Physical Fitness

Physical Fitness Overview

  • Presenter: Dr. Dan Warnock D.C.

Key Topics Covered

  • Training principles

  • Warming up/stretching

  • Aerobic/Cardiovascular Training

  • Anaerobic Training

  • Muscular Training (Endurance, Strength, and Power)

  • Weight Training for the Back

  • Developing a fitness plan/schedule

Training Principles

Overload Principle

  • Stress energy systems beyond normal activity levels in three ways:

    • Intensity

    • Duration

    • Frequency

Progression Principle

  • Increase energy system demands progressively as muscles adapt to training.

Specificity Principle

  • Overload and progression should target specific energy systems and muscle groups.

Reversibility Principle

  • Continuous application of overload, progression, and specificity is necessary (use it or lose it).

Weight Training Considerations

  • Overload should cause microscopic muscle damage (catabolism) for tissue regrowth (anabolism).

  • Allow time for adaptation; work specific muscle groups on alternate days.

Warming Up/Stretching

  • Importance of proper warm-up before strenuous activity; avoid hard stretching before warming up.

  • Warm-up options:

    • 10-15 minutes cycling or treadmill

    • Light weight lifts with high reps

    • Active Range of Motion (ROM) exercises.

Aerobic/Cardiovascular Fitness

Aerobic Fitness Types

  1. Aerobic Power: High percentage of maximal oxygen usage, primary energy from muscle glycogen (e.g., 5-10 km races).

  2. Aerobic Endurance: Sustained oxygen use at lower rates for extended periods; energy sources include muscle glycogen, liver glycogen, muscle triglycerides, and plasma fatty acids.

Benefits

  • Increases capacity to handle physical loads and reduces fatigue injuries.

  • Various enjoyable aerobic exercises prevent monotony.

Recommendations

  • Exercise 3-5 times per week, maintaining a heart rate of 60-85% of maximum for 20-60 minutes.

Target Heart Rates

  • Maximum Heart Rate: 220 - age.

  • Target Heart Rate (60-85% of max):

    • Age 20: 120 to 170 bpm

    • Age 30: 114 to 162 bpm

    • Age 40: 108 to 153 bpm

    • Age 50: 102 to 145 bpm

    • Age 60: 96 to 136 bpm

    • Age 70: 90 to 128 bpm

Recovery Heart Rate

  • Recovery rate indicates aerobic fitness:

    • Less than 2 = Poor

    • 2 to 2.9 = Fair

    • 3 to 3.9 = Good

    • 4 to 5.9 = Excellent

    • Above 6 = Outstanding

  • Recovery heart rate calculation: (exercise heart rate - recovery heart rate after 1 minute) / 10.

Setting Fitness Goals

  • Assess current aerobic fitness level.

  • Set long-term goals (body composition, distance, time).

  • Establish short-term goals and document them.

Examples of Aerobic Activities

  • Jogging/running, biking, swimming, spinning, rowing, and other activities raising heart rate to submaximal levels for 20-30 minutes.

Anaerobic Fitness

Definition

  • Ability to sustain high muscle force development for 1-2 minutes, utilizing muscle glycogen.

Types of Anaerobic Exercise

  • Isotonics: Full range of motion against resistance.

  • Isometrics: Muscle contraction without joint motion.

  • Calisthenics: Body weight exercises enhancing strength and flexibility.

Recommendations

  • Engage in anaerobic exercises for at least 10-20 minutes, 2-3 times a week, alongside aerobic training.

  • Start with lower weights and focus on breathing.

Types of Anaerobic Training

  • Isotonic: Full motion against resistance; includes free weights and machines.

  • Isometric: Constancy of muscle fiber length; enhances overall strength.

  • Calisthenics: Body-weight resistance exercises like push-ups and squats.

Muscular Training

Isotonic Endurance Training

  • Muscle endurance defined as continuous contraction ability.

  • Goals include cognitive to motor skill transitions and recruitment changes.

Strength Training

  • Designed to improve kinetic chain efficiency:

    • Muscular Hypertrophy: 6-15 reps for increasing muscle size.

    • Max. Rep Strength: 1-5 reps enhancing functional capacity.

Power Training

  • Focused on explosive speed with lower repetitions, suitable primarily for athletes.

Designing a Training Program

Considerations

  • Align program with individual goals (e.g., enhancing specific weaknesses).

  • Periodization may include alternating weeks between endurance and strength training.

  • Start with larger muscle groups.

  • Incorporate a mix of free weights and machines.

  • Include aerobic elements.

Training Methods

Circuit Training

  • Work major muscle groups with multiple sets on alternate days.

Split Training

  • Beach muscle groups per day (Chest, Back, Legs, etc.).

  • Include aerobic exercise pre- or post-strength training.

Progressive Overload

  • 3-4 sets of exercises at increasing intensity (e.g., pyramid strategy).

Weight Training for Back Stability

Importance of Core Stability

  • Core exercises enhance local muscle systems; weight training complements global muscle systems.

Progression in Weight Training

  • Begin with slower movements, progress to explosive once stability is established.

Key Exercises

  • Focus on alignment and hip hinge techniques before weightlifting.

  • Include various rowing, lat pull-down, back extensions, and stabilization exercises.

Weight Training Exercises

  • Comprehensive muscle training techniques covering:

    • Legs: Machines, squats, lunges.

    • Forearm/Grip: Using various grips and resistance tools.

    • Arms: Bicep and tricep exercises with diverse equipment.

    • Chest and Shoulders: Utilize machines and free weights; maintain caution with overloading.

Innovations in Training

  • Increase difficulty by using unstable surfaces for various exercises to foster variety and avoid routine burnout.