ArticleJournal of circadian rhythms2018
Circadian Effects on Performance and Effort in Collegiate Swimmers.
Article in Journal of circadian rhythms, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 41 citations in OpenAlex.
- Trial
- The Influence of Time of Day on Critical Swimming Speed in Chronotype-Screened (Neither-Type) Well-Trained Male Swimmers.Life (Basel, Switzerland) · 2026Article
- Influence of Chronotype on Cycling Performance in Simulated 20-km Time Trials-A Pilot Study.Journal of sleep research · 2026Article
- Afternoon exercise was associated with greater fat loss than morning exercise in overweight/obese adults: an exploratory study of PER3 rs228697 genotype matching.Frontiers in physiology · 2026Article
- Genetic determinants of tendon and ligament injuries in athletes: a narrative review from single variants to gene-gene interactions.Frontiers in systems biology · 2026Review
- Exploring training-sleep characteristics and bidirectional lagged relationships in Chinese recreational runners: insights from a year-long wearable monitoring study.Frontiers in physiology · 2026Article
- Time to Reset: The Interplay Between Circadian Rhythms and Redox Homeostasis in Skeletal Muscle Ageing and Systemic Health.Antioxidants (Basel, Switzerland) · 2025Review
- Comparative analysis of morning and evening training on performance and well-being in elite soccer players.Physiological reports · 2025Article
- Review
- Stable interindividual differences in modafinil's effect on vigilance during sleep deprivation.Frontiers in pharmacology · 2025Article
- Chronotype as a predictor of athletic performance in youth with mild intellectual disabilities.Frontiers in physiology · 2024Article
- It's About Time: The Circadian Network as Time-Keeper for Cognitive Functioning, Locomotor Activity and Mental Health.Frontiers in physiology · 2022Review
- The Impact of Chronotype on the Sleep and Training Responses of Elite Female Australian Footballers.Clocks & sleep · 2021Article
- Sleep quality and athletic performance according to chronotype.BMC sports science, medicine & rehabilitation · 2021Article
- Diurnal variations in the expression of core-clock genes correlate with resting muscle properties and predict fluctuations in exercise performance across the day.BMJ open sport & exercise medicine · 2021Article
- Clocking In, Working Out: Circadian Regulation of Exercise Physiology.Trends in endocrinology and metabolism: TEM · 2019Review
- Player chronotype does not affect shooting accuracy at different times of the day in a professional, male basketball team: a pilot study.Sleep science (Sao Paulo, Brazil)Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although individual athletic performance generally tends to peak in the evening, individuals who exhibit a strong diurnal preference perform better closer to their circadian peak. Time-of-day performance effects are influenced by circadian phenotype (diurnal preference and chronotype-sleep-wake patterns), homeostatic energy reserves and, potentially, genotype, yet little is known about how these factors influence physiological effort. Here, we investigate the effects of time of day, diurnal preference, chronotype, and
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.