Is Lower Limb Closed Kinetic Chain Resistance Training applicable to the Patients with Spinal Muscular Atrophy Type III?

Poster Presentation
Paper ID : 1259-SSRC
Authors
1Department of Sports Pathology and Biomechanics, Faculty of Sports and Health Sciences, University of Tehran, Tehran, Iran
2Department of Sports Physiology and Health, Faculty of Sports Sciences and Health, University of Tehran, Tehran, Iran
3Professor of Neurology Neuromuscular Research Center, Shariati Hospital, Tehran University of Medical Sciences
41. Physical Medicine and Rehabilitation Department, Shariati Hospital, Tehran University of Medical Science, Tehran, Iran 2. Neuromuscular Research Center, Tehran University of Medical Sciences, Tehran, Iran
5Neuromuscular Research Center, Shariati Hospital, Tehran University of Medical Sciences
6Physical Medicine and Rehabilitation Department, Shariati Hospital, Tehran University of Medical Science, Tehran, Iran
Abstract
Background: Spinal muscular atrophy (SMA) is a rare genetic disease, type III of which is the mildest childhood type. Considering the progressive nature of the disease, weakness and muscle atrophy can impair the walking ability of type III patients over time. There are no drugs for providing a complete cure for this disease. Therefore, training and the rehabilitation could be an important approach for these patients. Also, no study has been conducted to investigate the effect of the lower limb closed kinetic chain training on these patients, to best of our knowledge.
Aim: The aim of this study was to investigate the feasibility and safety of closed kinetic chain resistance training program and its effect on lower limb muscle strength in patients with SMA type III. In order to achieve it, a tool called "Sports rehabilitation device for lower limb muscles with the ability to adjust the force of a person's weight" has been designed and built, which implements the desired exercise. This device has been registered as an invention at Iran Intellectual Property Center under number 110382.
Methodology: 14 candidates with SMA type III, 18-39 years old, took part in the study and they were randomly organized in two control and training groups. The training group made a 10-week lower limb resistance training happen by the machine. To statistically analyze the results, SPSS version 27 was used which the analysis of covariance method.
Results: The exercise was completely risk-free and no decrease in the patients’ performance was observed. A meaningful increase was observed for the maximum isometric strength of hip flexors and extensors (P-value ≤0.05). While there was a slight increase in the strength of knee flexors and extensors, no significant improvements were showed in this case.
Conclusion: The closed kinetic chain resistance training by the designed device not only is safe in the patients with SMA type III but it is also advantageous. To ensure that exercising is safe for these patients’ further investigation on large population and also with prolonged time are needed in the future.
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