MORNING VERSUS AFTERNOON GYMNASTIC TIME AND DIURNAL AND SEASONAL CHANGES IN PSYCHOPHYSIOLOGICAL VARIABLES OF SCHOOL CHILDREN

摘要: The aims of this study were to document time-related (morning versus afternoon) effects physical activities (gymnastics) on a set physiological and psychological variables in school children, including diurnal changes. For the study, 61 boys 69 girls, 6 11 years age, volunteered. They considered healthy according routine clinical criteria. synchronized with activity from around 07:00 21:00 nocturnal rest, time year being taken into account. Tests performed at during 4 weeks 4.5 days fixed clock hours: 09:00, 11:00, 14:00, 16:00. Gym was randomized regard week order season. Four different classes (39 38 girls) involved psychophysiological tests, two (22 31 collected saliva samples for morning free cortisol determination. Both t-test three-factor analysis variance (ANOVA) used statistical analyses. Better performances obtained June than mid-winter reference letter cancellation random number addition tests. As group phenomenon, (09:00 10:00) afternoon (14:00 15:00) gym not an influential condition sleep duration, oral temperature, self-rated fatigue drowsiness, cancellation, or salivary cortisol. However, gym-time-related differences observed younger subjects (e.g., 6-7 years) test. Such variability among subgroups suggests that interindividual are likely exist children manipulation environmental factors. In addition, itself (without consideration) may be factor patterns some test).