6 exam-style questions with full mark schemes and model answers. Write your own answer and the AI examiner marks it against the mark scheme.
Learn this properly: Aerobic and Anaerobic Energy SystemsPriya is a club hockey player. During a match she jogs steadily to keep her position for long periods, but she also makes repeated short, flat-out sprints to chase loose balls and break into the attacking circle.
Discuss how Priya uses both the aerobic and anaerobic energy systems during the match. In your answer, refer to the intensity and duration of each type of effort, the by-products produced, and the idea of the energy continuum. (6 marks)
Daniel is 15 years old and wants to train aerobically to improve his cardiovascular fitness. At GCSE, the aerobic training zone is taken as 60–80% of a performer's maximum heart rate.
(a) Calculate Daniel's maximum heart rate (MHR) using MHR=220−age. (1 mark)
(b) Calculate the lower and upper heart rates (in beats per minute) that mark the boundaries of Daniel's aerobic training zone. Show your working. (3 marks)
Sofia has just finished a 400 m race, run at near-maximum effort for about 55 seconds. Several minutes after crossing the line she is bent over, still breathing very heavily.
(a) Name the term that describes the extra oxygen the body needs after exercise to recover and return to its resting state. (1 mark)
(b) Explain why Sofia's breathing rate stays elevated for several minutes after the race has finished. (2 marks)
After a hard training session, a rugby player uses a cool down as a recovery method.
(a) Describe what a cool down typically involves. (1 mark)
(b) Explain two ways in which a cool down helps the body to recover after exercise. (2 marks)
A performer takes part in a 6-week programme of regular aerobic training.
State two long-term effects of this aerobic training on the cardiovascular system. (2 marks)
State the by-product that builds up in the muscles during anaerobic exercise and causes fatigue. (1 mark)