Evaluation of measurement reliability for selected indices of postural stability based on data from the GYKO Inertial Sensor System

Janusz Jaworski; Grzegorz Lech; Kazimierz Witkowski; Rafał Kubacki; Paweł Piepiora

doi:10.5114/biolsport.2024.132986

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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2/2024
vol. 41

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abstract:

Original paper

Evaluation of measurement reliability for selected indices of postural stability based on data from the GYKO Inertial Sensor System

Janusz Jaworski

¹

,

Grzegorz Lech

¹

,

Kazimierz Witkowski

²

,

Rafał Kubacki

²

,

Paweł Piepiora

²

Faculty of Physical Education and Sport, University of Physical Education in Kraków, Poland
Faculty of Physical Education and Sports, Wroclaw University of Health and Sport Sciences, 51-612 Wrocław, Poland

Biol Sport. 2024; 41(2):155–161

DOI: https://doi.org/10.5114/biolsport.2024.132986

Online publish date: 2023/11/17

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The main aim of this study is to use comprehensive statistical analyses to evaluate measurement reliability of selected variables that characterize postural stability. The study examined twenty-nine healthy nonathlete students. The examinations were performed twice, with a one-week interval. The Microgate GYKO inertial sensor system was used to evaluate the reliability of variables that characterize postural stability. The relative reliability of the repeated test was evaluated using the intraclass correlation coefficient (ICC) with 95% confidence interval (95% CI). Next, the standard error of measurement (SEM) and minimal detectable change (MDC) were computed. Relative reliability of the repeated test for all analysed variables of ICC ranged from 0.31 to 0.75. For four variables, ICC values were ca. 0.7, i.e., they can be considered as good. For four other variables, ICC ranged from 0.41 to 0.54, with these values considered fair. Satisfactory reproducibility of postural stability measurements using the GYKO inertial sensor system demonstrates that it can offer an inexpensive and efficient alternative to measurements that use force balance platforms.

keywords:

Evaluation of measurement reliability for selected indices of postural stability based on data from the GYKO Inertial Sensor System

Janusz Jaworski 1 , Grzegorz Lech 1 , Kazimierz Witkowski 2 , Rafał Kubacki 2 , Paweł Piepiora 2

Postural stability, Accelerometer, Test-retest reliability, Intraclass correlation coefficient, Students

Janusz Jaworski

¹

,

Grzegorz Lech

¹

,

Kazimierz Witkowski

²

,

Rafał Kubacki

²

,

Paweł Piepiora

²