alexa Effect of Trunk Extensor Muscle Fatigue on Postural Sta
ISSN: 2573-0312

Journal of Physiotherapy & Physical Rehabilitation
Open Access

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Research Article

Effect of Trunk Extensor Muscle Fatigue on Postural Stability in Healthy Young Adults

Isha Akulwar* and Saili Mulgaonkar

K. J. Somaiya College of Physiotherapy, Maharashtra, India

*Corresponding Author:
Isha Akulwar
Assistant Professor, K. J. Somaiya College of Physiotherapy
Ayurvihar, Sion, Mumbai-400022, Maharashtra, India
Tel: +919769490996
E-mail: [email protected]

Received date: June 10, 2017; Accepted date: June 20, 2017; Published date: June 27, 2017

Citation: Akulwar I, Mulgaonkar S (2017) Effect of Trunk Extensor Muscle Fatigue on Postural Stability in Healthy Young Adults. Physiother Rehabil 2:144. doi:10.4172/2573-0312.1000144

Copyright: © 2017 Akulwar I, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited



Objective: To determine the effect of trunk extensor muscle fatigue on postural stability in healthy young adults using clinical measures Design: Prospective, experimental, within subject, repeated measures design Setting: Tertiary care hospital and research centre Participants: 70 healthy adults in the age group of 20 to 25 years, volunteer sample Intervention: Fatigue of trunk extensor muscles was induced by repeated dynamic contractions performed to maximum exhaustion. Postural stability was assessed under three different conditions viz. No fatigue, Fatigue and Recovery. Main Outcome Measures: One-leg standing balance test and Functional reach test were used to assess static and dynamic postural stability respectively. Results: Wilcoxon matched-paired signed ranked test was used for comparison of postural stability in No fatigue and Fatigue condition with p-value<0.001. One-leg standing balance test showed a significant decrease from No fatigue (15.16+8.47 seconds) to Fatigue (5.89+5.7 seconds) condition. Functional reach test values showed a significant decrease from No fatigue condition (12.34+2.61 inches) to fatigue condition (12.27+2.6 inches). Mean recovery time was 12.5+3.27 minutes for One-leg standing balance test and 11.93+3.22 minutes for the Functional reach test. Further analysis using Mann Whitney test showed no significant difference (P=0.288) between the recovery time of one-leg standing balance test and functional reach test. Conclusions: Trunk extensor fatigue significantly affects static and dynamic postural stability in healthy young adults. Complete recovery takes 12.5+3.27 minutes for static and 11.93+3.22 minutes for dynamic postural stability. Results of this study stress the importance of intact trunk extensor muscle function on the regulation of static and dynamic postural stability in healthy young adults. However, more studies are required to determine the effect of trunk extensor muscle fatigue using other clinical measures and in individuals with neuromuscular disorders.


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