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IB Biology HL B3.2.4 Pulse Rate Measurement Questions

Explore how radial or carotid pulse counts provide a reproducible measure of heart rate during exercise in IB Biology HL B3.2.4.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Outline how to measure heart rate during exercise by taking the pulse and counting beats per minute.

IB Biology HL B3.2.4 Pulse Rate Measurement Questions question 1

[Maximum number: 2]

The graph shows the relationship between the maximum heart rate during exercise and a person's age.

Scatter plot of maximum exercise heart rate, 120–220 bpm, against age, approximately 10–90 years. Open circles denote men and filled circles women, with separate labelled fitted lines.

Outline one method that the researchers could have used to measure heart rate in this study.

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