The Effects of Vibration Exposure on Lower-Limb Extensor Muscles? Stiffness, Elasticity, and Strength Responses in Untrained Young Individuals: A Randomized Controlled Trial
No Thumbnail Available
Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Human Kinetics Publ inc
Abstract
Objectives: The whole-body vibration (WBV) effects on muscle strength show inconsistent results. Moreover, there is no study about the WBV effect on stiffness, elasticity, and muscle strength. Therefore, the study aimed to examine the effect of WBV exposure with static squat posture on the stiffness, elasticity, and strength of the lower-limb extensor muscles. Material and Methods: Forty healthy untrained young adults were divided into WBV and control groups. The experimental group received WBV exposure on 2 nonconsecutive days of the week, for 6 weeks. The MyotonPRO device was used for the assessment of the knee extensor and the ankle dorsiflexors' stiffness and elasticity. Isometric muscle strength was evaluated with a hand-held dynamometer. All measurements were done by the same assessor at baseline, and the following 6 weeks. Results: Significant group-by-time interactions were found for the elasticity scores of the right (d = 0.84, P = .01) and left (d = 0.77, P = .02) ankle dorsiflexors. Similar to the elasticity measurements, significant group-by-time interactions were observed in the muscle strength scores of the right (d = 0.45, P = .046) and left (d = 1.25, P < .001) ankle dorsiflexors. No significant effects were observed in any of the evaluated muscle stiffness measurements (P> .05), and there was no significant group-by-time interaction in knee-extensor muscle strength and elasticity scores (P > .05). Conclusions: The study results indicate that if the ankle dorsiflexor strength and elasticity are desired to be increased, the 6-week WBV exposure in a static squat posture can be used in healthy individuals.
Description
Çevik Saldıran, Tülay/0000-0003-4048-1251; Kara, İlke/0000-0003-4974-533X
Keywords
biomechanics, knee, ankle, muscle activation
Turkish CoHE Thesis Center URL
Citation
1
WoS Q
Q3
Scopus Q
Q3
Source
Volume
32
Issue
4
Start Page
415
End Page
423