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Reductions in intraocular pressure after acute aerobic exercise: a meta-analysis
Gabrielle Roddy1, Daniel Curnier, Dave Ellemberg
1Department of Kinesiology, Laboratory of the Neuropsychology of Sport and Development, University of Montreal, Montreal, Quebec, Canada.
Summary
Aerobic exercise significantly reduces intraocular pressure (IOP), especially in sedentary individuals. However, varying study methods complicate definitive conclusions on exercise
Area of Science:
- Ophthalmology
- Exercise Physiology
- Public Health
Background:
- Elevated intraocular pressure (IOP) is a major risk factor for primary open-angle glaucoma.
- Aerobic exercise is recognized for its potential to lower IOP.
- Inconsistent experimental protocols in existing research hinder a clear understanding of exercise's effects on IOP.
Purpose of the Study:
- To analyze studies on the impact of acute aerobic exercise on intraocular pressure (IOP).
- To investigate the influence of participant characteristics, exercise intensity, and duration on IOP reduction.
- To synthesize findings from diverse research methodologies to establish a clearer effect of exercise on IOP.
Main Methods:
- Systematic literature search of PubMed, Web of Science, and Embase databases.
- Inclusion of 10 studies representing 14 independent groups based on predefined criteria.
- Application of random effects models for subgroup analyses and meta-regressions to assess influencing factors.
Main Results:
- Aerobic exercise demonstrated a significant effect on reducing IOP.
- The IOP-lowering effect was nearly twofold greater in sedentary populations compared to normally active populations.
- Exercise intensity and duration did not significantly contribute to the overall effect size or explain population differences.
Conclusions:
- A robust IOP-lowering effect of exercise is evident, particularly for sedentary individuals.
- Heterogeneity in study parameters (protocol, measurement, participant selection) limits definitive conclusions.
- Standardization of research protocols is crucial for future studies in this field.
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