Effects of High Intensity Interval Training (HIIT) vs. Inspiratory Muscle Training on the Recovery After a Maximal Apnea. ((HIIT))
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|ClinicalTrials.gov Identifier: NCT04084535|
Recruitment Status : Not yet recruiting
First Posted : September 10, 2019
Last Update Posted : September 12, 2019
|Condition or disease||Intervention/treatment||Phase|
|Exercise Training Respiratory Muscle Training High-Intensity Interval Training Apnea||Other: High intensity interval training Other: Inspiratory muscle training||Not Applicable|
It is a multi-center study. 3 different Spanish Freedivers Centres are included in the study (Madrid, Zaragoza, and Barcelona).
For each participant, exercise program started with one or the other program. Hence, both interventions were applied once with the participant randomly allocated to receive the same intervention. The trial included four study visits. Each exercise training program will be applied sessions per week during 4 weeks. Participants received baseline assessments at the beginning of nay intervention, and post-intervention assessments at the end of the fourth week. The wash-out period will be two weeks. After these two weeks participants switched intervention.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||13 participants|
|Intervention Model:||Crossover Assignment|
|Intervention Model Description:||Intervention Model: Crossover Assignment|
|Masking:||Single (Outcomes Assessor)|
|Official Title:||Effects of Inspiratory Muscle Training vs. High Intensity Interval Training Program on the Recovery Capacity After a Maximal Dynamic Apnea in Breath-hold Divers. A Randomized Crossover Trial|
|Estimated Study Start Date :||September 16, 2019|
|Estimated Primary Completion Date :||September 16, 2019|
|Estimated Study Completion Date :||December 2, 2019|
Active Comparator: High intensity interval training
It will apply a HIIT program for 4 weeks, with 3 sessions per week of 30 min per session, including warm-up, recovery between intervals and return to calm.
Other: High intensity interval training
Participants will perform 3 HIIT sessions per week, involving 10 min of intense exercise within a time commitment of 30 min per session, including warm-up, recovery between intervals and cool down.
Active Comparator: Inspiratory muscle training
It will apply an inspiratory muscle training for 4 weeks, with 3 sessions per week of 30 min per session, including warm-up, recovery between intervals and return to calm.
Other: Inspiratory muscle training
Participants will perform 3 inspiratory resistance training sessions per week, involving 30 min per session, including warm-up, recovery between intervals
- Oxygen Saturation recovery [ Time Frame: Before and after training intervention (after 4 weeks) ]Oxygen Saturation recovery will be record by the experimenters every 5 seconds by a handheld pulse-oximeter during the 1 min recovery time after a maximal dynamic apnea. The outcome represents the time it takes to get a 95% of saturation during these 1 minute.
- Lung function (forced spirometry) [ Time Frame: Before and after training intervention (after 4 weeks) ]The Spirometry will be perform according to American Thoracic Society criteria and was measured in litres. The maneuver will be perform 3 times and recording the best one.
- Maximum Respiratory Pressures [ Time Frame: Before and after training intervention (after 4 weeks) ]The maximum respiratory pressures (MIP and MEP) will be measure with a device. This device applies an inspiratory/expiratory load which provides a resistance. The maneuver will be perform in a sitting position. Measuring a minimum of 3 times will be perform, recording the highest value.
- Lactic acid recovery [ Time Frame: Before and after training intervention (after 4 weeks) ]The level of lactic acid in the blood will be measure by a device that used a blood lactic acid measurement that you've gotten by the finger-stick method. It will be record by the experimenters 3 times: immediately after the maximal dynamic apnea, after 3 min and after 10 min of the maximal dynamic apnea.
- Heart Rate recovery [ Time Frame: Before and after training intervention (after 4 weeks) ]Heart Rate will be record by the experimenters every 5 seconds by a handheld pulse-oximeter during the 1 min recovery time after a maximal dynamic apnea. The outcome represents how long does it take before the participant periodic Heart Rate is stabilized during these 1 minute.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04084535
|Contact: Francisco de Asís Fernández, PhD||(+34) 91 7401 980 ext firstname.lastname@example.org|