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Abstract #127674 Published in IGR 25-3

Intraocular pressure responses during maximal and submaximal handgrip strength tasks in primary open-angle glaucoma patients and healthy individuals

BACKGROUND: This study aimed to compare intraocular pressure (IOP) responses during isometric handgrip strength tasks between primary open-angle glaucoma patients and healthy individuals. METHODS: Forty older adults participated: 21 glaucoma patients and 19 controls. Participants randomly performed four trials at two intensities, maximal and submaximal (at 50% of self-perceived maximal effort), with two trials per hand (one for the left eye and one for the right eye). IOP was measured immediately before exercise, during exercise, and 5 seconds post-recovery. A four-factor mixed ANOVA was used to analyze IOP responses, with task intensity and time of measurement as within-subject factors, and group (glaucoma vs. control) and sex as the between-subjects factors. RESULTS: IOP responses were comparable between glaucoma patients and healthy individuals, as the main effect of group ( = 0.117) and its interactions did not reach statistical significance. The main effect of time reached statistical significance ( = 0.016) due to greater IOP values during the task (17.3 ± 3.7 mmHg) compared to pre-exercise (16.3 ± 3.2 mmHg: < 0.001), but post-exercise IOP (16.9 ± 4.1 mmHg) was not significantly different from pre-exercise ( = 0.334) or during exercise ( = 0.727). Greater IOP values were observed for the maximal task compared to the submaximal task ( = 0.001), with no differences between men and women ( = 0.699). CONCLUSION: Submaximal isometric strength training is a safe option for glaucoma patients treated with hypotensive eye drops.

Department of Physical Education and Sport, Faculty of Sport Sciences, Universidad de Granada, Granada, Andalucía, Spain.

Classification:

15 Miscellaneous

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