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KMID : 1206220200270030067
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Journal of Korean Academy of Physical Therapy Science
2020 Volume.27 No. 3 p.67 ~ p.74
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Change of lower limb muscle activation according to the use of arm sling in normal subjects
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Oh Gku-Bin
Son Ga-Eul
Kim Seo-Yeon
Kim Hae-Deun
Back Seung-Min
Song Hyen-Su
Yun Sang-Hyeok
Cho Ki-Hun
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Abstract
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Background: The purpose of this study was to investigate the change of lower limb muscle activation according to the use of arm sling in normal subjects.
Design: Cross-sectional Study
Methods: Seven healthy subjects (6 males and 1 female, 25.42 years, 173.57 cm, 71.71 kg) were recruited on a voluntary basis. To measure the lower limb muscle activation during walking with and without arm sling, we used a wireless surface electromyography (sEMG) (FreeEMG1000, BTS Bioengineering, Milano, Italy). Six wireless sEMG electrodes were attached to the following three major muscle groups of the both side lower limb: rectus femoris, biceps femoris, medial gastrocnemius. All subjects wore arm sling on their right side during measurement.
Results: In the stance phase, there was a significant increase in right side rectus femoris muscle activation in walking without arm sling compared to the walking with arm sling (p<.05). Additionally, In the stance phase, there was a significant increase in left side tibialis anterior muscle activation in walking without arm sling compared to the walking with arm sling (p<.05).
Conclusion: The results of this study suggest that there is a significant association between the arm swing restriction and lower limb muscle activation. Therefore, it seems that it can be applied as basic data for gait training with an arm slings.
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KEYWORD
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Sling, Muscle activation, Gait, Arm swing
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