Training methods and adaptations: WACE Physical Education Studies Unit 3
“Describe the major training methods and explain the chronic physiological adaptations they produce in the body”
Training methods include continuous, interval, fartlek, resistance, flexibility and circuit training, each developing particular components. Over weeks they cause chronic adaptations: aerobic training enlarges the heart, increases stroke volume and capillaries and mitochondria, while resistance training increases muscle size and strength. WACE wants the method matched to the goal and the resulting adaptation explained.
What this dot point is asking
WACE expects you to describe the main training methods, state what each develops, and explain the long term physiological adaptations. Linking a method to its adaptations via specificity is the core skill.
The major training methods
Continuous training is sustained, steady effort at a moderate intensity for a long time, developing aerobic capacity. It suits distance runners and cyclists.
Interval training alternates periods of work with periods of rest or lower intensity. Short, intense intervals with long rests develop the anaerobic systems and speed, while longer intervals with shorter rests develop aerobic capacity.
Fartlek (speed play) varies the intensity continuously throughout a session, mixing fast and slow efforts, developing both aerobic and anaerobic systems and mimicking the changing demands of team sports.
Resistance (weight) training uses loads to develop muscular strength, power or muscular endurance, depending on the load and repetitions used. Heavy loads and low repetitions build strength; lighter loads and high repetitions build muscular endurance.
Flexibility training, including static and PNF stretching, develops the range of movement at joints.
Circuit training moves through a series of stations and can be designed for strength, endurance or a mix, depending on the exercises chosen.
Each method develops specific qualities, so the choice of method is an application of the specificity principle. Continuous training builds aerobic capacity, heavy resistance builds strength, short intervals build anaerobic power. Selecting the method whose adaptations match the demands of the sport is the reasoning examiners reward; a generic method choice without justification loses marks.
Chronic cardiovascular adaptations
Aerobic training produces lasting adaptations to the heart and circulation. The heart muscle, especially the left ventricle, enlarges and strengthens (cardiac hypertrophy), increasing stroke volume so more blood is pumped per beat. This lowers resting heart rate (bradycardia) because fewer beats are needed for the same output. Blood volume and the number of red blood cells rise, improving oxygen carriage, and the capillary network around the muscles increases, improving oxygen delivery and waste removal.
Chronic respiratory adaptations
Aerobic training strengthens the respiratory muscles and increases the efficiency of gas exchange, raising the amount of oxygen that can be taken up and used, which contributes to a higher VO2 max.
Chronic muscular adaptations
Aerobic training increases the number and size of mitochondria and raises myoglobin content, improving the muscle's ability to use oxygen and oxidise fat, which delays fatigue. Resistance training increases the size of muscle fibres (hypertrophy), raises stored ATP and phosphocreatine and the enzymes of the anaerobic systems, and improves the recruitment of motor units, producing greater strength and power.
Explaining a chronic adaptation
A marker wants the method linked to the adaptation. Model answer: The swimmer has performed sustained aerobic training over the season, which causes the heart, particularly the left ventricle, to enlarge and strengthen. This increases the stroke volume, the amount of blood pumped per beat. Because each beat now ejects more blood, the heart needs fewer beats to maintain the same cardiac output at rest, so the resting heart rate falls. The lower resting heart rate is therefore a sign of the cardiac hypertrophy and increased stroke volume produced by aerobic training.
How this maps to the exam
Questions ask you to select a method for a goal, or to explain the adaptations a method produces. Name the method, state what it develops, then explain the relevant cardiovascular, respiratory or muscular adaptation and how it improves performance. Use specificity to justify the method choice.
Students sometimes list adaptations such as increased stroke volume and muscle hypertrophy together without linking each to the training that produces it. Aerobic training drives the cardiovascular and mitochondrial changes; resistance training drives the muscle size and strength changes. Attach each adaptation to the specific method that causes it, so the cause and effect is clear.
Exam-style questions
Questions in the style of SCSA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
WACE 2022-style6 marksCompare continuous training and high-intensity interval training, explaining the chronic physiological adaptations each produces and the type of athlete each best suits.Show worked answer →
A 6 mark compare answer needs both methods, their adaptations, and the athletes they suit.
- Continuous training
- Sustained submaximal aerobic work (such as long-distance running). Adaptations include increased stroke volume and cardiac output, increased capillary density and mitochondria, raised VO2 max and improved fat use. Best suits endurance athletes (marathoners, distance cyclists).
- High-intensity interval training (HIIT)
- Repeated short, intense efforts with recovery periods. Adaptations include improved anaerobic capacity, tolerance of and ability to buffer hydrogen ions (lactate tolerance), and improvements in both anaerobic and aerobic systems. Best suits games players and middle-distance athletes who need repeated high-intensity efforts.
- Comparison
- Continuous training mainly develops the aerobic system for sustained endurance; HIIT develops anaerobic capacity and repeated-effort tolerance while also improving aerobic fitness.
Markers reward the aerobic adaptations of continuous training, the anaerobic/repeated-effort adaptations of HIIT, and a correct athlete for each.
WACE 2024-style4 marksExplain two chronic physiological adaptations to resistance (weight) training and how each improves power performance.Show worked answer →
A 4 mark answer needs two adaptations each linked to improved power.
- Muscle hypertrophy
- Resistance training increases the cross-sectional area of muscle fibres (especially fast twitch), so the muscle can produce greater force, which contributes to greater power.
- Improved neural recruitment
- Training improves the recruitment, firing rate and synchronisation of motor units, so more fibres are activated more forcefully and quickly, increasing the rate of force development and therefore power.
- Link to power
- Power is force times velocity, so greater force from hypertrophy and faster, fuller recruitment both raise power output in explosive actions.
Markers reward two valid adaptations (such as hypertrophy and neural recruitment) each correctly linked to increased force/power.