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KMID : 0608320170240020001
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Physical Therapy Korea
2017 Volume.24 No. 2 p.1 ~ p.8
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Comparison of the Effects of Different Foot Positions During Body-lifting in Wheelchair on Shoulder Muscle Activities, Peak Plantar Pressure,Knee Flexion Angle, and Rating Perceived Exertion in Individuals With Spinal Cord Injury
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Lee Wang-Jae
Lim One-Bin
Yoon Byoung-Gu
Lee Bum-Suk
Yi Chung-Hwi
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Abstract
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Background: Individuals with spinal cord injury (SCI) rely on their upper limbs for body-lifting activity (BLA). While studies have examined the electromyography (EMG) and kinematics of the shoulder joints during BLA, no studies have considered foot position during BLA.
Objects: This study compared the effects of different foot positions during BLA on the shoulder muscle activities, peak plantar pressure, knee flexion angle, and rating perceived exertion in individuals with SCI.
Methods: The study enrolled 13 mens with motor-complete paraplegic SCI, ASIA (American Spinal Injury Association) A or B. All subjects performed BLA with the feet positioned on the wheelchair footrest and on the floor independently. Surface EMG was used to collect data from the latissimus dorsi, pectoralis major, serratus anterior, and triceps brachii. The peak plantar pressure was measured using pedar-X and the knee flexion angle with Image J. Borg’s rating perceived exertion scale was used to measure the physical activity intensity level. The paired t-test was used to compare the shoulder muscle activities, peak plantar pressure, knee flexion angle, and rating perceived exertion between the two feet positions during BLA.
Results: The activity of the latissimus dorsi, pectoralis major, serratus anterior, and triceps brachii and rating perceived exertion decreased significantly and the peak plantar pressure and knee flexion angle increased significantly when performing BLA with the feet positioned on the wheelchair footrest compared with on the floor (p<.05).
Conclusion: These findings suggest that individuals with SCI may perform BLA with the feet positioned on the wheelchair footrest for weight-relief lifting to decrease the shoulder muscle activities and the rating perceived exertion and to increase the peak plantar pressure and the knee flexion angle.
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KEYWORD
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Body-lifting activity, Shoulder muscle activities, Spinal cord injury
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Listed journal information
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