Explain how progressive overload training leads to improvements in oxygen uptake and the body's ability to deliver oxygen to working muscles during aerobic exercise. (4 marks)
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- Progressive overload training creates increased demand on the cardiovascular and respiratory systems during exercise.
- This stimulus causes adaptations including enhanced stroke volume and improved cardiac output for greater blood circulation.
- The training stress results in increased number and size of mitochondria within muscle cells for enhanced oxygen utilisation.
- Improved capillary density develops around muscle fibres, enabling more efficient oxygen delivery to working tissues.
- These adaptations lead to higher VO2 max values and improved endurance performance during sustained aerobic activities.
- Consequently athletes can maintain higher intensities for longer periods without experiencing excessive fatigue.
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- Progressive overload training creates increased demand on the cardiovascular and respiratory systems during exercise.
- This stimulus causes adaptations including enhanced stroke volume and improved cardiac output for greater blood circulation.
- The training stress results in increased number and size of mitochondria within muscle cells for enhanced oxygen utilisation.
- Improved capillary density develops around muscle fibres, enabling more efficient oxygen delivery to working tissues.
- These adaptations lead to higher VO2 max values and improved endurance performance during sustained aerobic activities.
- Consequently athletes can maintain higher intensities for longer periods without experiencing excessive fatigue.