An interventional study of Land-Based Breath-Hold Training and Water-Based Breath-Hold Training in Sport Physiology and Cognitive Performance, sponsored by Istanbul Gelisim University. Not yet recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-01.
Sponsored by Istanbul Gelisim University · Not applicable, Interventional, and Basic science
This study aims to investigate the acute cognitive and physiological responses to breath-hold diving training in trained female divers. Participants will complete three separate sessions including a control session, a land-based breath-hold training session, and a water-based breath-hold training session in randomized order. Cognitive performance, mood state, heart rate responses, respiratory function, and maximal breath-hold capacity will be evaluated before and after the interventions. The study is expected to improve understanding of how acute apnea-based diving exercises influence cognitive functions and physiological adaptations under different environmental conditions.
Istanbul Gelisim University is the lead sponsor of 64 studies on the registry; 8 are open to participants now.
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Exclusion Criteria:
Participants will complete baseline cognitive, respiratory, mood, and maximal breath-hold assessments without structured breath-hold exercise.
Other: Control Session
Participants will perform land-based breath-hold exercises at 60% of individual maximal breath-hold capacity followed by post-intervention cognitive and mood assessments.
Behavioral: Land-Based Breath-Hold Training
Participants will perform water-based breath-hold exercises in a swimming pool at 60% of individual maximal breath-hold capacity followed by post-intervention cognitive and mood assessments.
Behavioral: Water-Based Breath-Hold Training
Participants will perform structured land-based breath-hold exercises consisting of repeated apnea efforts at 60% of individual maximal breath-hold capacity with standardized rest intervals.
Participants will perform structured breath-hold exercises in a swimming pool environment consisting of repeated apnea efforts at 60% of individual maximal breath-hold capacity with standardized rest intervals.
Participants will undergo baseline cognitive, respiratory, mood, and physiological assessments without structured apnea or breath-hold exercise intervention.
Working Memory Accuracy (2-Back Test)
Accuracy score obtained from the computerized 2-back cognitive task.
Time frame: Baseline and immediately after the intervention, within 5 minutes post-intervention.
Reaction Time During the 2-Back Test
Mean reaction time recorded during correct responses in the 2-back cognitive task.
Time frame: Baseline and immediately after the intervention, within 5 minutes post-intervention.
Brunel Mood Scale (BRUMS) Total Score
Total mood disturbance score assessed using the Brunel Mood Scale questionnaire.
Time frame: Baseline and immediately after the intervention, within 5 minutes post-intervention.
Maximum Breath-Hold Duration
Maximum voluntary breath-hold duration recorded during testing.
Time frame: Baseline during the control session before intervention sessions.
Resting Heart Rate
Resting heart rate measured before each session using a Polar heart rate monitor.
Time frame: Before each experimental session.
Exercise Heart Rate Response
Heart rate responses recorded every 30 seconds during the breath-hold exercise protocol.
Time frame: During the intervention session.
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: Undecided
Start is estimated for Jun 2026; primary completion for Aug 2026, 2 months later.
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This study is not yet recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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Istanbul Gelisim University