Related Experiment Video
Updated: Sep 3, 2025

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
Published on: June 20, 2015
Intraocular Pressure Fluctuation during Aerobic Exercise at Different Exercise Intensities
Toshihiro Kawae1, Takuo Nomura2, Daisuke Iwaki3
1Department of Physical Therapy, Makuhari Human Care Faculty, Tohto University, Hibino 1-1, Mihama-ku, Chiba City 261-0021, Chiba, Japan.
High-intensity aerobic exercise significantly lowers intraocular pressure (IOP) in healthy individuals. Moderate and low intensities did not alter IOP, suggesting exercise intensity is crucial for managing eye pressure.
Area of Science:
- Ophthalmology
- Exercise Physiology
- Cardiovascular Health
Background:
- Intraocular pressure (IOP) fluctuations are critical in managing eye conditions like glaucoma and diabetic retinopathy.
- Limited research exists on how varying aerobic exercise intensities affect IOP.
Purpose of the Study:
- To investigate the impact of low, moderate, and high aerobic exercise intensities on IOP in healthy subjects.
- To determine the relationship between oxygen uptake and IOP changes during exercise.
Main Methods:
- 18 healthy males underwent submaximal cardiopulmonary exercise tests to determine maximal oxygen uptake (VO2max).
- Subjects exercised for 20 minutes at 30%, 50%, and 70% of VO2max.
- Intraocular pressure (IOP) and oxygen uptake were measured at rest and every 5 minutes during exercise.
Main Results:
- Oxygen uptake increased significantly during all exercise intensities compared to rest.
- Intraocular pressure (IOP) significantly decreased at 70% VO2max intensity during exercise compared to rest.
- A negative correlation was observed between IOP and oxygen uptake (VO2).
Conclusions:
- High-intensity aerobic exercise can lower intraocular pressure (IOP) in healthy individuals.
- Low- and moderate-intensity exercise did not significantly change IOP.
- The mechanism for IOP reduction during high-intensity exercise may differ from resting conditions.
More Related Videos
09:33Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise
Published on: December 19, 2024
07:09Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
Published on: February 20, 2017
Related Concept Videos
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Cardiac Output I:Effect of Heart Rate on Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Alterations in Blood Pressure
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...