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Changes in intraocular pressure during acute exercise

R C Krejci, R B Gordon, C T Moran

American Journal of Optometry and Physiological Optics

|February 1, 1981

Summary

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Vigorous exercise significantly decreased intraocular pressure during and after exertion. However, this study found no significant correlation between heart rate and intraocular pressure changes during exercise.

Area of Science:

Ophthalmology
Exercise Physiology
Cardiovascular Health

Background:

Previous research on exercise and intraocular pressure (IOP) primarily used pre- and post-exercise measurements.
A gap exists in understanding the continuous IOP response during physical activity.

Purpose of the Study:

To continuously monitor intraocular pressure (IOP) during submaximal exercise.
To correlate real-time IOP changes with heart rate fluctuations during exercise and recovery.

Main Methods:

17 adult subjects underwent a submaximal bicycle ergometer test (Astrand-Rhyming protocol).
An individualized four-stage workload was designed to reach 85% of predicted maximum heart rate.
Intraocular pressure was measured using a non-contact tonometer at each stage and during 15 minutes of recovery.

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Main Results:

A statistically significant decrease in intraocular pressure (p < 0.05) was observed at the end of the fourth exercise stage and during 1, 5, and 10 minutes of recovery.
No significant correlation was found between changes in heart rate and intraocular pressure throughout the exercise and recovery periods.

Conclusions:

Vigorous exercise leads to a significant reduction in intraocular pressure during and immediately following the activity.
Heart rate monitoring alone is insufficient to predict intraocular pressure changes during exercise.