1. Validity and reliability of the Valkyria Trainer Balance® portable force platform in its isometric mode.
- Author
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Huerta Ojeda, Álvaro, Beltrán-Inostroza, Rodrigo, Yeomans-Cabrera, María-Mercedes, and Torres-Banduc, Maximiliano
- Subjects
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MULTITRAIT multimethod techniques , *THERAPEUTICS , *CRONBACH'S alpha , *RESEARCH methodology evaluation , *EXPIRATORY flow , *PSYCHOMETRICS , *RESEARCH methodology , *STATISTICAL reliability , *INTRACLASS correlation , *BODY movement , *COMPARATIVE studies , *POSTURAL balance , *MUSCLE contraction ,RESEARCH evaluation - Abstract
BACKGROUND: Isometric maximal voluntary force (IMVF) is essential for individuals' health and physical performance. Therefore, there is a need for valid and reliable devices to assess IMVF. OBJECTIVE: To determine the validity and reliability of the Valkyria Trainer Balance® portable force platform in its isometric mode. METHODS: Fifty-eight physically healthy individuals (30 men and 28 women) participated in the study. A repeated measures design was used to compare the inter-day test-retest reliability of peak force. The validity of the Valkyria Trainer Balance® force platform was determined by comparing the peak force with the ArtOficio® force platform. The analysis consisted of the intraclass correlation coefficient (ICC), standard error of measurement (SEM), and coefficient of variation (CV). A CV ⩽ 10% and ICC ⩾ 0.80 were considered acceptable reliability, while a ⩽ 5% and ICC ⩾ 0.90 were regarded as high reliability. RESULTS: CV the peak force showed high test-retest inter-day reliability (CV = 4.3% and ICC = 0.99). When comparing both force platforms, there was a 1.1% difference between the two devices. CONCLUSIONS: The results of this study demonstrate that the Valkyria Trainer Balance® force platform is valid and reliable for assessing IMVF in physically healthy individuals. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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