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Accuracy of Jump-Mat Systems for Measuring Jump Height
International Journal of Sports Physiology and Performance
|December 15, 2016
Summary
Two jump-mat systems accurately measure vertical jump height, showing minimal error comparable to motion capture. Foot length influences jump height measurements, but jump mats offer reliable tracking for athletes.
Area of Science:
- Biomechanics
- Sports Science
- Human Movement Analysis
Background:
- Vertical jump tests are standard for assessing lower-limb power in athletes and non-athletes.
- Various equipment options exist for measuring jump performance.
Purpose of the Study:
- Compare measurement error between two jump-mat systems (Chronojump-Boscosystem, Globus Ergo Tester) and a criterion motion-capture system.
- Investigate the influence of foot length on jump height measurements.
Main Methods:
- Thirty-one young men performed countermovement and squat jumps.
- A novel mixed model estimated technical error of measurement and subject variability for each device.
- Standardization and magnitude-based inference were used for evaluation.
Main Results:
- Jump-mat systems yielded highly similar jump height measures (≤1 mm difference).
- Motion capture recorded higher jump heights (13.6 cm), a difference explained by foot length adjustment.
- Subject variability and technical error for motion capture and jump mats were small and comparable.
Conclusions:
- Jump-mat systems provide reliable and trustworthy measurements for monitoring vertical jump height changes.
- Foot length is a key factor in explaining discrepancies between motion capture and jump-mat height measurements.
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