COMPARISON OF METHODS FOR ASSESSING VERTICAL JUMP HEIGHT PERFORMANCE
Keywords: centre of mass, takeoff, maximum, velocity
AbstractRelationships, explained variance, measurement error, and limits of agreement were examined among field and laboratory countermovement vertical jump tests, including Vertec, 3D video, and force platform data. Data were simultaneously collected on a single countermovement jump trial for 13 female varsity volleyball players. Vertical jump height computed using maximum centre of mass (COM) velocity from force platform data demonstrated the greatest precision, as well as the strongest correlation (r=0.90), greatest explained variance (R2=0.81), and lowest standard error of the estimate (0.02m) in vertical 3D video COM displacement. Jump height calculation using maximum COM velocity may highlight relevant performance measures, providing jump height estimations more quickly and easily, and with greater precision via force platform analysis.
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