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

Theodoras M. Bampouras, Nicola Relph, Duncan Orme, Joseph I Esformes

Research output: Contribution to journalArticle

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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.
Original languageEnglish
Pages (from-to)101-105
JournalIsokinetics and Exercise Science
Volume21
Issue number2
DOIs
Publication statusPublished - 2013

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Reproducibility of Results
Costs and Cost Analysis
Equipment and Supplies
Muscles

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Bampouras, Theodoras M. ; Relph, Nicola ; Orme, Duncan ; Esformes, Joseph I. / Validity and reliability of the Myotest Pro wireless accelerometer in squat jumps. In: Isokinetics and Exercise Science. 2013 ; Vol. 21, No. 2. pp. 101-105.
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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.",
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Validity and reliability of the Myotest Pro wireless accelerometer in squat jumps. / Bampouras, Theodoras M.; Relph, Nicola; Orme, Duncan; Esformes, Joseph I.

In: Isokinetics and Exercise Science, Vol. 21, No. 2, 2013, p. 101-105.

Research output: Contribution to journalArticle

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AB - 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.

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