• 대한인간공학회지
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• 제33권2호
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• pp.167-174
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• 2014

Objective: This research focuses on the working environment of office workers and aims to propose an ideal seating posture and chair design. Background: Generally, office workers having to seat in a fixed posture for long periods of time tend to suffer from an increased rate of musculoskeletal disorders. Method: The measurement and survey of 123 office workers on their working conditions and literature survey will lead to a suggestion of an ideal seating posture and workstation design theory. Results: Work environment satisfaction appeared low for chair and desks. Work-related pain over the last year was experienced among 47.2% of the respondents in shoulder (34.2%), neck (30.9%). Observation of working posture revealed that only 27.6% of workers utilize backrest during work. Conclusion: Office work embodies many situations where risks of musculoskeletal disorders may be high. Thus, the seated workplace must be set up to allow proper seating posture for workers. Application: The results of this study can be applied as baseline data for preventing musculoskeletal disorders of office workers.

• 한국콘텐츠학회논문지
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• 제13권9호
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• pp.270-280
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• 2013

본 연구의 목적은 선천성 근육사경과 산모의 직업적 활동 간의 관련성을 알아보는 것이다. 2006년부터 2011년 4월까지 수원 "C" 병원 재활의학과를 내원한 선천성 근육사경아동의 산모 89명을 대상으로 실시하였다. 결과는 첫째, 연구대상자의 일반적 특성을 보면, 출산 평균연령은 30.09세, 교육수준은 대졸이상이 많았으며, 초산이 82.0%로 나타났으며, 자연분만, 제왕절개, 흡입분만 순이었고, 분만 시 둔위여부는 20.2%로 나타났으며, 첫째 아동이 사경인 경우가 82.0%로 나타났고, 둘째, 연구대상자의 직업적 특성에서 직장생활을 한 산모가 59.6%이고 전문가 및 관련종사자가 45.3%를 차지하였고, 직장생활을 임신 3기까지 한 산모가 75.5%로 나타났고, 주로 서서 일하는 자세보다 앉아서 일하는 자세로 앉아서 일하는 시간이 7시간 이상이 54.7%로 나타났으며, 하루 평균 근무시간은 8.75시간으로 나타났고, 셋째, 연구대상자의 직무스트레스는 하위 25%이하 수준으로 나타났으며, 하위 요인별 정도에선 관계갈등영역에서만 상위 50%이상으로 나타났다. 넷째, 연구대상자의 직무스트레스와 직업적 업무 특성간의 상관관계를 보면, 스트레스(100점 환산)와 직무스트레스의 직무요구, 관계갈등, 보상 부적절, 직장문화와 양의 상관관계가 높게 나타났으며, 직장문화와 보상 부적절간에도 양의 상관관계가 높게 나타났다. 직업적 업무 중 하루 평균 근무시간과 평균 일주일 근무시간과 양의 상관관계가 높게 나타났다.

• 대한인간공학회지
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• 제24권2호
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• pp.65-70
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• 2005

Evaluation of repetitiveness for upper extremity intensive tasks is essential to determine the level of risk for upper extremity musculoskeletal disorders at the workplace. However, experimental data available to establish the acceptable levels of repetitiveness for various postures and forces is lacking. The present study examined the maximum acceptable frequencies(MAFs; motions/min.) of shoulder, elbow, wrist, and index finger motions at different forces(1kgf and 4kgf for shoulder, elbow, and wrist; 0.25kgf and 1 kgf for index finger) in sitting. Seventeen right-handed males in 20s without having any history musculoskeletal disorders participated in the MAF experiment. The participants determined their MAFs for the upper extremity motions by using the self-adjustment method and their work pulse(increase in heart rate; beats/min.) and rating of perceived exertion(RPE) were measured when working at MAF. The MAFs of elbow, wrist, and index finger motions for each force level were about 2, 3, and 6 times the corresponding MAF(9 at the high force and 24 at the low force) of shoulder motion and the MAFs at the low force increased about 2 times those at the high force. The work pulses of elbow, wrist, and index finger motions for each force level were 70%, 50%, and 30% of the corresponding work pulse(17 at the high force and 12 at the low force) of shoulder motion and the work pulses at the low force were about 70 % of those at the high force. Lastly, the RPEs of the upper extremity regions were about level 3(moderate) or below.