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KMID : 1189320210150010040
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Asian Spine Journal
2021 Volume.15 No. 1 p.40 ~ p.45
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Successful Use of the Hybrid Assistive Limb for Care Support to Reduce Lumbar Load in a Simulated Patient Transfer
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Miura Kousei
Kadone Hideki
Abe Tetsuya
Koda Masao
Funayama Toru
Noguchi Hiroshi
Kumagai Hiroshi
Nagashima Katsuya
Mataki Kentaro
Shibao Yosuke
Sato Kosuke
Kawamoto Hiroaki
Sankai Yoshiyuki
Yamazaki Masashi
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Abstract
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Study Design: Prospective experimental study in humans.
Purpose: To determine whether the hybrid assistive limb (HAL) for Care Support can reduce lumbar load during a patient transfer.
Overview of Literature: The prevalence of work-related low back pain (LBP) among nurses is high. In particular, transferring patients poses a high risk for LBP due to the large lumbar load. Attempts to reduce the lumbar load are crucial to avoid the risk of LBP. Therefore, we investigated the effects of the HAL for Care Support.
Methods: Nineteen volunteers (16 men, three women) lifted a 60-kg doll from a seated position to a standing position. The first transfer was performed without the HAL for Care Support, and the second was performed with the HAL for Care Support assistive robot. We evaluated transfer performance, the visual analog scale (VAS) score for lumbar fatigue, and electromyogram analyses of the trunk and hip.
Results: Four participants (two men, two women) succeeded with the HAL for Care Support even though they were unable to perform the task without it. The mean lumbar fatigue VAS score for all participants without the HAL for Care Support was 62 mm, while that with it was 43 mm. With lumbar assistance from the HAL for Care Support, subjective lumbar fatigue during the transfer decreased significantly. A power analysis indicated adequate statistical power to detect a difference in the VAS score for lumbar fatigue (0.99). The activity of the left gluteus maximus alone increased significantly during transfers with the HAL for Care Support. No adverse events occurred during use of the HAL for Care Support for transfers.
Conclusions: The HAL for Care Support was able to reduce lumbar load in a simulated patient transfer.
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KEYWORD
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Low back pain, Exoskeleton device, Patient transfer, Nurses
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