For example, if a strength and conditioning coach monitors strength and finds a 5kg increase in back squat 1RM, then: For example, if you step on a set of scales twice, only a few seconds apart, the readings will be different due to equipment measurement error, not weight change.Įrror decreases the precision of a test and increases the smallest detectable change, making research and applied sport science less sensitive. Technical error: due to the device used or the setup/environment.For example, slightly modifying the way they use the skinfold callipers to measure body fat, resulting in biased readings. The tester: change of technique or of judgment.For example, the stress of upcoming exams may decrease motivation and strength. The participant: physiological and/or mental factors.Scoring (X), for example, vertical jump height, is comprised of the true score (T) and the error (e), and it can be expressed in the following equation :Įrror is thought to originate in three main sources : In Sports Science, testing is a central tool to support decisions made by practitioners and researchers alike.
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