The role of a short post-lunch nap in improving cognitive, motor, and sprint performance in participants with partial sleep deprivation

J Sports Sci. 2007 Dec;25(14):1557-66. doi: 10.1080/02640410701244983.


The aim of this study was to determine the effects of a post-lunch nap on subjective alertness and performance following partial sleep loss. Ten healthy males (mean age 23.3 years, s = 3.4) either napped or sat quietly from 13:00 to 13:30 h after a night of shortened sleep (sleep 23:00-03:00 h only). Thirty minutes after the afternoon nap or control (no-nap) condition, alertness, short-term memory, intra-aural temperature, heart rate, choice reaction time, grip strength, and times for 2-m and 20-m sprints were recorded. The afternoon nap lowered heart rate and intra-aural temperature. Alertness, sleepiness, short-term memory, and accuracy at the 8-choice reaction time test were improved by napping (P < 0.05), but mean reaction times and grip strength were not affected (P > 0.05). Sprint times were improved. Mean time for the 2-m sprints fell from 1.060 s (s(x) = 0.018) to 1.019 s (s(x) = 0.019) (P = 0.031 paired t-test); mean time for the 20-m sprints fell from 3.971 s (s(x) = 0.054) to 3.878 s (s(x) = 0.047) (P = 0.013). These results indicate that a post-lunch nap improves alertness and aspects of mental and physical performance following partial sleep loss, and have implications for athletes with restricted sleep during training or before competition.

MeSH terms

  • Adult
  • Athletic Performance*
  • Cognition / physiology*
  • Fatigue*
  • Health Surveys
  • Humans
  • Male
  • Motor Skills / physiology*
  • Prospective Studies
  • Psychological Tests
  • Psychometrics
  • Reaction Time
  • Sleep / physiology*
  • Sleep Deprivation*
  • Sports / psychology*
  • Surveys and Questionnaires
  • Task Performance and Analysis
  • Time Factors
  • Wakefulness