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HMS, BM EQ-Bank 412

A Year 11 student is investigating the effects of a 6-week aerobic training program on lactic acid threshold in recreational runners.

Explain how the student could enhance the reliability of their data collection.   (4 marks)

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Sample Answer 

  • Standardise testing protocols by conducting all threshold tests at the same time of day to minimise variation from circadian rhythms that affect physiological responses.
  • Ensure consistent testing conditions including temperature, humidity and surface type for all pre and post-training assessments.
  • Use the same calibrated equipment throughout the entire investigation to eliminate measurement discrepancies from different devices.
  • Provide clear, detailed instructions to participants regarding pre-test preparations (such as sleep, nutrition, and prior exercise) to control extraneous variables that could impact results.
Show Worked Solution

Sample Answer 

  • Standardise testing protocols by conducting all threshold tests at the same time of day to minimise variation from circadian rhythms that affect physiological responses.
  • Ensure consistent testing conditions including temperature, humidity and surface type for all pre and post-training assessments.
  • Use the same calibrated equipment throughout the entire investigation to eliminate measurement discrepancies from different devices.
  • Provide clear, detailed instructions to participants regarding pre-test preparations (such as sleep, nutrition, and prior exercise) to control extraneous variables that could impact results.