CAIE IGCSE Biology 9.2.4 Effect of Physical Activity on Questions
Investigate how physical activity changes heart rate by measuring pulse at rest and at defined times during recovery.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- Write a testable hypothesis predicting how physical activity affects heart rate compared with rest.
- Measure pulse consistently at rest and at set times after exercise, counting beats over a timed interval.
- Describe the heart-rate response to exercise and recovery using the recorded results.
CAIE IGCSE Biology 9.2.4 Effect of Physical Activity on Questions question 1
[Maximum number: 2]
A group of students investigated the effect of exercise on their heart rates.
They measured their heart rates:
- before exercise
- immediately after running 1 km
- one minute after running 1 km
Before doing the investigation they wrote a hypothesis.
The students measured their pulse as an indicator of heart rate.
Describe how the students could measure their pulse.
1 fingers on, wrist / neck / artery ;
2 number beats over a period of time / bpm ;
3 use a heart rate monitor / AW ;
4 contact of sensor with skin ;
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