• Brennan J Thompson, Matt S Stock, Victoria K Banuelas, and Chibuzo C Akalonu.
• Neuromuscular Research Laboratory, Kinesiology and Health Sciences Department, Utah State University, Logan (Dr Thompson); Applied Physiology Laboratory, Department of Health Professions, University of Central Florida, Orlando (Dr Stock); and Human Performance Laboratory, Department of Kinesiology & Sport Management, Texas Tech University, Lubbock (Banuelas, Akalonu).
• J. Occup. Environ. Med. 2016 Jul 1; 58 (7): 737-43.

ObjectiveThe aim of this study was to determine the impact of a demanding work schedule involving long, cumulative work shifts on response time and balance-related performance outcomes and to evaluate the prevalence of musculoskeletal disorders between day and night shift working nurses.MethodsA questionnaire was used to identify the prevalence of past (12-month) and current (7-day) musculoskeletal disorders. Nurses worked three 12-hour work shifts in a 4-day period. Reaction time and balance tests were conducted before and after the work period.ResultsThe work period induced impairments for reaction time, errors on reaction time tasks, and balance performance, independent of shift type. Musculoskeletal symptom prevalence was high in workers of both work shifts.ConclusionsCompressed work shifts caused performance-based fatigue in nurses. Reaction time and balance tests may be sensitive fatigue identification markers in nurses.

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