VCE Physical Education Units 3 & 4 Review

Comprehensive vocabulary flashcards covering skill classification, coaching strategies, biomechanical principles, qualitative movement analysis, acute physiological responses, energy systems, fatigue mechanisms, nutrition, and fitness components.

Movement Skills: Developmental Context (Movement Type)

Movement skills categorized by developmental stage:

• Fundamental movement skills (FMS):

  • Stability

  • Locomotor

  • Manipulative

• Sport-specific skills (SS)

Movement Precision Skill Classification

• Fine motor skills: Involve small muscles or muscle groups, requiring precision and delicate control.

• Gross motor skills: Involve large muscle groups, emphasizing power and whole-body movement.

Type of Movement Skill Classification

• Discrete motor skill: Has a distinct, clearly defined beginning and end.

• Serial motor skill: Involves a sequence of discrete motor skills linked together in a specific order.

• Continuous motor skill: Has no distinct beginning or end point and is performed repetitively over an extended period.

Predictability of Environment Skill Classification

• Open motor skills: Performed in an unpredictable, ever-changing environment where the performer must adapt movements to external factors.

• Closed motor skills: Performed in a stable, highly predictable environment where the performer dictates the timing and execution.

Link Between Motor Skill Development, Participation, and Performance

The reciprocal relationship between skill development and sporting involvement:

• FMS Competence: Serves as the building block for social and competitive sport.

• Confidence, self-efficacy, and motivation: Increases as competence develops.

• Increased participation: Leads to greater involvement in school and local sport.

• Increased performance: Creates more opportunities to practice and improve motor skills.

Sociocultural Factors

Key sociocultural influences impacting participation and skill acquisition:

• Family
• Peers
• Community
• Gender
• Socioeconomic status (SES)
• Cultural beliefs and traditions

Stages of Learning

1. Cognitive: Beginner is mentally trying to comprehend the movement requirements.
2. Associative: Performer is beginning to refine their technique and movement patterns.
3. Autonomous: Skill is largely automatic; performer no longer consciously thinks about the skill execution.

Theories of Skill Acquisition (Direct vs Constraints-Based)

• Linear (Direct approach):
  • High repetition
  • Absence of a simulated game environment
  • Coach makes decisions
  • Limits independent thinking and performance
• Non-linear (Constraints-based approach):
  • Learner takes an active role in developing movement solutions
  • Practice mimics the game
  • Learners problem-solve
  • Task simplification

Types of Constraints

• Individual constraints: Body size, fitness, mentality.
• Environmental constraints: Noise, terrain, family.
• Task constraints: Rules, team size, equipment.

Scheduling of Practice Strategies

• Type:
  • Part: Practicing subcomponents of a skill.
  • Whole: Practicing the skill in its entirety.
• Distribution:
  • Massed: Longer training sessions with shorter, less frequent rest intervals.
  • Distributed: Shorter training sessions with longer, more frequent rest intervals.
• Variability:
  • Blocked: Repetitive practice of the same skill without interruption.
  • Random: Varied sequence of different skills practiced within the same session.

Psychological Skills

1. Confidence: Encourages players to try new skills.
2. Motivation: Needed to learn and set goals:
   • Intrinsic: Fun, personal bests (PB), playing well.
   • Extrinsic: Rewards, recognition, medals.
3. Optimal arousal: Readiness level along the inverted-U curve (boredom vs. 'in the zone' vs. over-arousal).
4. Concentration: Focus, which can be disrupted by:
   • External distractors: Spectators, competition.
   • Internal distractors: Fatigue, negative self-talk.

Psychological Strategies

Strategies used to manage arousal, focus, and performance:

• Mental practice and imagery
• Progressive muscle relaxation
• Controlled breathing
• Listening to music
• Mindfulness
• Meditation
• Self-talk and use of cue words
• Goal setting

Types of Feedback

• Intrinsic feedback: Sensory information received directly by the performer (visual, auditory, proprioception, touch).
• Augmented feedback (Extrinsic):
  • Knowledge of results: External information regarding the outcome of the performance.
  • Knowledge of performance: External information regarding the technical execution and movement characteristics.

Force

A push or pull that alters or tends to alter the state of motion of a body.

• Formula: $F = \text{mass} \times \text{acceleration}$
• Forms: Applied, gravitational, frictional.

Torque

The turning effect produced by a force.

• Causes a change in angular motion (movement of a body part around an axis of rotation).

Angular Velocity

The rate of change of the angular displacement of a body over time.

• Rotational movement of limbs results in linear velocity of a ball or implement.

Linear Velocity

The rate of change of an object's position as it moves along a straight path.

• Formula: $\text{Linear Velocity} = \text{radius of rotation} \times \text{angular velocity}$

Inertia

An object's tendency to resist a change in motion.

• Greater mass results in greater inertia.

Momentum

The amount of motion an object has and its resistance to changing that motion.

• Formula: $\text{Momentum} = \text{mass} \times \text{velocity}$

Conservation of Momentum

The total momentum of the system before the collision is equal to the total momentum after the collision.

Summation of Momentum

The sequential and coordinated movement of each body segment from larger to smaller body parts to produce maximum velocity.

Angular Momentum

The amount of angular motion that a body possesses.

• Formula: $\text{Angular Momentum} = \text{angular velocity} \times \text{moment of inertia}$

Moment of Inertia (MOI)

An object's resistance to change its angular motion.

• Formula: $\text{MOI} = \text{mass} \times \text{radius}^2$

Conservation of Angular Momentum

The angular momentum of an object remains constant, unless acted upon by an external force.

• Decreased moment of inertia ($\text{MOI}$) causes faster rotation (e.g., dancers bringing their limbs together).

Impulse

The change in momentum of an object.

• Formula: $\text{Impulse} = \text{force} \times \text{time}$
• Variations:
  • Fast impulse: High force, short time.
  • Slow impulse: Low force, long time.
• Injury prevention: Increase the time over which force is applied to decrease impulse/impact force (e.g., motorbike landing).

Newton's First Law of Linear Motion (Law of Inertia)

A body will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

Newton's Second Law of Linear Motion (Law of Acceleration)

A force applied to an object will produce a change in motion in the direction of the applied force that is directly proportional to the size of the force ($F = \text{mass} \times \text{acceleration}$).

Newton's Third Law of Linear Motion (Law of Action-Reaction)

For every action there is an equal and opposite reaction.

Mechanical Advantage

• $\text{MA} < 1$: Increased range of motion, increased angular velocity (promoted by increasing lever length).
• $\text{MA} > 1$: Less effort required to move a resistance.

Equilibrium

A state of motion, rest, or constant velocity, where all forces and torques are balanced.

Projectile Motion

• Angle of release:
  • Pure vertical (height)
  • Horizontal (power)
  • Oblique (distance)
  • Target lower than release height: $< 45^\circ$
  • Target same height as release: $45^\circ$
  • Target higher than release height: $> 45^\circ$
• Speed of release
• Height of release

Stability

The body's ability to resist a change in its current state.

• Factors affecting stability:
  • Increase base of support (area bounded by limbs touching the ground)
  • Lower centre of gravity (belly button)
  • Centre line of gravity (direction gravity is acting relative to the base of support)

Third-class Levers

A lever where the force (effort) is applied between the resistance and the axis of rotation.

Qualitative Movement Analysis (QMA): Goal and Purpose

• Goal: To identify strengths and weaknesses at the physiological, technical, tactical, and psychological levels.
• Purpose:
  • Analysing movement skills
  • Modifying movement
  • Error correction and improvement
  • Injury prevention

Preparation Stage (QMA)

The observer formulates a plan outlining what must be done to offer the best advice to a performer when making technical improvements.

• Considerations:
  • What stage of learning and skill level is the performer at?
  • What are the critical features of the movement/skill?
  • Where is the skill being performed and viewed?
  • Which observation method will be used?

Observation Stage (QMA)

The execution of the observation method decided in the preparation stage.

• Methods:
  • Direct observation and note-taking
  • Digital recordings
  • Continuous high-speed photography
  • Motion capture
• Viewing considerations:
  • Reliability: Repetition of the skill
  • Position: Clear view
  • Plane: Side-on

Evaluation Stage (QMA)

Looking at similarities and differences between the performer's execution of a movement/skill and that of an elite player.

• Can be objective (rubric, checklist) or subjective (opinions, interpretations).
• Next steps:
  • Decide strengths
  • Decide weaknesses
  • Determine cause of the problem (technique or strength?)
  • Determine how the problem can be addressed

Error Correction Stage (QMA)

Brings the analysis together with an intervention, including feedback and practice strategies targeted to the participant's stage of learning to achieve improvement.

• Environment: Practiced in a closed environment with high predictability and low levels of variability.
• Considerations:
  • How biomechanical principles are referred to when making improvements
  • How skills are best improved (distributed practice)
  • What feedback should be used (regular feedback throughout, minimum of $2\,\text{weeks}$, progress recorded, with only one focus at a time)

Acute Respiratory Responses to Exercise

• Increased respiratory rate: "Number of breaths per minute"
• Increased tidal volume: "Amount of air inspired and expired per breath"
• Increased ventilation: "How much air inspired and expired per minute"
• Increased gaseous exchange: "The process of diffusing oxygen into the bloodstream and carbon dioxide out of the bloodstream"

Acute Cardiovascular Responses to Exercise

• Increased heart rate: "Number of beats per minute"
• Increased stroke volume: "How much blood is ejected from the left ventricle per beat"
• Increased cardiac output: "How much blood is ejected from the left ventricle per minute"
• Increased blood pressure: "The force of blood against arterial walls"
• Increased arteriovenous oxygen diff ($a\text{-}vO_2$): "The difference in concentration between the arterioles and venules"
• Redistribution of blood flow: "The vascular shunt mechanism vasodilates and vasoconstricts blood vessels to allow more blood to flow to intended areas"
• Increased venous return: "Rate of blood flow back to the heart"
• Decreased plasma volume: "In body's attempt to thermoregulate, plasma, the liquid component of blood, decreases which can lead to increased viscosity of the blood (thicker, harder to pump)"

Acute Muscular Responses to Exercise

• Increased motor unit recruitment: "The activation of muscle fibres by motor neurons"
• Decreased fuel stores: "Muscles use food and chemical fuels to produce energy"
• Increased muscle temperature: "Heat is a by-product of ATP resynthesis"
• Increased blood flow to working muscles: "Blood is directed away from non-essential organs via vasoconstriction to working muscles via vasodilation"
• Increased $a\text{-}vO_2$ diff: "The difference in concentration between the arterioles and venules"
• Increased enzyme activity: "Enzymes are structures that help to speed up chemical reactions involved in ATP production and waste removal"

Oxygen Kinetics: Deficit, Steady State, and EPOC

• $O_2$ deficit: $O_2\text{ demand} > O_2\text{ supply}$
• Steady state: $O_2\text{ demand} = O_2\text{ supply}$
• EPOC (Excess post-exercise oxygen consumption): $O_2\text{ supply} > O_2\text{ demand}$ (to oxidise and remove metabolic by-products; energy and ATP demand drop; passive or active recovery)

Energy Rate and Energy Yield

• Rate: How quickly energy can be provided to resynthesise ADP to ATP.
• Yield: The amount of energy required for the task / total amount produced.

ATP-CP Energy System

• Rate: Highest
• Yield: Lowest
• Duration: $6\text{--}10\,\text{s}$
• Fuel: Creatine Phosphate (CP)
• Advantages (+ve): Immediate supply of ATP
• Disadvantages (-ve): Limited CP stores in muscles
• Performance: Maximal-intensity, short-duration
• Recovery: Passive ($70\%$ of CP restored in $30\,\text{s}$, $98\%$ in $3\,\text{min}$)

Anaerobic Glycolysis Energy System

• Rate: High
• Yield: Low (due to by-products)
• Duration: $10\text{--}75\,\text{s}$
• Fuel: Glycogen (more bonds than CP)
• Advantages (+ve): Quick resynthesis of ATP
• Disadvantages (-ve): Metabolic by-products accumulation of $H^+$ and lactate which cause muscles to become acidic (inhibits enzymes responsible for breaking down glycogen)
• Performance: High-intensity, mid-duration (e.g., $400\,\text{m}$)
• Recovery: Active (maintains blood flow to muscles to remove by-products, helps thermoregulate, and prevents venous pooling)

Aerobic Energy System

• Rate: Slowest
• Yield: Largest
• Fuel: Glycogen, triglycerides, amino acids
• Duration: $75\,\text{s}\text{ to }4\,\text{hours}$ ($75\,\text{s}\text{--}90\,\text{min}$ CHO, $90\,\text{min}\text{--}4\,\text{h}$ Fats)
• Advantages (+ve): Resynthesises large amounts of ATP, non-fatiguing by-products ($CO_2$, heat, $H_2O$)
• Disadvantages (-ve): Resynthesises ATP slowly, requires decreased intensity
• Performance: Long duration, submaximal-intensity
• Recovery: Active

Muscular Fatigue: Fuel Depletion

• ATP depletion
• CP depletion: Leads to increased reliance on glycogen/carbohydrates, causing intensity to decrease.
• Glycogen depletion ($90\,\text{min}\text{--}2\,\text{h}$): Leads to increased use of fats, requiring slower breakdown and causing intensity to decrease.

Muscular Fatigue: Accumulation of Metabolic By-products

• Lactate and $H^+$ ions: Produced from the breakdown of glycogen without sufficient oxygen.
• Acidity: Build-up of $H^+$ lowers muscle pH, making muscles acidic and inhibiting glycolytic enzymes.
• Consequences: Slower contraction, lower force production, and less power output.
• Lactate Inflection Point (LIP): The final exercise intensity that can be sustained where lactate production equals lactate removal.

Muscular Fatigue: Thermoregulation

• Heat balance: Muscle contractions produce heat; to maintain homeostatic body temperature, heat loss must match heat produced. If heat loss cannot keep up, thermoregulatory fatigue occurs.
• Blood flow diversion: Blood carries heat from skeletal muscles to the skin to lose heat via sweating.
• Consequences: Less blood and $O_2$ reach working muscles, resulting in decreased ATP resynthesis and a forced drop in exercise intensity.

Nutrition, Hydration, and Recovery Strategies

• Carbohydrate loading: Ingesting more CHO than normal $24\text{--}48\,\text{h}$ beforehand to maximise muscle and liver glycogen stores.
• During exercise: Consuming CHO (gels, lollies, sports drinks) to delay muscular fatigue by replenishing fuels.
• Hydration: Commencing exercise hydrated to promote blood flow and delay thermoregulatory strain.
• Recovery:
  • CHO: Refuel lost glycogen stores ($30\,\text{min}\text{ to }1\,\text{h}$ post-exercise).
  • Water: Replace sweat losses and restore blood plasma volume to optimise blood flow.
  • Protein: Repair muscle tissue and aid long-term adaptations.
• Co-ingestion:
  • CHO gels + water during exercise.
  • Protein + CHO snacks post-exercise.

Aerobic Power

The rate of energy production from the aerobic energy system (e.g., endurance events).

• Factors affecting:
  • Cardiovascular and respiratory system characteristics
  • Muscle fibre type: Slow-twitch (Type I) fibres are more efficient at aerobic ATP production
  • Age: Declines with age
  • Sex: Males have higher haemoglobin concentrations; females have smaller heart sizes

Anaerobic Capacity

The total amount of energy obtainable from the anaerobic energy systems (e.g., $100\,\text{m}\text{--}800\,\text{m}$ sprint).

• Factors affecting:
  • Muscle fibre type: Fast-twitch (Type 2)
  • Age: Muscle mass declines with age
  • Sex: Males have greater muscle mass

Muscular Strength

The ability of the muscle to develop maximal force in a single effort.

• Factors affecting:
  • Muscle size, fibre, and arrangement: Greater cross-sectional area yields greater strength; Type 2 fibres have greater area and higher force production; pennate fibre arrangement increases strength
  • Age: Muscle mass declines with age
  • Sex: Males have higher testosterone levels, promoting muscle growth

Muscular Power

The ability of a muscle or group of muscles to exert a maximum amount of force in the shortest period of time (e.g., high jump).

• Factors affecting:
  • Muscle fibre type: Fast-twitch (Type 2)
  • Velocity of movement: At very high speeds, there is minimal time to produce force
  • Age and sex: Influenced by the same factors as muscular strength

Muscular Endurance

The ability of a muscle or group of muscles to sustain repeated contractions against a resistance for an extended period (e.g., endurance events).

• Factors affecting:
  • Muscle fibre type: Slow-twitch (Type I)
  • Age: Peaks between ages $18\text{--}24$, then declines
  • Sex: Males can supply more $O_2$ to working muscles

Flexibility

The ability to move the muscles and joints through their full range of motion.

• Factors affecting:
  • Joint type and structure
  • Soft tissue structures
  • Body and muscle temperature: Higher temperature increases tissue elasticity
  • Age: Peaks in the mid-$20\text{s}$, then declines

Balance

The ability to control equilibrium while stationary or moving (e.g., gymnastics, dancing).

• Factors affecting:
  • Changes in location, environment, or position of body parts
  • Age: Decreases with age due to cognitive decline and decreased muscle mass

Coordination

The ability to execute motor skills with efficiency, control, and accuracy.

• Factors affecting:
  • Practice

Agility

The ability to change body position quickly and accurately in response to a stimulus, while moving at speed.

• Factors affecting:
  • Cognitive factors (visual processing, timing, reaction time, perception, anticipation)

Speed

The ability to move your body from one point to another or perform a movement quickly (e.g., racing sports like sprinting and swimming).

• Factors affecting:
  • Anaerobic energy system efficiency
  • Rapid availability of ATP
  • Muscle fibre type: Fast-twitch (Type 2)
  • Age: Declines with age
  • Sex: Males generally possess greater speed