The aim of the study was to investigate the effects of a partial sleep deprivation
on a subsequent supramaximal exercise evaluated from the 30 second Wingate test, and
on the following recovery. To take into account the active muscle mass, the Wingate
test was performed against a constant braking force related to the data of a force-velocity
test conducted on a Monark cycle ergometer (Model 814 E with weights) one week before
the experimental test. Eight highly trained athletes were enroled for this study.
The changes in ventilatory and metabolic (responses were analyzed during and upon
completion of physical 30 second exercise, taking place after two nights, in other
words, after a reference night and after a night with reduced sleep. Partial sleep
deprivation was obtained by delaying bedtime until 3 a.m. The 30 second Wingate test
was performed between 9 a.m. and noon the following days, using a Monark ergometer
(Model 814 E). The analyses of change scores disclosed that there were no main significant
effects for measures of ventilation, lactates and pHv levels under the two experimental
conditions. The peak power, the mean power output and the peak velocity recorded after
partial sleep deprivation were not modified in comparison with the values obtained
after the reference night. These findings suggest that acute sleep loss did not contribute
to alterations in supramaximal exercise.
Key words
Partial sleep loss - Wingate test - recovery - lactate - ventilation - pHv
