Association Between Leisure Time Physical Activity, Cardiopulmonary Fitness, Cardiovascular Risk Factors, and Cardiovascular Workload at Work in Firefighters

Yu, Clare C.W.; Au, Chun T.; Lee, Frank Y.F.; So, Raymond C.H.; Wong, John P.S.; Mak, Gary Y.K.; Chien, Eric P.; McManus, Alison M.

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자료유형: 학술저널

저자정보: Yu, Clare C.W. (Institute of Human Performance, University of Hong Kong) Au, Chun T. (Department of Paediatrics, Chinese University of Hong Kong) Lee, Frank Y.F. (Physical Training Establishment, Hong Kong Fire Services) So, Raymond C.H. (Hong Kong Sports Institute) Wong, John P.S. (Hong Kong Sports Institute) Mak, Gary Y.K. (Hong Kong Sports Institute) Chien, Eric P. (Centre for Orthopaedic Surgery) McManus, Alison M. (Institute of Human Performance, University of Hong Kong)

저널정보: 산업안전보건연구원 Safety and health at work : SH@W Safety and health at work : SH@W 제6권 제3호

발행연도: 2015.1

수록면: 192 - 199 (8page)

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Background: Overweight, obesity, and cardiovascular disease risk factors are prevalent among firefighters in some developed countries. It is unclear whether physical activity and cardiopulmonary fitness reduce cardiovascular disease risk and the cardiovascular workload at work in firefighters. The present study investigated the relationship between leisure-time physical activity, cardiopulmonary fitness, cardiovascular disease risk factors, and cardiovascular workload at work in firefighters in Hong Kong. Methods: Male firefighters (n = 387) were randomly selected from serving firefighters in Hong Kong (n = 5,370) for the assessment of cardiovascular disease risk factors (obesity, hypertension, diabetes mellitus, dyslipidemia, smoking, known cardiovascular diseases). One-third (Target Group) were randomly selected for the assessment of off-duty leisure-time physical activity using the short version of the International Physical Activity Questionnaire. Maximal oxygen uptake was assessed, as well as cardiovascular workload using heart rate monitoring for each firefighter for four "normal" 24-hour working shifts and during real-situation simulated scenarios. Results: Overall, 33.9% of the firefighters had at least two cardiovascular disease risk factors. In the Target Group, firefighters who had higher leisure-time physical activity had a lower resting heart rate and a lower average working heart rate, and spent a smaller proportion of time working at a moderate-intensity cardiovascular workload. Firefighters who had moderate aerobic fitness and high leisure-time physical activity had a lower peak working heart rate during the mountain rescue scenario compared with firefighters who had low leisure-time physical activities. Conclusion: Leisure-time physical activity conferred significant benefits during job tasks of moderate cardiovascular workload in firefighters in Hong Kong.

#ambulatory heart rate monitoring #maximal oxygen consumption #cardiovascular health

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