A below-knee compression garment reduces fatigue-induced strength loss but not knee joint position sense errors
- PDF / 1,146,273 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 84 Downloads / 149 Views
ORIGINAL ARTICLE
A below‑knee compression garment reduces fatigue‑induced strength loss but not knee joint position sense errors János Négyesi1 · Li Yin Zhang2 · Rui Nian Jin2 · Tibor Hortobágyi3 · Ryoichi Nagatomi1,2 Received: 16 December 2019 / Accepted: 19 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose We examined the possibility that wearing a below-knee compression garment (CG) reduces fatigue-induced strength loss and joint position sense (JPS) errors in healthy adults. Methods Subjects (n = 24, age = 25.5 ± 4 years) were allocated to either one of the treatment groups that performed 100 maximal isokinetic eccentric contractions at 30°−1 with the right-dominant knee extensors: (1) with (EXPCG) or (2) without CG (EXP) or to (3) a control group (CONCG: CG, no exercise). Changes in JPS errors, and maximal voluntary isometric contraction (MVIC) torque were measured immediately post-, 24 h post-, and 1 week post-intervention in each leg. All testing was done without the CG. Results CG afforded no protection against JPS errors. Mixed analysis of variance (ANOVA) revealed that absolute JPS errors increased post-intervention in EXPCG and EXP not only in the right-exercised (52%, p = 0.013; 57%, p = 0.007, respectively) but also in the left non-exercised (55%, p = 0.001; 58%, p = 0.040, respectively) leg. Subjects tended to underestimate the target position more in the flexed vs. extended knee positions (75–61°: − 4.6 ± 3.6°, 60–50°: − 4.2 ± 4.3°, 50–25°: − 2.9 ± 4.2°), irrespective of group and time. Moreover, MVIC decreased in EXP but not in EXPCG and CONCG at immediately post-intervention (p = 0.026, d = 0.52) and 24 h post-intervention (p = 0.013, d = 0.45) compared to baseline. Conclusion Altogether, a below-knee CG reduced fatigue-induced strength loss at 80° knee joint position but not JPS errors in healthy younger adults. Keywords Isokinetic exercise · Eccentric contractions · Proprioception · Target-matching · Healthy
Communicated by Lori Ann Vallis. János Négyesi and Li Yin Zhang contributed equally to this work. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00421-020-04507-1) contains supplementary material, which is available to authorized users. * János Négyesi [email protected] 1
Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, Sendai, Japan
2
Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
3
Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
Abbreviations ANOVA Analysis of variance CG Compression garment CONCG Control group, receiving CG EXPCG Treatment group #1, performing isokinetic training with below-knee CG EXP Treatment group #2, performing isokinetic training without below-knee CG JPS Joint position sense M Peak torque MVIC Maximal voluntary isometric
Data Loading...
