Time of the day of exercise impact on cardiovascular disease risk factors in adults: a systematic review and meta-analysis

To compare the effect of a single bout of morning vs. evening exercise on cardiovascular risk factors in adults. Systematic review and meta-analysis. A systematic search of studies was conducted using PubMed and Web of Science from inception to June 2022. Selected studies accomplished the following...

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Bibliographic Details
Published in:Journal of science and medicine in sport 2023-03, Vol.26 (3), p.169-179
Main Authors: Sevilla-Lorente, R., Carneiro-Barrera, A., Molina-Garcia, P., Ruiz, J.R., Amaro-Gahete, F.J.
Format: Article
Language:English
Subjects:
Adult
Adults
Bias
Blood Glucose
Blood pressure
Blood Pressure - physiology
Cardiovascular disease
Cardiovascular Diseases
Cholesterol
Circadian clocks
Circadian Rhythm - physiology
Diabetes
Exercise
Exercise - physiology
Glucose
Heart Disease Risk Factors
High density lipoprotein
Humans
Meta-analysis
Metabolism
Physical fitness
Risk Factors
Systematic review
Triglycerides
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Summary:To compare the effect of a single bout of morning vs. evening exercise on cardiovascular risk factors in adults. Systematic review and meta-analysis. A systematic search of studies was conducted using PubMed and Web of Science from inception to June 2022. Selected studies accomplished the following criteria: crossover design, acute effect of exercise, blood pressure, blood glucose, and/or blood lipids as the study's endpoint, a washout period of at least 24 h, and adults. Meta-analysis was performed by analyzing: 1) separated effect of morning and evening exercise (pre vs. post); and 2) comparison between morning and evening exercise. A total of 11 studies were included for systolic and diastolic blood pressure and 10 studies for blood glucose. Meta-analysis revealed no significant difference between morning vs. evening exercise for systolic blood pressure (g ∆ = 0.02), diastolic blood pressure (g ∆ = 0.01), or blood glucose (g ∆ = 0.15). Analysis of moderator variables (age, BMI, sex, health status, intensity and duration of exercise, and hour within the morning or evening) showed no significant morning vs. evening effect. Overall, we found no influence of the time of the day on the acute effect of exercise on blood pressure neither on blood glucose.
ISSN:1440-2440
1878-1861
DOI:10.1016/j.jsams.2023.03.004