This study investigated the influence of chronotype on motor behavior in a manual dexterity task performed at different times of the day. Sixteen healthy adults of each chronotype (morning, evening, and neither), as measured by the Morningness–Eveningness Questionnaire, practiced both conditions of the Grooved Pegboard Test either in the morning or in the afternoon to early evening. The “neither” chronotype (65.12 ± 7.46) was outperformed (ps ≤ .03) by both the morning (56.09 ± 7.21) and evening (58.94 ± 7.53) chronotypes when the task had higher cognitive and motor demand but was not outperformed in the task with lower demand (morning = 18.46 ± 2.11; evening = 19.34 ± 2.79; neither = 21.47 ± 2.54; p > .05). No difference between the morning and evening chronotypes was found at the different times of the day (ps > .05), suggesting that a manual dexterity task is not sufficiently demanding to be influenced by chronotype.

本研究调查了在一天中不同时间执行的手动灵巧性任务中，睡眠类型对运动行为的影响。根据晨间 - 夜间问卷的测量，每种睡眠类型（早上、晚上和两者都不是）的 16 名健康成年人在早上或下午到傍晚练习了凹槽钉板测试的两种条件。当任务具有更高的认知和运动需求时，“两者”时间型 (65.12 ± 7.46) 的表现均优于 ( p s ≤ .03) 早晨 (56.09 ± 7.21) 和晚上 (58.94 ± 7.53)需求较低的任务（早上 = 18.46 ± 2.11；晚上 = 19.34 ± 2.79；两者都不 = 21.47 ± 2.54；p > .05）。在一天中的不同时间没有发现早晚时间型之间的差异（p s > .05），这表明手动灵巧性任务的要求不够高，不会受到时间型的影响。