Evidence map›Paper›PMID 30705992›Full record

ArticleContemporary clinical trials communications2019

The feasibility and acceptability of morning versus evening exercise for overweight and obese adults: A randomized controlled trial.

Paige G Brooker, Sjaan R Gomersall, Neil A King, Michael D Leveritt

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Contemporary clinical trials communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Timing of physical activity within the 24-hour day and its influence on health: a systematic review.Health promotion and chronic disease prevention in Canada : research, policy and practice · 2022
    Pooled it
  5. Effect of different types of regular exercise on physical fitness in adults with overweight or obesity: Systematic review and meta-analyses.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2021
    Pooled it
  6. Trial
  7. Trial
  8. Trial
  9. Review
  10. Article
  11. Longitudinal timing of physical activity and associated cardiometabolic and behavioral health outcomes in young adults.Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · 2025
    Article
  12. Article
  13. Consistent exercise timing as a strategy to increase physical activity: A feasibility study.Translational journal of the American College of Sports Medicine · 2023
    Article
  14. Are We Ready to Implement Circadian Hygiene Interventions and Programs?International journal of environmental research and public health · 2022
    Article
  15. Article
  16. Article
  17. Examining the Role of Exercise Timing in Weight Management: A Review.International journal of sports medicine · 2021
    Review
  18. Observational
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Paige G BrookerSchool of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, Queensland, Australia.
Sjaan R GomersallSchool of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, Queensland, Australia.
Neil A KingSchool of Exercise & Nutrition Sciences, Queensland University of Technology, Kelvin Grove, Queensland, Australia.
Michael D LeverittSchool of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, Queensland, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe time of day that people exercise could have an influence on the efficacy of exercise for weight loss, via differences in adherence and/or physiological adaptations. However, there is currently no evidence to support an optimal time of day for exercise to maximise efficacy. PURPOSE: To examine the feasibility and acceptability of prescribed morning and evening exercise.

methodsTwenty inactive, overweight adults aged 18-60 years were recruited for a 12-week intervention and randomized to one of three groups using a 2:2:1 random allocation ratio: i) morning exercise (AM; n = 9); ii) evening exercise (PM; n = 7); or iii) waitlist control (CON; n = 4). Exercise groups were prescribed self-paced walking or running on a treadmill to achieve a weekly total of 250 min. Feasibility and acceptability data were collected, and physiological and behavioural outcomes associated with energy balance were measured at baseline, mid- and post-intervention.

resultsAttrition was low (n = 2 dropped out), with high measurement completion rates (>80%). The intervention groups had high adherence rates to exercise sessions (94% and 87% for the AM and PM groups, respectively). No adverse events resulting from the intervention were reported. Both intervention groups displayed improvements to their cardiometabolic risk profile; cardiorespiratory fitness improved by 5.2 ± 4.7, and 4.6 ± 4.5 mL kg

conclusionThis feasibility study provides evidence that morning and evening exercise interventions are feasible, and also provides justification for a large-scale randomized controlled trial.

trial registrationThis trial is registered with the Australian New Zealand Clinical Trials Registry (ACTRN12616000457448p, 7/4/2016).

Indexed as

3-FU, 3-month follow-up6-FU, 6-month follow-upAM, morning exerciseBL, baselineBMI, body mass indexCON, controlDXA, dual x-ray absorptiometryEnergy balanceExerciseFeasibilityLFPQ, Leeds food preference questionnaireMARCA, Multimedia activity recall for children and adultsMEQ, morningness-eveningness questionnaireMVPA, moderate-vigorous physical activityPAL, physical activity levelPM, evening exercisePSQI, Pittsburgh sleep quality indexRandomized controlled trialRMR, resting metabolic rateRPE, ratings of perceived exertionTFEQ, three-factor eating questionnaireTime of dayVAS, visual analogue scaleVO2peak, peak oxygen uptake

Identifiers

PMID30705992
PMCPMC6348200

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Registered trials

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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.