Acute intraocular pressure responses to high-intensity interval-training protocols in men and women.
We aimed (1) to test the acute impact of two high-intensity interval-training (HIIT) protocols differing in the level of effort on intraocular pressure (IOP) responses, and (2) to elucidate whether the IOP responses differ between men and women. Twenty-four physically active collegiate (12 men and 12 women) performed three protocols: low-fatigue HIIT (eight 30-m sprints with 60-s of rest), high-fatigue HIIT (eight 30-m sprints with 30-s of rest), and control (walking). IOP was taken at baseline, after sprints and recovery by rebound tonometry. Our data revealed an acute IOP reduction during both HIIT protocols compared to the control condition (effect size [ES]:0.81-1.65). The differences between both HIIT protocols were generally negligible (ES<0.30), however, the reduction of IOP was moderately higher for the low-fatigue HIIT protocol after the 7th (ES: 0.67) and 8th (ES: 0.74) sprints. Women showed a more prominent lowering effect on IOP during the control condition (ES: 0.42-1.02), and during the two first sprints of both HIIT protocols (ES: 0.54-1.03). These findings highlight that a time-efficient HIIT protocol may acutely reduce IOP levels, while low-fatigue HIIT protocol could be recommended since it induced a higher reduction on IOP than the high-fatigue HIIT protocol.
['Vera|Jesús|J|', 'Jiménez|Raimundo|R|', 'Redondo|Beatríz|B|', 'Cárdenas|David|D|', 'McKay|Bryon R|BR|', 'García-Ramos|Amador|A|http://orcid.org/0000-0003-0608-8755']
D000328:Adult D005260:Female D006339:Heart Rate D000072696:High-Intensity Interval Training D006801:Humans D007429:Intraocular Pressure D008297:Male D018763:Muscle Fatigue D010465:Perception D005082:Physical Exertion D012737:Sex Factors D013647:Task Performance and Analysis D013997:Time Factors D014065:Tonometry, Ocular D055815:Young Adult
Sprints rebound tonometry glaucoma ocular physiology