Evaluating Fitness Tests

This lesson covers how to evaluate the quality and usefulness of fitness tests, as required by the Edexcel GCSE PE specification (1PE0). You must understand the concepts of validity, reliability, practicality and the use of normative data when assessing whether a fitness test is fit for purpose.

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Why Evaluate Fitness Tests?

Not all fitness tests are equally useful. Before relying on the results of a test, a coach or performer should consider whether the test actually measures what it claims to, whether the results can be trusted, and whether the test is practical to carry out.

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The Four Evaluation Criteria

1. Validity

Definition: The degree to which a test measures what it claims to measure.

A valid test accurately reflects the component of fitness being assessed.

Example	Validity Assessment
The Cooper 12-min run measures cardiovascular endurance	High validity — running for 12 minutes directly tests the heart and lungs' ability to supply oxygen
Using a grip dynamometer to measure overall body strength	Low validity — grip strength only measures hand/forearm strength, not whole-body strength
The sit and reach test measures hamstring and lower-back flexibility	Moderate validity — it only measures flexibility at one joint area, not overall flexibility

Exam Tip: If a test only measures one aspect of a broad component, its validity for that overall component is reduced. For example, the sit and reach test is valid for hamstring flexibility but not valid for shoulder flexibility.

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2. Reliability

Definition: The degree to which a test produces consistent, repeatable results under the same conditions.

A reliable test gives similar results when repeated by the same person under the same conditions.

Factors that affect reliability:

Factor	How It Affects Reliability
Standardised procedures	If the test is carried out the same way every time (same equipment, same instructions), reliability is higher
Environmental conditions	Temperature, wind, surface and time of day should be consistent
Calibrated equipment	Equipment must be checked and standardised (e.g. dynamometer calibrated to zero)
Human error	If a partner operates the stopwatch, reaction time in starting/stopping can vary
Performer's state	Fatigue, motivation, illness, time since last meal — all affect results

Example: If a performer completes the bleep test on Monday and scores Level 9.4, then repeats it on Tuesday under the same conditions and scores Level 9.3, the test has high reliability (the results are consistent). If the score dropped to Level 6.2, the test (or conditions) would be unreliable.

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3. Practicality

Definition: How easy, affordable and feasible a test is to carry out.

Factor	Questions to Ask
Cost	Is the equipment expensive? Can a school afford it?
Equipment	Is specialist equipment needed? Is it readily available?
Time	How long does the test take? Can it be completed in a single lesson?
Space	Is a large area needed? Is it available?
Expertise	Does the tester need specialist training to administer the test?
Number of participants	Can only one person be tested at a time, or can groups be tested?