Application of Actigraphy on Shift Workers for Sleep Quality

The subjects of this study are based on 36 manufacturing operators working on a shift system, there are respectively 12 operators in the day shift, middle shift and night shift being examined. The study uses actigraphy to measure the quality of sleep of the employees under different shift schedules. The results of the study are as follows. On the measurement aspect of quality of sleep on each respective shift, the sleep latency on the night shift is relatively longer as compared to those in the day shift (p < 0.05). The instances of sleep barriers on the night shift are relatively more as compared to those in the day shift (p < 0.05). The total sleep time on the night shift is relatively longer as compared to those in the day shift (p < 0.05). The study discovered that sleep latency is the longest for the middle shift, and differs with the conclusion of past literature stating that employees working in the night shift needed a relatively longer time to fall asleep. The total sleep time for employees working in the night shift is the shortest.