Validity of a contact mat and accelerometric system to assess countermovement jump from flight time |
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| Authors: | Robert Stanton Thomas M Doering Campbell Macgregor Nattai Borges Luke Delvecchio |
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| Institution: | 1. School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Australia;2. Bond Institute of Health and Sport, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia;3. Sport, Health and Wellness, Faculty of Community Wellbeing and Development, Toi Ohomai Institute of Technology, Tauranga, New Zealand;4. School of Environmental and Life Sciences, Faculty of Science, The University of Newcastle, Ourimbah, Australia |
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| Abstract: | Countermovement jump (CMJ) height is an important parameter in physical performance. This study compared CMJ height measured using ChronoJump contact mat (CJ) and Myotest accelerometer (MT) systems with a force platform (FP). Thirty recreationally active adults (32.1 ± 10.4 years, 75.9 ± 12.0 kg, 173.2 ± 6.3 cm) completed a CMJ protocol where height was simultaneously recorded using the three systems. CJ and MT measures were strongly and significant correlated (r = 0.65, 0.66, respectively; p < 0.05) with FP. CJ-derived measures were not significantly different to FP measures (p > 0.05), yet MT-derived measures were significantly different from those obtained using the FP (p < 0.05). Systematic bias was observed between FP and the CJ and between FP and MT. This study demonstrates the validity of CJ and MT systems for the assessment of CMJ height. Systematic bias and between-device differences in measurement should be considered when interpreting and comparing data from these devices. |
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| Keywords: | accelerometry countermovement jump performance force plate |
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