| Date | November 2021 | Marks available | 1 | Reference code | 21N.1.SL.tz0.8 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 8 | Adapted from | N/A |
Question
What changes occur to a boxer’s stroke volume and heart rate while punching during a bout?
Markscheme
A
Examiners report
This question had a good difficulty level but a poor level of discrimination. This is a complex area (blood pressure during exercise) in our course when you factor in variations that occur due to static and dynamic exercise.
Syllabus sections
Topic 2: Exercise physiology » 2.2. Structure and function of the cardiovascular system » 2.2.7. Analyse cardiac output, stroke volume and heart rate data for different populations at rest and during exercise.
- 22M.1.SL.tz0.8: Which describes the cardiac output of an athlete recovering from strenuous exercise?
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18N.2.SL.tz0.2e:
Distinguish how cardiac output, stroke volume and resting heart rate would differ between trained and untrained women during exercise.
- 18N.2.HL:.tz0.9b: Distinguish how cardiac output, stroke volume and resting heart rate would differ between...
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19M.2.HL:.tz0.7:
The heart rate data is from a study of younger swimmers (aged 14–16 years) and older swimmers (aged 35–40 years) during a 1500 m swim.
Explain the lower increase of heart rate in older swimmers.
