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首页> 外文期刊>Occupational and environmental medicine >Distribution of rest days in 12 hour shift systems: impacts on health, wellbeing, and on shift alertness.
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Distribution of rest days in 12 hour shift systems: impacts on health, wellbeing, and on shift alertness.

机译：12小时轮班系统中休息日的分布：对健康，福祉和轮班警觉性的影响。

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OBJECTIVES: To investigate of the effects of distribution of rest days in 12 hour shift systems. Although several studies have examined the effects of compressing work schedules by comparing 8 and 12 hour shift systems, there is little published research examining the various forms of 12 hour shift system. METHODS: An abridged version of the standard shiftwork index which included retrospective alertness ratings was completed by a large sample of industrial shiftworkers. The respondents worked 12 hour shift systems that either did or did not incorporate breaks of > 24 hours between the blocks of day and night shifts. For the purposes of the analysis, each of these two groups were further subdivided into those who started their morning shift at 0600 and those who started at 0700. RESULTS: Systems which incorporated rest days between the day and night shifts were associated with slightly higher levels of on shift alertness, slightly lower levels of chronic fatigue, along with longer sleep durations when working night shifts and between rest days. Early changeovers were associated with shorter night sleeps between successive day shifts, but longer and less disturbed day sleeps between night shifts. These effects of changeover time were broadly in agreement with previous research findings. CONCLUSIONS: The distribution of rest days in 12 hour shift systems had only limited effects on the outcome measures, although the few modest differences that were found favoured systems which incorporated rest days between the day and night shifts. It is conceded that the design of the study may have obscured some subtle differences between the shift systems. Nevertheless, it is concluded that the impact of distribution of rest days seems to be minor relative to previously found effects of other features of shift systems--for example, shift duration.
机译：目的：研究12小时轮班系统中休息日分布的影响。尽管有几项研究通过比较8小时制和12小时制轮班制检查了压缩工作时间表的影响，但很少有发表的研究对12小时制轮班制的各种形式进行研究。方法：标准的轮班指数的简化版包括回顾性警觉等级，是由大量的工业轮班工人完成的。受访者使用的是12小时轮班系统，该系统在白天和黑夜之间的休息时间间隔是否大于24小时。为了进行分析，将这两组分别细分为从0600开始晨班的人和从0700开始晨班的人。结果：在白天和夜晚班次之间包含休息日的系统的水平稍高一些轮班警觉性，慢性疲劳程度稍低，夜班和休息日之间的睡眠时间更长。早间换班与连续两班之间的夜间睡眠时间短有关，但与两班之间的夜间睡眠时间长且干扰少有关。转换时间的这些影响与先前的研究结果基本一致。结论：12小时轮班制中休息日的分布仅对结果指标产生有限的影响，尽管发现的少量适度差异有利于在白天和夜间轮班之间纳入休息日的系统。承认研究的设计可能掩盖了变速系统之间的一些细微差别。但是，可以得出结论，相对于先前发现的轮班系统其他功能（例如轮班时间）的影响，休息日分布的影响似乎较小。

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