Journal of Rehabilitation Research & Development (JRRD)

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Volume 53 Number 3, 2016
   Pages 359 — 368

Abstract — Effects of high-speed power training on muscle strength and power in patients with multiple sclerosis

Carlos Medina-Perez, PhD;1* Fernanda de Souza-Teixeira, PhD;2 Rodrigo Fernandez-Gonzalo, PhD;3 Jose-Aldo Hernandez-Murua, PhD;4 Jose Antonio de Paz-Fernandez, PhD5

1University Isabel I, Burgos, Spain; 2Department of Physical Education and Health, School of Physical Education, Federal University of Pelotas, Pelotas, Brazil; 3Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; 4School of Physical Education, Autonomous University of Sinaloa, Sinaloa, Mexico; 5Institute of Biomedicine, University of León, León, Spain

Abstract — This study examined the effects of a high-speed power training program in peak muscle power and maximal voluntary isometric contraction (MVIC) of knee extensors in patients with relapsing-remitting multiple sclerosis (MS). Forty patients, 20 women (age 42.8 +/– 10.3 yr) and 20 men (age 44.0 +/– 8.7 yr) diagnosed with relapsing-remitting MS were randomly assigned, with respect to sex, to either an exercise group or a control group. Participants from the exercise group performed 12 wk of supervised muscle power training of knee extensors. All subjects were tested for MVIC and peak muscle power at baseline and after the training intervention. A strain gauge was used to measure the MVIC, and peak muscle power was assessed with a linear encoder at five relative loads. The training-related effects were assessed using a t-test. The results showed no significant changes in the control group from baseline to postintervention evaluation. In contrast, the exercise group significantly increased MVIC (10.8%; p < 0.05) and muscle power at 40, 50, 60, 70, and 80% of the MVIC by 21.8, 14.5, 17.3, 19.4, and 22.3%, respectively (p < 0.01), after the training. These findings suggest that 12 wk of high-speed power training improve both MVIC and muscle power at five different loads in patients with relapsing-remitting MS.

Key words: disability, encoder, exercise prescription, leg performance, lower limb, multiple sclerosis, muscle power, muscle strength, rehabilitation, resistance training.


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This article and any supplementary material should be cited as follows:
Medina-Perez C, de Souza-Teixeira F, Fernandez-Gonzalo R, Hernandez-Murua J, de Paz-Fernandez JA. Effects of high-speed power training on muscle strength and power in patients with multiple sclerosis. J Rehabil Res Dev. 2016;53(3):359–68.
http://dx.doi.org/10.1682/JRRD.2014.08.0186
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