A student repeatedly squeezes a hand-grip force meter as hard as possible for 60 seconds. The student then rests for 5 minutes and squeezes the meter once more.
| Measurement | Maximum force in N |
|---|---|
| Start | 320 |
| After 20 seconds | 295 |
| After 40 seconds | 250 |
| After 60 seconds | 205 |
| After 5 minutes of rest | 300 |
Describe the change in maximum force during the 60 seconds of squeezing and after the rest.
Explain the changes in maximum force shown in the table.
92 exam-style questions on AQA GCSE Biology 4.2 Respiration, covering 4.2.1 Aerobic and anaerobic respiration, 4.2.2 Response to exercise, and 4.2.3 Metabolism. Each one has a worked solution and a mark scheme showing where the marks go.