1 RESEARCH ARTICLE
Waterhouse J1, Atkinson G, Edwards B, Reilly T.
– 10 males (mean age 23.3 yrs) 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)
– 30 min after the nap alertness, short-term memory, intra-aural temperature, heart rate, choice reaction time, grip strength, and times for 2-m and 20m sprints were recorded
1. The afternoon nap lowered heart rate and intra-aural temperature
2. Alertness, sleepiness, short-term memory, and accuracy at the 8-choice reaction time test were improved by napping, but mean reaction times and grip strength were not affected
3. Sprint times were improved. Mean time for the 20m sprints fell from 1.060 s; mean time for the 20m sprints fell from 3.971 s to 3.878 s