Results (
Thai) 2:
[Copy]Copied!
After a night shift, workers usually go to bed as soon as
they get home, that is one or two hours after the end of the shift, depending on the commuting time and family commit- ments (see later for women). This means that they have to sleep during the normal rising phase of biological rhythms, which sustains wakefulness; this makes it difficult to fall asleep and sleep longer. Also, because the environmental conditions are not the most appropriate, such as disturbing noises and lighting, sleep can be further disturbed and wakefulness further extend- ed. Consequently, sleep is reduced by 2-4 h, more frequently or prematurely it is interrupted, and poorer stage 2 and REM (Rapid Eye Movement) sleep is more commonly achieved. The workers perceive this as a less restorative sleep. About one third of shift workers compensate for that by taking a nap in the af- ternoon, and they also may need to compensate because many workers voluntarily interrupt their sleep around noon to have lunch with other family members. This sleep deficit induces an increased sleepiness during the following night work period, particularly in the second part of it, which is in the early morn- ing, resulting in a higher risk of errors and accidents at work and incidents while traveling home (for example, dozing off at the wheel) [7
Being translated, please wait..
