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The effects of a 120-minute nap on sleepiness, fatigue, and performance during 16-hour night shifts: A pilot study
How a 2-hour nap affects sleepiness, tiredness, and work performance during 16-hour night shifts
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Abstract
Following a 120-minute nap, fatigue increased and performance decreased across all nap conditions.
- Subjective assessments showed increased sleepiness and fatigue immediately after napping.
- Performance on a mental arithmetic task declined after napping, regardless of the time of the nap.
- Fatigue and heart rate variability were notably higher after the 02-NAP compared to the 22-NAP.
- In the early morning hours, the 22-NAP resulted in greater increases in sleepiness and fatigue than the 00-NAP and 02-NAP.
- The 00-NAP was associated with a significantly lower error rate in tasks compared to the 22-NAP.
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Key numbers
Lower than before nap
Decrease in Calculations After Nap
Number of calculations performed immediately after napping
Higher than after 22-NAP
Higher Fatigue After 02-NAP
Fatigue levels immediately after different nap conditions
Lower than after 22-NAP
Lower Error Ratio After 00-NAP
Ratio of errors in performance tasks in the early morning