A1 Journal article (refereed)
Test−Retest Reliability of Isokinetic Ankle, Knee and Hip Strength in Physically Active Adults Using Biodex System 4 Pro (2023)

Tuominen, J., Leppänen, M., Jarske, H., Pasanen, K., Vasankari, T., & Parkkari, J. (2023). Test−Retest Reliability of Isokinetic Ankle, Knee and Hip Strength in Physically Active Adults Using Biodex System 4 Pro. Methods and Protocols, 6(2), Article 26. https://doi.org/10.3390/mps6020026

JYU authors or editors

Publication details

All authors or editors: Tuominen, Juho; Leppänen, Mari; Jarske, Heidi; Pasanen, Kati; Vasankari, Tommi; Parkkari, Jari

Journal or series: Methods and Protocols

eISSN: 2409-9279

Publication year: 2023

Publication date: 09/03/2023

Volume: 6

Issue number: 2

Article number: 26

Publisher: MDPI AG

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/mps6020026

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/86030

Abstract

Background: The isokinetic dynamometry is considered a gold standard in muscle strength testing. The reliability of lower limb isokinetic strength measurements has not been thoroughly evaluated. Objective: To examine the test−retest reliability of isokinetic ankle plantar and dorsiflexion, ankle inversion and eversion, knee extension and flexion and hip abduction and adduction strength in physically active adults using Biodex System 4 Pro. Methods: Peak torques (PTs) and average peak torques (APTs) of the dominant and nondominant lower limbs were tested twice in 19 physically active adults 7 to 14 days apart. Results: The intraclass correlation coefficients (ICC) values varied from excellent to moderate and coefficient of variation of typical error (CVTE) values were 6.6–19.5%. Change in the mean expressed as a percent varied from −3.1% to 9.6%. There was no difference in the reliability between PT and APT values. Dominant lower limb was more reliable in every case if there was difference between limbs. Conclusion: Test−retest reliability of isokinetic ankle, knee and hip strength in physically active adults using Biodex System 4 is mostly good or excellent. However, the observed range of the random variation has to be noted when using it in scientific follow-up studies or evaluation of patient progress in clinical settings.

Keywords: muscle strength; ankles; knees; hip; measuring methods; measuring instruments (devices); reliability (science)

Free keywords: isokinetic; dynamometry; Biodex; test−retest; reliability; ankle; knee; hip

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2023

JUFO rating: 1