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Long-term regular exercise and intraocular pressure: the Hisayama Study
Kohta Fujiwara1,2, Miho Yasuda3, Jun Hata4,5,6
1Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. k-fuji@eye.med.kyushu-u.ac.jp.
Summary
Regular exercise, including increased frequency and duration, is linked to lower intraocular pressure over five years in Japanese adults. This finding highlights exercise as a potential factor in managing eye pressure.
Area of Science:
- Ophthalmology
- Preventive Medicine
- Public Health
Background:
- Intraocular pressure (IOP) is a key risk factor for glaucoma.
- Lifestyle factors, including physical activity, may influence IOP.
- Long-term effects of exercise on IOP in general populations require further investigation.
Purpose of the Study:
- To examine the association between long-term regular exercise (frequency and duration) and 5-year changes in intraocular pressure.
- To assess the impact of exercise habits on intraocular pressure in a general Japanese population.
Main Methods:
- Population-based cohort study involving 1871 Japanese adults (≥40 years) with baseline and 5-year follow-up eye examinations.
- Intraocular pressure measured using a noncontact tonometer.
- Linear regression models used to analyze associations, adjusting for age, sex, and various cardiovascular and lifestyle risk factors.
Main Results:
- Mean 5-year intraocular pressure change was -0.84 ± 1.9 mmHg.
- Increased exercise frequency (times/week) and exercise time (min/week) were significantly associated with reduced intraocular pressure (p < 0.05).
- No significant heterogeneity in results across subgroups with or without confounding risk factors.
Conclusions:
- Higher levels of exercise frequency and duration are independently associated with lower intraocular pressure.
- Regular physical activity may play a role in the long-term management of intraocular pressure.
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