Training Methods

🧠 Chapter Study Notes: Training Methods

Hello future top athlete! Welcome to the chapter on Training Methods. This is where we learn how to turn the physiological theory about energy systems, cardiovascular adaptations, and muscular fitness into structured, practical training programmes.

In the HKDSE syllabus, four primary training methods are prescribed under the physiological basis for exercise and sports training: Continuous Training, Interval Training, Circuit Training, and Resistance Training. Understanding why and how each method works is essential for answering theory questions and designing training programmes!

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Section 1: Aerobic and Anaerobic Conditioning

1. Continuous Training

Continuous training is the foundation for building aerobic endurance and cardiovascular fitness.

What is it?

• Performing sustained exercise (e.g., running, cycling, swimming, rowing) at a steady submaximal intensity without rest periods, typically lasting for at least 20 to 60 minutes.
• Exercise intensity is kept within the aerobic training zone (generally 60% to 80% of Maximum Heart Rate).

Physiological Adaptations:

• Develops the aerobic energy system by enhancing stroke volume, cardiac output, and capillarisation in skeletal muscles.
• Increases mitochondrial density and oxidative enzyme activity.
• Promotes the utilisation of fat as an energy substrate, sparing muscle glycogen stores.

Example: Running or cycling continuously at a steady pace for 40 minutes at 70% maximum heart rate.

2. Interval Training

Interval training alternates structured periods of high-intensity work with controlled periods of rest or active recovery.

What is it?

• Involves precise manipulation of variables: Work interval (distance or duration and intensity), Rest/Recovery interval (type and duration), number of repetitions and sets, and the work-to-rest ratio.
• Can target either the aerobic system (longer work intervals, lower intensity) or the anaerobic system (shorter, high-intensity bouts).

Physiological Adaptations:

• Enhances the body's tolerance to lactic acid accumulation and accelerates lactate clearance.
• Elevates the anaerobic threshold and improves maximal oxygen uptake (\(\text{VO}_2\text{max}\)).
• Allows athletes to perform a higher total volume of high-intensity work than continuous training would permit.

Example: Sprint interval session: \(6 \times 100\text{ m}\) sprints at 90% maximal effort with a 1:3 work-to-rest ratio (e.g., 15 s work : 45 s recovery).

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Section 2: Multi-Component and Strength Conditioning

3. Circuit Training

Circuit training is a versatile training method where participants complete a series of different exercises arranged at consecutive stations.

What is it?

• A series of \(6\) to \(12\) stations where an individual performs a specific exercise for a set time (e.g., 30 seconds) or a set number of repetitions before moving to the next station with minimal rest.
• Stations alternate between different muscle groups (e.g., upper body, core, lower body, whole-body cardio) to avoid local muscular fatigue.
• Can be designed to target muscular endurance, aerobic/anaerobic fitness, strength, or sport-specific skill components.

Physiological Adaptations:

• Simultaneously improves local muscular endurance and cardio-respiratory endurance depending on the work-to-rest intervals and exercise selection.
• Enhances metabolic efficiency and energy expenditure across multiple muscle groups.

Example: A circuit consisting of push-ups, shuttle runs, bodyweight squats, plank holds, skipping rope, and lunges completed for 3 rounds.

4. Resistance Training

Resistance training involves exercising muscles against external resistance (such as free weights, weight machines, resistance bands, or body weight) to stimulate muscular adaptations.

Types of Muscle Contraction Involved:

• Concentric Contraction (Isotonic): Muscle shortens while generating tension (e.g., upward phase of a bicep curl or squat).
• Eccentric Contraction (Isotonic): Muscle lengthens while under tension (e.g., controlled lowering of a weight).
• Isometric Contraction: Muscle produces tension without changing length or joint angle (e.g., holding a static wall sit or plank).

Programming Variables for Different Goals:

• Muscular Strength: High load (\(80\text{--}100\%\) of 1RM), low repetitions (\(1\text{--}6\) reps), longer rest periods (\(2\text{--}3\) minutes).
• Muscular Hypertrophy (Muscle Size): Moderate to high load (\(67\text{--}85\%\) of 1RM), moderate repetitions (\(6\text{--}12\) reps).
• Muscular Endurance: Low to moderate load (\(<67\%\) of 1RM), high repetitions (\(15\text{--}25+\) reps), short rest periods (\(<30\text{ seconds}\)).

Physiological Adaptations:

• Neural adaptations: Improved motor unit recruitment, firing rate, and synchronisation during early training phases.
• Hypertrophy: Increase in the cross-sectional area of muscle fibres (mainly fast-twitch fibres) due to increased myofibrillar protein synthesis.
• Strengthening of connective tissues (tendons and ligaments) and increased bone mineral density.

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Section 3: Flexibility and Warm-up Considerations

Flexibility training maintains or increases the range of motion around joints and forms an integral part of conditioning and injury prevention.

• Static Stretching: Holding a stretch at the point of mild discomfort for 10 to 30 seconds without movement. Best utilised during the cool-down phase to promote muscle relaxation and long-term joint range of motion.
• Dynamic Stretching: Controlled, movement-based stretching taking joints and muscles through their full active range of motion (e.g., leg swings, walking lunges). Ideal during the warm-up to increase muscle temperature, blood flow, and neuromuscular readiness.

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Chapter Review: The Four Prescribed Training Methods