지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.6
- 수록면
- 253 - 264 (12page)
- DOI
- 10.5143/JESK.2019.38.3.253
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초록· 키워드
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Objective: The aims of this study is to compare the workloads at different work-rest period (Standard & non-standard work) in lumbar flexion work and to find a more suitable cycle time for the worker.
Background: In the industrial field, there are many works that cause lumbar flexion and it is main risk factor associated with Work-related Musculoskeletal Disorders (WMSDs). To reduce the workload of the worker, a lot of study has been studied on the work-rest cycle time and standard working hours. Nevertheless, in the field, "nonstandard work" without adequate rest period is frequently performed by workers to finish work fast. This non-standard work can cause more fatigue and pressure on the worker.
Method: The experiment was conducted on 20 male adults. Participants performed the same task at the same time with two different work-break periods. The standard work consisted of 30 seconds of work / 15 seconds of rest, and the non-standard work consisted of 600 seconds of work / 300 seconds of rest. Two type of tasks were repeated for a total of 45 minutes. A variety of biomarkers were used to compare workloads (Flexion-relaxation phenomenon (FRP) parameter, EMG-signal, Heart rate, Subject discomfort rating).
Results: In the FRP variables, it was confirmed that the non-standard work caused more fatigue than the standard work. In the EMG-signal, there was more load in the non-standard work than standard work. There was no significant difference in heart rate and subjective discomfort, however, it is expected that there will be a significant difference in long hours of work more than 8 hours.
Conclusion: Despite the short working hours, non-standard work caused more fatigue than standard work, which is likely to show a bigger difference in actual working time (more than 8 hours). Therefore, managers should encourage to comply with standard work hours to reduce workload of workers.
Application: This study is expected to encourage workers to comply the standard working time, and further reduce industrial accidents caused by excessive work.
Background: In the industrial field, there are many works that cause lumbar flexion and it is main risk factor associated with Work-related Musculoskeletal Disorders (WMSDs). To reduce the workload of the worker, a lot of study has been studied on the work-rest cycle time and standard working hours. Nevertheless, in the field, "nonstandard work" without adequate rest period is frequently performed by workers to finish work fast. This non-standard work can cause more fatigue and pressure on the worker.
Method: The experiment was conducted on 20 male adults. Participants performed the same task at the same time with two different work-break periods. The standard work consisted of 30 seconds of work / 15 seconds of rest, and the non-standard work consisted of 600 seconds of work / 300 seconds of rest. Two type of tasks were repeated for a total of 45 minutes. A variety of biomarkers were used to compare workloads (Flexion-relaxation phenomenon (FRP) parameter, EMG-signal, Heart rate, Subject discomfort rating).
Results: In the FRP variables, it was confirmed that the non-standard work caused more fatigue than the standard work. In the EMG-signal, there was more load in the non-standard work than standard work. There was no significant difference in heart rate and subjective discomfort, however, it is expected that there will be a significant difference in long hours of work more than 8 hours.
Conclusion: Despite the short working hours, non-standard work caused more fatigue than standard work, which is likely to show a bigger difference in actual working time (more than 8 hours). Therefore, managers should encourage to comply with standard work hours to reduce workload of workers.
Application: This study is expected to encourage workers to comply the standard working time, and further reduce industrial accidents caused by excessive work.
목차
1. Introduction
2. Method
3. Results
4. Discussion & Conclusions
References
참고문헌 (35)
참고문헌 신청
Ahern, D. K. / 1988 / Comparison of lumbar paravertebral EMG patterns in chronic low back pain patients and non-patient controls / Pain 34(2):153~160
Alschuler, K. N. / 2009 / Flexion-relaxation and clinical features associated with chronic low back pain: a comparison of different methods of quantifying flexion-relaxation / Clinical Journal of Pain 25:760
Balci, R. / 2003 / The effect of work-rest schedules and type of task on the discomfort and performance of VDT users / Ergonomics 46(5):455~465
Borg, E. / 2006 / A comparison between three rating scales for perceived exertion and two different work tests / Scandinavian Journal of Medicine & Science in Sports 16(1):57~69
Descarreaux, M. / 2008 / Changes in the flexion relaxation response induced by lumbar muscle fatigue / BMC Musculoskeletal Disorders 9(1):10
Alschuler, K. N. / 2009 / Flexion-relaxation and clinical features associated with chronic low back pain: a comparison of different methods of quantifying flexion-relaxation / Clinical Journal of Pain 25:760
Balci, R. / 2003 / The effect of work-rest schedules and type of task on the discomfort and performance of VDT users / Ergonomics 46(5):455~465
Borg, E. / 2006 / A comparison between three rating scales for perceived exertion and two different work tests / Scandinavian Journal of Medicine & Science in Sports 16(1):57~69
Descarreaux, M. / 2008 / Changes in the flexion relaxation response induced by lumbar muscle fatigue / BMC Musculoskeletal Disorders 9(1):10
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