Concurrent validity of the portable gFlight system compared to a force plate to measure jump performance variables

Arran Parmar, Ashleigh Keenan, Gill Barry

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Abstract

Lower-limb strength and power is commonly assessed indirectly by measuring jump performance. A novel portable system (gFlight) that can be used in applied settings provides measures of jump performance. The aim of this study was to validate jump performance measures provided by the gFlight to those provided by a force plate. Thirty-six participants performed three countermovement jump (CMJ) and drop jump (DJ) trials. Jump height (JH), contact time (CT), and reactive strength index (RSI) were simultaneously recorded by a force plate and gFlight sensors to assess concurrent validity. Significantly higher measures of JH during the CMJ (Mean: +8.79 ± 4.16 cm, 95% CI: +7.68 to 9.90 cm,
Original languageEnglish
JournalPhysiological Measurement
Early online date9 Dec 2020
DOIs
Publication statusE-pub ahead of print - 9 Dec 2020

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