Trial reportObesity (Silver Spring, Md.)2023
The efficacy of morning versus evening exercise for weight loss: A randomized controlled trial.
Trial report in Obesity (Silver Spring, Md.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 4 of them syntheses that pooled it.
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
21 citing papers in PubMed, 4 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Influence of Morning and Afternoon Exercise on Body Composition and Metabolic Health: A Systematic Review and Meta-Analysis.Sports medicine - open · 2026Pooled it
- Effects of evening exercise on anthropometric indices, metabolic profiles, and sleep health: a systematic review and meta-analysis.Sleep & breathing = Schlaf & Atmung · 2025Pooled it
- Metabolic Adaptations to Morning Versus Afternoon Training: A Systematic Review and Meta-analysis.Sports medicine (Auckland, N.Z.) · 2023Pooled it
- Best Time of Day for Strength and Endurance Training to Improve Health and Performance? A Systematic Review with Meta-analysis.Sports medicine - open · 2023Pooled it
- Effect of physical activity on changes in weight and aerobic capacity during an 18-month behavioral weight loss intervention.The international journal of behavioral nutrition and physical activity · 2025Trial
- Who do we follow online? An experimental study on source clarity and social proximity in digital health communication.Frontiers in public health · 2025Trial
- Efficacy of morning versus afternoon aerobic exercise training on reducing metabolic syndrome components: A randomized controlled trial.The Journal of physiology · 2024Trial
- Evaluating the impact of individuals' morningness-eveningness on the effectiveness of a habit-formation intervention for a simple and a complex behavior.Journal of behavioral medicine · 2024Trial
- How do previously inactive individuals restructure their time to 'fit in' morning or evening exercise: a randomized controlled trial.Journal of behavioral medicine · 2023Trial
- The efficacy of morning versus evening exercise for weight loss: A randomized controlled trial.Obesity (Silver Spring, Md.) · 2023Trial
- The impact of physical activity and exercise timing on metabolic health among individuals at high risk of type 2 diabetes.Diabetologia · 2026Review
- Optimizing timing of exercise to improve metabolic outcomes in obesity and type 2 diabetes.Npj biological timing and sleep · 2026Review
- The effect of timing of physical exercise on glycemia: a systematic review and meta-analysis of human intervention studies.Journal of diabetes and metabolic disorders · 2026Review
- Exercise Timing in Sport: Molecular and Physiological Mechanisms Linking Performance, Recovery, and Biological Cost.International journal of molecular sciences · 2026Review
- Article
- Exploring Strategies to Promote Exercise as a Viable Obesity and Chronic Disease Treatment.Nutrients · 2025Review
- Advancing Chrononutrition for Cardiometabolic Health: A 2023 National Heart, Lung, and Blood Institute Workshop Report.Journal of the American Heart Association · 2025Review
- Associations between the timing of 24 h physical activity and diabetes mellitus: results from a nationally representative sample of the US population.Diabetologia · 2025Article
- Comparative effectiveness of morning and evening aerobic exercise on weight loss and physical fitness in Chinese college students with overweight and obesity.BMC sports science, medicine & rehabilitation · 2025Article
- Unraveling the multifaceted benefits of physical exercise: a comprehensive review of body composition, metabolic regulation, and systemic health.Frontiers in nutrition · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe aim of this study was to investigate the influence of morning versus evening exercise on weight loss, cardiometabolic health, and components of energy balance.
methodsA total of 100 inactive adults with overweight or obesity were randomized to morning exercise (AMEx; 06:00-09:00), evening exercise (PMEx; 16:00-19:00), or wait-list control (CON). AMEx and PMEx were prescribed 250 min·wk
resultsAMEx and PMEx lost weight during the intervention (mean [SD], AMEx, -2.7 [2.5] kg, p < 0.001; PMEx, -3.1 [3.4] kg, p < 0.001). V̇O
conclusionsAdults with overweight and obesity experience modest weight loss in response to an exercise program, but there does not appear to be an optimal time to exercise.
Indexed as
Identifiers
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.