| Date | May 2017 | Marks available | 2 | Reference code | 17M.3.SL.tz0.11 |
| Level | Standard Level | Paper | Paper 3 | Time zone | time zone 0 |
| Command term | Discuss | Question number | 11 | Adapted from | N/A |
Question
An athlete in training finds they are losing weight. Discuss this in relation to the concept of energy balance.
Markscheme
energy intake < energy expenditure = weight loss✔
athletes in training require a higher energy intake✔
a reduction in energy intake will lead to a reduction in metabolic rate and hence energy expenditure✔
energy expenditure is a combination of basal metabolic rate ‹BMR› and physical activity ‹to lose weight energy expenditure must be greater than energy intake›✔
Examiners report
Many did not elaborate on the basic weight loss equation and only received one mark.
