Etude de la variability de la frequence cardiaque au cours d'une course au large en voilier avec privation de sommeil Study of heart rate variability during offshore race with sleep deprivation

摘要

Introduction. - The aim of the study was to assess the effects of a 30-hour offshore race with sleep deprivation.Synthesis. - Seven male sailors volunteered to participate in the race. During this study the subjects were sleep deprived. They were tested 5 times with an orthostatic test (stand test). Responses of the autonomic nervous system were studied through heart rate spectral analysis. Results showed a greater nocturnal parasympathetic activity with no modification for the 4 other test episodes.Conclusion. - During the night, the parasympathetic activity increase was correlated with the nyctohemeral period and not with sleep deprivation associated with physical activity.