SLEEP – EARLY MORNING EXERCISE CAN INTERFERE WITH FULL NIGHT SLEEP


1 RESEARCH ARTICLE


SLEEP OR SWIM? EARLY-MORNING TRAINING SEVERELY RESTRICTS THE AMOUNT SLEEP Р2012


Charli Sargenta*, Shona Halsonb & Gregory Daniel Roacha
DESIGN
7 swimmers from the Australian Institute of Sport participated in 14 days of high-intensity training in preparation for the 2008 Olympics
– During these 14 days, participants had 12 training days, each starting with a session at 06:00 h, and 2 rest days
– On nights that preceded training days, participants went to bed at 22:05 h (s=00:52), arose at 05:48 h (s=00:24) and obtained 5.4 h (s=1.3) of sleep
– On nights that preceded rest days, participants went to bed at 00:32 h (s=01:29), arose at 09:47 h (s=01:47) and obtained 7.1 h (s=1.2) of sleep
RESULTS
– On nights prior to training days, bedtimes and get-up times were significantly earlier, time spent in bed was significantly shorter and the amount of sleep obtained was significantly less, than on nights prior to rest days
CONCLUSIONS
– These results indicate that early-morning training sessions severely restrict the amount of sleep obtained by elite athletes
– Given that chronic sleep restriction of <6 h per night can impair psychological and physiological functioning, it’s possible early-morning schedules limit the effectiveness of training


 

Comments are closed.