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Myhill, N, Weaving, D, Robinson, M, Barrett, S and Emmonds, S (2023) Concurrent validity and between-unit reliability of a foot-mounted inertial measurement unit to measure velocity during team sport activity. Science and Medicine in Football. ISSN 2473-3938
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Concurrent validity and between unit reliability of a foot mounted inertial measurement unit to measure velocity during team sport activity.pdf - Published Version Available under License Creative Commons Attribution. Download (4MB) | Preview |
Abstract
The concurrent validity and between-unit reliability of a foot-mounted inertial measurement unit (F-IMU) was investigated during linear and change of direction running drills. Sixteen individuals performed four
repetitions of two drills (maximal acceleration and flying 10m sprint) and five repetitions of a multi-directional movement protocol. Participants wore two F-IMUs (Playermaker) and 10 retro-reflective
markers to allow for comparisons to the criterion system (Qualisys). Validity of the F-IMU derived velocity was assessed via root-mean-square error (RMSE), 95% limits of agreement (LoA) and mean difference with 95% confidence interval (CI). Between-unit reliability was assessed via intraclass correlation (ICC) with 90% CI and 95% LoA. The mean difference for instantaneous velocity for all participants and drills combined was −0.048 ± 0.581 m ∙ s−1, the LoA were from −1.09 to −1.186 m ∙ s−1 and RMSE was 0.583m ∙ s−1. The ICC ranged from 0.84 to 1, with LoA from −7.412 to 2.924 m ∙ s−1. Differences were dependent on the reference speed, with the greatest absolute difference (−0.66 m ∙ s−1) found at velocities above 7 m ∙ s−1. Between-unit reliability of the F-IMU ranges from good to excellent for all locomotor characteristics. Playermaker has good agreement with 3D motion capture for velocity and good to excellent between-unit reliability.
| Item Type: | Article |
|---|---|
| Subjects: | R Medicine > RC Internal medicine > RC1200 Sports Medicine G Geography. Anthropology. Recreation > GV Recreation Leisure > GV561 Sports > GV711 Coaching |
| Divisions: | Sport & Exercise Sciences |
| Publisher: | Taylor and Francis Group |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 19 Jul 2023 08:20 |
| Last Modified: | 19 Jul 2023 08:30 |
| DOI or ID number: | 10.1080/24733938.2023.2237493 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/20429 |
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