Kaikkonen Piia, Lindholm Harri, Lusa Sirpa
Tampere Research Center of Sports Medicine, Tampere (Dr Kaikkonen); Nokia Technologies, Espoo (Dr Lindholm); and Finnish Institute of Occupational Health, Tampere, Finland (Dr Lusa).
J Occup Environ Med. 2017 Jan;59(1):41-46. doi: 10.1097/JOM.0000000000000912.
The aim of this study was to describe physiological load and psychological stress of Finnish firefighters during a 24-hour work shift.
R-R intervals were recorded during 24-hour work shifts. Short-time Fourier transform was used to analyze heart rate variability during shifts.
HRmean, HRpeak, and square root of the mean of the sum of the squares of the differences between adjacent R-to-R peak intervals of the 24-hour shift was 73 ± 7 bpm (38 ± 4% of HRmax), 156 ± 16 bpm (82 ± 8% of HRmax), and 42 ± 14 ms. Mean VO2 was 11 ± 2 (% of VO2max) and VO2peak 72 ± 11 (% of VO2max).
Physiological load and psychological stress were temporarily high, even in young, fit firefighters. As the relative work load may increase and recovery processes slow down among aging employees, fatigue may occur unless work arrangements are well-designed.
本研究旨在描述芬兰消防员在24小时轮班期间的生理负荷和心理压力。
在24小时轮班期间记录R-R间期。采用短时傅里叶变换分析轮班期间的心率变异性。
24小时轮班期间的平均心率（HRmean）、心率峰值（HRpeak）以及相邻R波峰间期差值平方和均值的平方根为73±7次/分钟（占最大心率的38±4%）、156±16次/分钟（占最大心率的82±8%）和42±14毫秒。平均摄氧量（VO2）为11±2（占最大摄氧量的百分比），摄氧量峰值（VO2peak）为72±11（占最大摄氧量的百分比）。
即使是年轻、健康的消防员，其生理负荷和心理压力也会暂时升高。随着老年员工相对工作负荷可能增加且恢复过程减慢，除非工作安排设计合理，否则可能会出现疲劳。
