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Issue title: TBI and Aging
Guest editors: Wayne A. Gordon
Article type: Research Article
Authors: Kiselka, Anitaa; * | Greisberger, Andreab | Heller, Marioc
Affiliations: [a] Day Care Center for Multiple Sclerosis, Caritas Socialis, Vienna, Austria | [b] Department of Health Sciences, FH Campus Vienna, Vienna, Austria | [c] Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria
Correspondence: [*] Address for correspondence: Anita Kiselka, Day Care Center for Multiple Sclerosis, Caritas Socialis, Oberzellergasse 1, 1030 Vienna, Austria. Tel.: +43 664 324 20 83; Fax: +43 1 71753 3639; E-mail: [email protected]
Abstract: Background:Resistance exercise is effective in improving muscle strength and preventing muscle weakness in multiple sclerosis (MS) patients. Control of resistance training intensity based on perceived muscular effort is applicable to healthy individuals, yet there is no evidence of its utility for MS patients. Objective:To compare perception of muscular effort in MS patients to healthy controls. Methods:Based on their perception of muscular effort, twenty-five MS patients and twenty-eight controls adjusted static elbow extension tasks according to five levels on the OMNI-Resistance Exercise Scale. Elbow extension strength and muscle activity were measured via load cell dynamometer and surface electromyography (EMG) and related to each participant’s maximal voluntary contraction (MVC) strength and muscle activity. Two-way analysis of variance was used to evaluate statistical significance. Results:There were no statistically significant differences between MS patients and healthy controls, they produced similar relative torque values (F1 = 0.196; p > 0.05) and extensor muscle activities (F2,617 = 1.556; p > 0.05) across all effort levels. Conclusion:No differences were found in the perception of muscular effort in MS patients and the age-matched control group. Future studies should explore, whether rating of perceived exertion is an effective instrument to control resistance training intensity in MS patients.
Keywords: Multiple sclerosis, perception, effort, exertion, rating scale, muscle strength, surface electromyography, upper extremity
DOI: 10.3233/NRE-130863
Journal: NeuroRehabilitation, vol. 32, no. 2, pp. 415-423, 2013
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