Related Experiment Video
Updated: May 26, 2025
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Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
Published on: April 7, 2020
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Circadian Rhythms, Regular Exercise, and Cognitive Performance in Morning-Trained Dancers
Mariana Marchesano1, Alejandra Carboni2, Bettina Tassino1,3
1Grupo Cronobiología, Comisión Sectorial de Investigación Científica, Universidad de la República, Montevideo 11400, Uruguay.
Clocks & Sleep
|February 21, 2025
Summary
Morning training may improve cognitive function for dancers with late chronotypes. Regular exercise can counteract the negative effects of circadian rhythms on cognitive performance, especially during demanding morning schedules.
Area of Science:
- Chronobiology
- Cognitive Neuroscience
- Sports Science
Background:
- Circadian rhythms and chronotype significantly impact daily cognitive performance.
- Late chronotypes often experience cognitive deficits during morning hours.
- Moderate-intensity exercise is known to enhance cognitive functions.
Purpose of the Study:
- To investigate the combined effects of circadian rhythms and morning exercise on cognitive performance.
- To assess cognitive function in late-chronotype dance students with demanding morning schedules.
- To explore the relationship between sleep, physical activity, and cognitive outcomes.
Main Methods:
- Utilized actigraphy and questionnaires to assess sleep and physical activity in 22 dance students.
- Administered psychomotor vigilance task (PVT) and Stroop task before and after morning training.
- Analyzed correlations between chronotype, exercise duration, sleep patterns, and cognitive task performance.
Main Results:
- Cognitive performance (reaction times) was lower in the early morning compared to noon.
- Weekend sleep duration correlated positively with PVT performance pre-training.
- Circadian phase negatively correlated with Stroop performance post-training; longer moderate-intensity exercise improved Stroop performance.
Conclusions:
- Regular morning training may mitigate cognitive impairments in late-chronotype dancers.
- Exercise appears to buffer the negative impact of circadian misalignment on cognitive function.
- Findings highlight the importance of exercise timing for cognitive performance in athletes with specific chronotypes.
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