest cycles to stress and improve the efficiency and capacity of various metabolic pathways across all energy systems. It aims to improve overall work capacity and recovery between high-intensity bouts.

Page 67–71: Needs Analysis

• Page 67: Question – How do we know what training variables our athletes need? (Answer: Through a systematic Needs Analysis).

• Page 68–71: Needs Analysis for different sports (examples):

  • Purpose: A Needs Analysis provides a structured framework to thoroughly evaluate a sport's metabolic demands, typical movement patterns, and common injury risks. This information is then used to tailor the S&C program specifically to the sport and athlete.

  • Powerlifting:

  • Metabolic/Physiological focus: Primarily relies on the ATP-PC (phosphagen) and Lactic (anaerobic glycolytic) systems for short, maximal efforts. Power-short/long activities are $95–100\%$ anaerobic.

  • Movement analysis: Focus on Squat patterns; hip/knee/ankle movements; scapular mechanics; shoulder external rotation; thoracic & lumbar extension (isometric during lifts).

  • Muscles involved: Gluteus maximus, hamstrings, adductor group, quadriceps, calves, trapezius, serratus anterior, pectoralis minor, etc., all contributing to large compound movements.

  • Injury prevalence and causes: Regions affected include lumbopelvic, shoulder, chest, elbow, hip, knee. Common injuries: muscle pulls, tendonitis, cramps. Causes often related to high training volume/intensity, poor technique, mobility issues, and insufficient recovery.

  • Baseball (Power/Speed sport exemplar):

  • Metabolic/Physiological: High emphasis on the phosphagen and lactic systems for explosive actions (pitching, batting, sprinting).

  • Movement analysis: Complex movements involving shoulder abduction/adduction, external/internal rotation; intricate scapula mechanics; elbow flexion/extension; hip/knee movements (e.g., stride, rotation); ankle dorsiflexion/plantarflexion.

  • Prime movers: Anterior/Posterior deltoids, rotator cuff muscles, pectoralis major, serratus anterior, trapezius, latissimus dorsi, rhomboids, etc., are critical for throwing and hitting.

  • Injury prevalence: High incidence of shoulder (rotator cuff, labrum tears) and elbow (UCL - ulnar collateral ligament) concerns, often due to significant overuse and high-speed rotational forces.

  • References: Bompa & Buzzichelli (2019); Biel (2014); etc., for anatomical and periodization insights.

Pages 72–74: M1 Metabolic Analysis / M2 Movement Analysis

• M1 Metabolic Analysis:

  • Characteristics: Evaluates the specific energy systems (phosphagen, glycolytic, oxidative), primary fuels used, recovery times required, and the adaptations promoted by different training strategies.

  • Application: Matches the acute bout intensity and duration, as well as the total duration of the sport, to its dominant metabolic demands. This helps design training that promotes optimal system adaptation and capacity for the sport.

• M2 Movement Analysis:

  • Cardinal Planes: Analyzes movement in the Frontal (divides body into front/back), Transverse (divides into top/bottom), and Sagittal (divides into left/right) planes.

  • Axes of Rotation & Joint Types: Identifies the axes around which movement occurs (e.g., frontal plane motion around a sagittal axis) and the types of joints involved (e.g., ball & socket, hinge).

  • Major Joints & Joint Actions: Details the specific actions (flexion, extension, rotation, etc.) at key joints.

  • Linkage: Directly links joint actions to specific sport actions, which then guides the appropriate exercise selection for training.

Page 75–81: Movement Planes, Axes, Joints, and Early Anatomy Review

• Page 75: Cardinal planes definitions:

  • Frontal plane: Divides the body into anterior (front) and posterior (back) portions. Movements include abduction and adduction.

  • Transverse plane: Divides the body into superior (upper) and inferior (lower) portions. Movements include rotation.

  • Sagittal plane: Divides the body into left and right halves. Movements include flexion and extension.

• Page 76: Axes correspondences:

  • Frontal plane movements occur around the sagittal axis (runs front to back).

  • Transverse plane movements occur around the vertical axis (runs superior to inferior).

  • Sagittal plane movements occur around the frontal (or coronal) axis (runs side to side).

• Page 77–81: Joint types and major joints:

  • Ball & Socket: Allows for movement in all planes (e.g., hip, shoulder).

  • Hinge: Allows for movement primarily in one plane (e.g., elbow, knee).

  • Condyloid: Allows movement in two planes but no rotation (e.g., wrist joint).

  • Pivot: Allows rotation around an axis (e.g., atlantoaxial joint in the neck, radioulnar joint).

  • Major joints: Hip, knee, shoulder, elbow, ankle, etc.

  • Included anatomy visuals: Labrum, femoral head, acetabulum, scapula, clavicle, humerus, etc., emphasize understanding joint structure for proper range of motion and stability.

Pages 82–89: M3: Muscle Analysis / Muscle Roles, Activations, and Actions

• Page 82: M3 overview – Focuses on Muscle Roles & Types (e.g., agonist, antagonist), Activations (concentric, eccentric, isometric), and detailed analysis of Upper/Lower Body and Trunk musculature.

• Page 83: Muscle Roles in Action: The quadriceps serve as an example:

  • Agonist (Prime Mover): The muscle primarily responsible for generating the desired movement (e.g., quads during knee extension).

  • Antagonist: The muscle that opposes the action of the agonist (e.g., hamstrings opposing quads during knee extension).

  • Synergist: Muscles that assist the agonist or stabilize nearby joints during movement (e.g., glutes assisting quads in a squat).

  • Fixator (Stabilizer): Muscles that immobilize a joint or bone to provide a stable base for the action of other muscles.

  • Discussion of uni-articulate (crossing one joint) and bi-articulate (crossing two joints) function of muscles like quadriceps and hamstrings, illustrating their complex interplay in hip and knee flexion/extension.

• Page 84–85: Activations/Contractions:

  • Concentric: Muscle shortens as it generates force (e.g., lifting phase of a bicep curl).

  • Eccentric: Muscle lengthens under tension as it controls movement (e.g., lowering phase of a bicep curl).

  • Isometric: Muscle generates force without changing length; no visible movement (e.g., holding a plank).

• Important Concept: A muscle that concentrically activates for a given movement (e.g., quadriceps for knee extension) will typically eccentrically activate to control the opposing movement (e.g., quadriceps controlling knee flexion during decent); the roles of agonist, antagonist, and synergist are dynamic and depend on the direction of resistance and the specific movement produced or resisted.

• Page 86–89: Tension/Force in Muscles by Joint Actions:

  • Example table:

  • Hip (Iliofemoral) – Flexion; Hip extensors (e.g., Gluteus Max, hamstrings) act as antagonists. Agonists include Iliopsoas, Rectus Femoris, Sartorius. Contraction type: Eccentric (when controlling extension). Planes: Sagittal/Frontal.

  • Knee (Tibiofemoral) – Flexion; Agonists include hamstrings, gastrocnemius. Antagonists include rectus femoris and vastus group. Contraction type: Eccentric (when controlling knee extension, like lowering in a squat).

  • Similar framing for other joints, detailing agonist muscles, contraction types, and planes of movement.

• Takeaway: A comprehensive understanding of which muscles act as agonists, antagonists, and synergists across various joint actions is fundamental for explaining movement mechanics, identifying potential muscular imbalances, and assessing injury risk. The specific contraction type employed is critical and governed by the direction of movement and external resistance.

Pages 90–99: Shoulder Girdle Muscles and Movements

• Page 90–93: Superficial to deep scapular muscles and their actions:

  • Trapezius: Upper (elevation, upward rotation), Middle (retraction), Lower (depression, upward rotation).

  • Deltoid: Anterior (flexion, internal rotation), Middle (abduction), Posterior (extension, external rotation).

  • Levator scapulae: Elevation.

  • Rhomboids (major/minor): Retraction, downward rotation, elevation.

  • Serratus anterior: Protraction, upward rotation (critical for reaching overhead).

  • Pectoralis minor: Protraction, depression, downward rotation.

  • Actions: Detailed descriptions of Retraction, Elevation, Depression, Upward/Downward Rotation, Protraction of the scapula.

• Page 94–99: Movements and scapulothoracic mechanics: Emphasizes the coordinated movement of the scapula on the rib cage.

  • Upward rotation: Primarily driven by upper/lower trapezius and serratus anterior, crucial for overhead arm movements.

  • Retraction: Rhomboids, middle trapezius.

  • Protraction: Serratus anterior and Pectoralis minor.

  • Downward rotation: Levator scapulae, rhomboids, pectoralis minor.

Page 100–103: Shoulder muscle actions – Movement breakdowns

• Specific muscle contributions to various glenohumeral (GH) movements:

  • Abduction: Deltoids (primarily middle), Supraspinatus (initiates).

  • Flexion: Anterior deltoid, pectoralis major (clavicular head), coracobrachialis.

  • Extension: Latissimus dorsi, Teres major, posterior deltoid.

  • Horizontal adduction/abduction: Pectoralis major (adduction), posterior deltoid (abduction).

  • Internal/External rotation:

  • Internal Rotation: Subscapularis, pectoralis major, latissimus dorsi, teres major, anterior deltoid.

  • External Rotation: Infraspinatus, Teres minor, posterior deltoid.

  • Specific pairing: e.g., posterior deltoid and infraspinatus for external rotation; anterior deltoid and clavicular portion of pectoralis major for flexion.

Pages 104–112: Rotator Cuff and Shoulder Anatomy (RC focus)

• Page 112–116: Anterior/Posterior Views of Rotator Cuff and surrounding muscles:

  • SITS muscles: Supraspinatus (abduction), Infraspinatus (external rotation), Teres Minor (external rotation), Subscapularis (internal rotation). These muscles are crucial for shoulder stability and precise control of movement.

  • External/Internal rotation movements are specifically mapped to their respective RC components.

  • Clavicular vs. sternal portions of pectoralis major contribute to horizontal and diagonal arm movements.

• Page 118–121: Visuals showing muscles of the rotator cuff with corresponding actions (abduction, external rotation, internal rotation, extension, etc.), highlighting their individual roles within the system.

• Page 122–126: Further RC movement mappings (horizontal adduction/abduction, external rotation, internal rotation), reinforcing the precise functions.

• Page 127–129: Additional RC actions and shoulder movements – emphasizing the critical role of scapular stabilization (e.g., by serratus anterior and trapezius) in allowing the rotator cuff to function optimally and prevent impingement.

• Page 130–132: Review of GH (glenohumeral) movements: Extension, Adduction, Horizontal Adduction, External Rotation, Internal Rotation, Flexion, Abduction.

• Overall Takeaway: The rotator cuff and the surrounding shoulder girdle muscles function as a highly coordinated system to stabilize the glenohumeral joint during dynamic movements. While many actions are compartmentalized to specific muscles, they work synergistically to facilitate complex functional tasks and maintain joint integrity.

Pages 133–138: Elbow Muscles and Radioulnar (RU) Plane Movements

• Page 133–135: Elbow muscle actions:

  • Elbow Flexors: Biceps Brachii, Brachialis, Brachioradialis. Biceps Brachii is also a powerful supinator and is bi-articulate (acting at shoulder and elbow). Brachialis is the prime mover for elbow flexion.

  • Elbow Extensors: Triceps Brachii (Long Head, Lateral Head, Medial Head) and Anconeus. The long head of the triceps is bi-articulate (acting at shoulder and elbow).

• Page 136–137: Radioulnar joint movements:

  • Pronation: Turning the palm downward; primarily by Pronator Teres and Pronator Quadratus.

  • Supination: Turning the palm upward; primarily by Supinator and Biceps Brachii.

• Page 138: Review of RU movements:

  • Flexion: Biceps brachii, brachialis, brachioradialis.

  • Extension: Triceps brachii, anconeus.

  • Pronation: Pronator teres/quadratus.

  • Supination: Supinator, biceps brachii.

Pages 139–156: Thigh Muscles – Hip, Knee, and Anterior/Posterior Chain

• Page 140–142: Anterior thigh muscles and hip flexors:

  • Rectus femoris: Part of the quadriceps, also a hip flexor and bi-articulate.

  • Iliopsoas: (Iliacus + Psoas major) – Primary hip flexor.

  • Sartorius: Longest muscle in the body, aids in hip flexion, abduction, and external rotation, and knee flexion.

  • Details on iliopsoas insertion and its significant role in flexion-focused actions.

• Page 143–145: Posterior chain muscles:

  • Gluteus maximus: Primary hip extensor.

  • Hamstrings group: (Semitendinosus, Semimembranosus, Biceps femoris long head) – Hip extensors and knee flexors, bi-articulate.

  • Adductor group: (Adductor magnus, longus, brevis, gracilis, pectineus) – Primarily hip adduction, also involved in hip flexion/extension and internal/external rotation.

  • Gluteus medius/minimus: Key stabilizers and movers for hip abduction.

• Page 145–147: Gluteal muscles and IT band relations:

  • Gluteus medius/minimus: Crucial for hip abduction and stabilizing the pelvis in the frontal plane.

  • Tensor fasciae latae (TFL): Works with the IT band (iliotibial band) for hip flexion, abduction, and internal rotation, also contributes to knee stability.

• Page 147–149: Adductor group: Their actions are often in opposition to the gluteus medius/minimus in hip motion, providing balance and control.

• Page 149–151: External Rotation, Piriformis and deep external rotators:

  • Deep six external rotators: Piriformis, gemellus superior/inferior, obturator internus/externus, quadratus femoris.

  • Piriformis: A key muscle in hip external rotation, with its close proximity to the sciatic nerve sometimes causing piriformis syndrome.

• Page 152–156: Review of hip movement actions: Flexion/Extension; Abduction/Adduction; External/Internal rotation; and associated muscle groups emphasizing their coordinated function.

Pages 157–159: Joints of the Foot & Ankle

• Common joints:

  • Talocrural joint (ankle): Primary joint for dorsiflexion/plantarflexion.

  • Subtalar joint: Primary joint for inversion/eversion.

  • Tarsometatarsal (Lisfranc) joints, Metatarsophalangeal (MTP) joints, Talonavicular joint, Lisfranc complex: Contribute to smaller movements and arch support.

• Movements: Dorsiflexion (toes up towards shin), Plantarflexion (pointing toes down); Inversion (sole turns inward), Eversion (sole turns outward); Flexion/extension at the ankle and foot joints.

• Key muscles listed for ankle actions:

  • Dorsiflexion: Tibialis anterior, extensor digitorum longus, extensor hallucis longus.

  • Plantarflexion: Gastrocnemius, soleus, fibularis (peroneus) longus/brevis, tibialis posterior.

  • Inversion: Tibialis anterior, tibialis posterior.

  • Eversion: Fibularis (peroneus) longus/brevis, extensor digitorum longus.

Page 160–161: The Trunk and Spinal Column – Core Muscles

• Core muscle groups:

  • Superficial movers (global muscles): Latissimus dorsi, Serratus anterior, Rectus abdominis, Pectoralis major, External obliques, Internal obliques. They generate large movements.

  • Deep stabilizers (local muscles): Transversus abdominis, Multifidus, Erector spinae (deep fibers), Quadratus lumborum, Pelvic floor. These provide segmental stability to the spine and pelvis.

• Structural landmarks: Rectus sheath, Linea alba (midline fibrous structure), Inguinal region, Iliac crest, Inguinal ligament.

• Functional grouping: Trunk muscles are functionally grouped into those that support bending (flexion/extension), rotation, lateral flexion, and crucially, provide stabilization, acting as a kinetic link to transfer force effectively between the upper and lower body.

Page 162–176: Trunk Movements, Abdominal/Back Musculature, and Spinal Stability

• Page 162–164: Trunk flexion actions: Primarily performed by the Rectus abdominis, assisted by the External and Internal obliques. Pelvic tilt mechanics (anterior/posterior) are also tied to trunk and hip flexor/extensor activity.

• Page 165–167: Spinal extension: Performed by the Erector spinae group (Iliocostalis, Longissimus, Spinalis) and deep spinal muscles (Multifidus, Rotatores, Semispinalis, Quadratus lumborum). These muscles also contribute to spinal posture.

• Page 168–169: CrossFit (brief mention; context for diverse training modalities that often incorporate high-intensity, multi-joint movements stressing the core).

• Page 173–176: Spinal rotation and stabilization:

  • Spinal rotation contributions: Primarily from the External and Internal obliques, which work synergistically (e.g., external oblique on one side with internal oblique on the opposite).

  • Transverse abdominis and deep spinal muscles: Crucial for intrinsic spinal stability by increasing intra-abdominal pressure and providing segmental control, acting as a natural 'corset.'

• Summary: The trunk and spine comprise a complex system of deep stabilizers and superficial movers. Coordinated control and strength of these muscles are essential not only for athletic performance (force transfer, explosive movements) but also for injury prevention, particularly in the lower back and pelvis.

Notes on Equations, Data, and Visual Cues (LaTeX-ready)

• Energy and work relations (conceptual at times in slides):

  • $V_0 = 0$: Initial velocity is zero for certain lifts (e.g., from a dead start).

  • $N = -W$: Net work relates to resistance encountered.

  • $w = mg$: Weight equals mass times gravitational acceleration.

  • $KE + PE_g$: Kinetic energy and gravitational potential energy interplay dynamically during lifts and stretch-shortening cycle (SSC) movements.

• Velocity/1RM zones (training load guidance):

  • >100% 1RM / <0.3 m/s: Supramaximal loads, extremely low velocity, focus on maximal isometric or eccentric strength.

  • 90%–100% 1RM / 0.3–0.5 m/s: Maximal strength development (heavy loads, low velocity).

  • 80%–90% 1RM / 0.5–0.75 m/s: Strength-speed development (moderate-heavy loads, moderate velocity).

  • 60%–80% 1RM / 0.75–1.0 m/s: Speed-strength development (moderate loads, moderate-high velocity).

  • <60% 1RM / >1.0 m/s: Speed and power development (light loads, high velocity).

• RFD concepts (qualitative): Higher Rate of Force Development (RFD) directly correlates with faster performance across a range of explosive activities, including jumping, weightlifting, cycling, sprinting, and the golf swing.

• RSI thresholds (qualitative):

  • $$<1.5