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Article

Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion

1
Health Research Centre; Faculty of Educational Sciences, University of Almería, 04102 Almería, Spain
2
Laboratory of Kinesiology, Biomechanics and Ergonomics, Research Central Services, University of Almería, 04102 Almería, Spain
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(2), 399; https://doi.org/10.3390/s20020399
Received: 8 December 2019 / Revised: 5 January 2020 / Accepted: 8 January 2020 / Published: 10 January 2020
(This article belongs to the Special Issue Sensors for Biomechanics Application)
A decrease in ankle dorsiflexion causes changes in biomechanics, and different instruments have been used for ankle dorsiflexion testing under static conditions. Consequently, the industry of inertial sensors has developed easy-to-use devices, which measure dynamic ankle dorsiflexion and provide additional parameters such as velocity, acceleration, or movement deviation. Therefore, the aims of this study were to analyze the concurrent validity and test-retest reliability of an inertial device for measuring dynamic weight-bearing ankle dorsiflexion. Sixteen participants were tested using an inertial device (WIMU) and a digital inclinometer. Ankle dorsiflexion from left and right ankle repetitions was used for validity analysis, whereas test-retest reliability was analyzed by comparing measurements from the first and second days. The standard error of the measurement (SEM) between the instruments was very low for both ankle measurements (SEM < 0.6°). No significant differences between instruments were found for the left ankle measurement (p > 0.05) even though a significant systematic bias (~1.77°) was found for the right ankle (d = 0.79). R2 was very close to 1 in the left and right ankles (R2 = 0.85–0.89) as well as the intraclass correlation coefficient (ICC > 0.95). Test-retest reliability analysis showed that systematic bias was below 1° for both instruments, even though a systematic bias (~1.50°) with small effect size was found in the right ankle (d = 0.49) with WIMU. The ICC was very close to 1 and the coefficient of variation (CV) was lower than 4% in both instruments. Thus, WIMU is a valid and reliable inertial device for measuring dynamic weight-bearing ankle dorsiflexion. View Full-Text
Keywords: inertial sensors; wearable sensors; kinematics; WIMU inertial sensors; wearable sensors; kinematics; WIMU
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MDPI and ACS Style

Oliva-Lozano, J.M.; Martín-Fuentes, I.; Muyor, J.M. Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion. Sensors 2020, 20, 399. https://doi.org/10.3390/s20020399

AMA Style

Oliva-Lozano JM, Martín-Fuentes I, Muyor JM. Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion. Sensors. 2020; 20(2):399. https://doi.org/10.3390/s20020399

Chicago/Turabian Style

Oliva-Lozano, José M., Isabel Martín-Fuentes, and José M. Muyor. 2020. "Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion" Sensors 20, no. 2: 399. https://doi.org/10.3390/s20020399

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