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논문 기본 정보

자료유형
학술저널
저자정보
Josefa Angelie Revilla (Kyushu University) Ping Yeap Loh (Kyushu University) Satoshi Muraki (Kyushu University)
저널정보
대한산업공학회 Industrial Engineering & Management Systems Industrial Engineering & Management Systems Vol.18 No.4
발행연도
2019.12
수록면
591 - 599 (9page)
DOI
10.7232/iems.2019.18.4.591

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초록· 키워드

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This study investigated the immediate impacts of short-term handle vibration on hand functions, upper limb discomfort, and forearm muscle responses during hand grip test and task performance of seven healthy young adults. The task was to grip the handlebar for 5 minutes with 50% perceived strength under two conditions: with handle vibration (HV) and without handle vibration (NHV). Activities of forearm muscles namely flexor carpi radialis (FCR), flexor of the fingers (FF), flexor carpi ulnaris (FCU), and extensor digitorum (ED) were recorded using surface electromyography (EMG), while post-task hand tests for finger dexterity, strength, and sensibility were also measured. These finger functions as well as muscle responses did not differ significantly between HV and NHV. The lacking effects might be associated to the inconsistencies on grip force during task, perhaps participants let go of the handle during the latter part. Meanwhile, perceived discomfort on the shoulder was significantly higher after HV than NHV and activity of FCR, FF, and ED during maximal grip test were significantly different (p < 0.05) as well. Specifically, muscle activities were lower by 12-15% after HV than NHV, indicating that HV might have influenced the ability to grip hardly. In conclusion, maximal grip test and discomfort rating can be a predictive parameter to determine the instantaneous effects of handle vibration.

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ABSTRACT
1. INTRODUCTION
2. METHOD
3. RESULTS
4. DISCUSSION
5. CONCLUSION
REFERENCES

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