Effects of High Intensity Interval Training (HIIT) vs. Inspiratory Muscle Training on the Recovery After a Maximal Apnea.

Centro Universitario La Salle16 enrolled

Overview

The aim of this randomized cross-over controlled study was to assess the effects of an 4-week exercise program on the recovery capacity after a voluntary maximal apnea. Participants will be randomly allocated to receive either a high intensity interval training (HIIT), or an inspiratory muscle training (IMT) using an inspiratory resistance device.

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

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Exercise Training Respiratory Muscle Training

Interventions

High intensity interval trainingOTHER

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.

Inspiratory muscle trainingOTHER

Participants will perform 3 inspiratory resistance training sessions per week, involving 30 min per session, including warm-up, recovery between intervals

Eligibility

Sex: ALLMin age: 18 YearsMax age: 60 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Absence of pain or illness * No changes in cognitive ability * Over 18 years old. * Member of the Spanish Federation of Underwater Activities. * Positive medical examination that allows the diver to practice voluntary apnea. Exclusion Criteria: * People with systemic diseases, tumors, infections, pacemakers, history of epilepsy, hydrophobia, pregnancy women, pharmacological treatment. * To be participating in other physical activities during the experimental research

Outcomes

Primary Outcomes

Oxygen Saturation recovery

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.