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ISSN: 2329-9096

International Journal of Physical Medicine & Rehabilitation
Open Access

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Research Article

Does Neuromuscular Electrical Stimulation Improve Muscular Strength Gains of the Vastus Medialis Muscle

Alicia Canning and Sylvain Grenier*

Department of School of Human Kinetics, Laurentian University, Sudbury, Canada

*Corresponding Author:
Sylvain Grenier
School of Human Kinetics
Laurentian University Sudbury
Ontario P3E 2C6, Canada
Tel: (705) 675-1151 Ex: 1095
E-mail: [email protected]

Received Date: April 19, 2014; Accepted Date: June 17, 2014; Published Date: June 20, 2014

Citation: Canning A, Grenie S (2014) Does Neuromuscular Electrical Stimulation Improve Muscular Strength Gains of the Vastus Medialis Muscle. Int J Phys Med Rehabil 2:207. doi: 10.4172/2329-9096.1000207

Copyright: © 2014 Canning A, 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.

 

Abstract

Background: Neuromuscular electrical stimulation is currently being used for treatment in rehabilitation situations. Studies indicate that neuromuscular electrical stimulation increases muscle strength in weakened muscles; however few studies have examined the effect of neuromuscular electrical stimulation and muscle strength on healthy muscles or compared combinations of NMES and exercise. Objective: To compare the effectiveness of three methods in strengthening the vastus medialis muscle in healthy adults. Methods: Fifteen healthy male participants between the ages of 18-25 participated in this randomized repeated measures study. The participants were randomly assigned into three (neuromuscular electrical stimulation, neuromuscular electrical stimulation + exercise or exercise only) groups of five. They performed eccentric stepdowns for 5 minutes, 3 times a week for 4 weeks. The force of the vastus medialis muscle was measured with an isometric leg extension at 60 degrees, using the Biodex force dynamometer (Model 820-110). This test was performed a total of three times on each participant: pre-testing, mid-testing and final-testing. Results: A two-way analysis of variance and a post hoc Scheffe’s test revealed a significant test interaction difference between group and test time. In the neuromuscular electrical stimulation group the mean force from the pre-test (121.4Nm), to the final-test (165.8Nm) significantly increased compared to the pre and post-tests in the other groups. Conclusion: Neuromuscular electrical stimulation training was most effective in increasing muscle strength of the vastus medialis muscle in healthy participants after four weeks.

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