Validity and reliability of the Myotest Pro wireless accelerometer in squat jumps

Bampouras, Theodoros, Relph, Nicola, Orme, Duncan and Esformes, Joseph (2013) Validity and reliability of the Myotest Pro wireless accelerometer in squat jumps. Isokinetics and Exercise Science, 21 (2). pp. 101-105.

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Official URL: https://doi.org/10.3233/IES-130484

Abstract

BACKGROUND: Portable and cost-effective accelerometers can yield instantaneous results of force, power, and velocity, with minimum set-up time to assess muscle power. However, such devices must also produce both valid and reliable data.
OBJECTIVE: The current study assessed the validity and reliability of the Myotest Pro wireless accelerometer (ACC).
METHODS: Thirty physically active males performed two squat jump, on two separate sessions. The jump was recorded simultaneously by a force platform and ACC, which was attached to a barbell resting on the subjects' shoulders. Validity was determined using Pearson correlation coefficient (r) and t-test between the maximum force platform (F_{FP}) and ACC (F_{ACC}) force. Between session reliability of F_{ACC}, power (P_{ACC}) and velocity (V_{ACC}) from the ACC were assessed with t-test, intraclass correlation coefficient (ICC), and coefficient of variation (CV).
RESULTS: F_{ACC} correlated highly to F_{FP} (r=0.815, p< 0.05), but there was a proportionate ratio bias of 0.81. There was no difference between sessions (p> 0.05) for any variable. High ICCs were found for all variables (F_{ACC} 0.90; P_{ACC} 0.80; V_{ACC} 0.84). Low CV was found for F_{ACC} (2.1%), P_{ACC} (3.3%) and V_{ACC} (3.2%).
CONCLUSIONS: ACC is a valid and reliable tool to use for assessing barbell movement, but caution in power data interpretation is needed.

Item Type: Article
Journal or Publication Title: Isokinetics and Exercise Science
Publisher: IOS Press
ISSN: 0959-3020
Departments: Faculty of Health and Science > Medical and Sports Sciences > Sports and Physical Activity > Sport
Depositing User: Anna Lupton
Date Deposited: 10 Feb 2017 09:59
Last Modified: 20 Mar 2017 13:52
URI: http://insight.cumbria.ac.uk/id/eprint/2664

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