Diurnal variation of cognitive performance and perceived difficulty in dart-throwing performance in 9–10-year-old boys

摘要: The aim of this study was to investigate variations in cognitive performance and difficulty perception 9–10-year-old boys. Fifteen healthy boys (Age = 9.8 ± 0.4 years; Height 146 5.2 cm; Body mass 34.2 2.9 kg) performed three tasks, the reaction time (RT), trail-making test, TMT (to evaluate flexibility), barrage tests selective attention [SA]). were at 07:00 17:00 h. results demonstrated that oral temperature, RT, flexibility significantly higher 17:00 h than 07:00 h. A significant main effect diurnal variation found for RT (t = 3.075, p = 0.008), SA (t = 2.43, p = 0.029), executive function (TMT, Parts B) (t = 5.86, p < 0.001; t = 4.85, p < 0.001, respectively). However, these rhythms not correlated with rhythm core temperature In conclusion perceived situations level difficulties.