Diurnal Variations of Post-exercise Parasympathetic Nervous Reactivation in Different Chronotypes.
Open accessAbstract
The purpose of this study was to investigate the diurnal variation and chronotype differences, i.e., in morning-types and evening-types, in post-exercise vagal reactivation. Twelve healthy male college students who were classified as morning-type (6) and evening-type (6), based on responses to a questionnaire, participated in this study. Postexercise vagal reactivation was assessed as the time constant of the beat-by-beat heart rate decrease for the first 30 sec after exercise (T30) at an intensity lower than the ventilatory threshold. The subjects performed 3-min cycle ergometer exercise at an intensity corresponding to 80% of the ventilatory threshold after a 1 min warm-up exercise in the morning (7:00 - 8:00) and evening (17:00 - 18:00) to obtain the T30. A significant interaction (chronotype-by-time) effect was found for T30. The morning value of the T30 in evening-type subjects was significantly larger than their evening value and the morning value in morning-type subjects. There was no significant interaction effect for heart rate and oxygen uptake during exercise. These results suggest that diurnal variation in post-exercise vagal reactivation is different between morning-type and evening-type, and post-exercise vagal reactivation in evening-type individuals is sluggish in the morning.
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Late chronotypes may have poorer recovery from morning exercise.
“Early chronotypes perform activities better during the morning hours [21] while late chronotypes may have poorer recovery from morning exercise [22].”
From Smoking, screen-based sedentary behavior, and diet associated with habitual sleep duration and chronotype: data from the UK Biobank (2016) · cites this paper as [22]
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- Authors
- Sugawara, J., Hamada, Y., Nishijima, T., & Matsuda, M.
- Affiliations
- University of Tsukuba (JP)
- ORCID
- Sugawara, Jun
- Venue
- Japanese Heart Journal
- Published
- 2001
- Volume
- 42
- Issue
- 2
- Pages
- 163-171
- ISSN
- 0021-4868 (ISSN-L)
- 1348-673X
- OpenAlex
- W1977505575
- Cited by
- 24
- References
- 13
- Citations by year
- 2026: 1 · 2024: 2 · 2023: 2 · 2021: 3 · 2020: 1 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 3 · 2012: 1
- FWCI
- 0.24
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Japanese Heart Journal (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Health Sciences › Medicine › Physiology › Physical Activity and Health
- Keywords
- chronotype, parasympathetic nervous system, diurnal variation, heart rate recovery, ventilatory threshold, cycle ergometry, oxygen consumption
- MeSH terms
- Adult, Analysis of Variance, Chronobiology Phenomena, Circadian Rhythm, Heart Rate, Humans, Male, Oxygen Consumption, Parasympathetic Nervous System, Vagus Nerve, Exercise
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