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Reduced Muscle Activity of the Upper Extremity in Individuals with Spinal Cord Injuries

Author

Listed:
  • Kyung-Sun Lee

    (Division of Energy Resources Engineering and Industrial Engineering, Kangwon National University, Chuncheon-si 24341, Gangwon-do, Korea)

  • Mobasshira Zaman

    (Department of Industrial and Systems Engineering, Northern Illinois University, DeKalb, IL 60115, USA)

  • Jaejin Hwang

    (Department of Industrial and Systems Engineering, Northern Illinois University, DeKalb, IL 60115, USA)

Abstract

Compromised physical ability due to musculoskeletal impairment among spinal cord injury (SCI) patients is known to negatively affect their quality of life. It is essential to comprehensively understand the muscle strength of the upper extremity among patients with SCI to enhance muscle function and capacity to engage in an active lifestyle. The objective of this study was to evaluate the muscle strength of 15 upper extremity muscles among patients with SCI and compare the relative weakness of individual muscles to the control group. Seven male patients with SCI with ASIA impairment scale D and E and 33 males in the control group participated in this study. Each participant performed maximal voluntary contraction of individual muscles, and the electromyography data were recorded. The results showed that the majority of the upper extremity muscles (12 out of 15) showed considerable weakness (24 to 53%) relative to the control group. Furthermore, the relative strength (ranking) of individual muscles among 15 upper extremity muscles was different between patients with SCI and the control group. This information would be useful to the selective strengthening of specific muscles as an intensive rehabilitation effort and prevent overuse and adverse injuries due to excessive muscle training.

Suggested Citation

  • Kyung-Sun Lee & Mobasshira Zaman & Jaejin Hwang, 2022. "Reduced Muscle Activity of the Upper Extremity in Individuals with Spinal Cord Injuries," IJERPH, MDPI, vol. 19(8), pages 1-11, April.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:8:p:4708-:d:793233
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