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Work cycle durations decreased with increases in both load level and repetition rate. Fatigue was observed more quickly with increasing time on shifts and during night shifts compared with day shifts. Work schedule effects were most apparent at lighter workloads, with minimal differences at higher workloads. The highest fatigue levels were observed during 12-h night shifts, with similar levels reached by the end of both the week of 8-h night shifts and the week of 12-h day shifts. Overall durations were 20%\u201330% shorter than in previous short-term studies, which was likely a result of the more realistic work schedules used in this study. Results from this study could be applied to the design of work-rest schedules for manual tasks involving the upper extremities. <\/jats:p>","DOI":"10.1518\/001872098779480523","type":"journal-article","created":{"date-parts":[[2007,1,13]],"date-time":"2007-01-13T15:25:31Z","timestamp":1168701931000},"page":"150-158","source":"Crossref","is-referenced-by-count":28,"title":["Work Schedule and Task Factors in Upper-Extremity Fatigue"],"prefix":"10.1177","volume":"40","author":[{"given":"Roger R.","family":"Rosa","sequence":"first","affiliation":[{"name":"National Institute for Occupational Safety and Health, Cincinnati, Ohio"}]},{"given":"Michael H.","family":"Bonnet","sequence":"additional","affiliation":[{"name":"Department of Veterans Affairs Medical Center, Dayton, Ohio"}]},{"given":"Libby L.","family":"Cole","sequence":"additional","affiliation":[{"name":"National Institute for Occupational Safety and Health, Cincinnati, Ohio"}]}],"member":"179","published-online":{"date-parts":[[1998,3,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.5271\/sjweh.2301"},{"key":"atypb2","unstructured":"Ayoub, M. 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