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Validation of the iPhone app using the force platform to estimate vertical jump height
Jorge Carlos-Vivas1,2, Juan P Martin-Martinez3, Miguel A Hernandez-Mocholi3
1Faculty of Sport Sciences, University of Extremadura, Caceres, Spain - jorge.carlosvivas@gmail.com.
The Journal of Sports Medicine and Physical Fitness
|September 23, 2016
Summary
The My Jump iPhone app accurately measures vertical jump height, correlating perfectly with force platform data. While slightly overestimating height, it serves as a valid tool for assessing jump performance.
Area of Science:
- Sports Science
- Biomechanics
- Human Movement Analysis
Background:
- Vertical jump performance is a key metric in sports science.
- Various devices exist for measurement, but force platforms are the gold standard.
- Accurate and accessible tools for jump height assessment are needed.
Purpose of the Study:
- To validate the My Jump iPhone application for measuring vertical jump height.
- To compare the app's measurements against force platform data.
- To assess the reliability of the My Jump app using vertical velocity and time in air.
Main Methods:
- 40 sport science students performed five countermovement jumps (CMJs) each over a force platform.
- Vertical jump height was calculated using force platform data (vertical velocity and time in air) and the My Jump app (time in air).
- Intraclass correlation coefficient (ICC) was used to compare measurements.
Main Results:
- The My Jump app showed a perfect correlation (ICC=1.000) with the force platform when using time in air.
- A very high correlation (ICC=0.996) was found when comparing with the force platform's vertical velocity calculation.
- The app demonstrated a small error margin of 0.78%.
Conclusions:
- The My Jump application is a suitable method for evaluating vertical jump performance.
- Results indicate the app is appropriate for assessing jump height, though it slightly overestimates compared to force platforms.
- This mobile application offers a practical alternative for jump performance analysis.
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