NCT04366414

Breathing Protocol in Breath-hold Divers

Breathing Protocol on Oxygen Saturation Recovery After a Dynamic Apnoea in Breath-hold Divers: a Single-blind, Randomized Clinical Trial

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 46 (estimated)
• Sponsor: Centro Universitario La Salle · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Accepted

Summary

The aim of this randomized controlled trial 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 perform an experimental breathing protocol (NR-HB), or an usual training using their usual breathing (UB) protocol.

Detailed description

It is a multi-center study. 2 different Spanish Freedivers Centres are included in the study (Madrid and Zaragoza). Divers were randomly assigned to receive an experimental training (NR-HB) or to be included in the Control Group (UB). The trial included two study visits. Each exercise training program will be applied sessions per week during 4 weeks. Participants received baseline assessments at the beginning of any intervention, and post-intervention assessments at the end of the fourth week.

Conditions

• Exercise Training
• Apnea
• Breathholding
• Breathing Exercises

Interventions

Type	Name	Description
OTHER	hook breathing removing nose-clip	Participants will perform 3 days per week of usual training, involving intense exercise 8 submaximes-dynamic apnoeas with 3-minute recovery between each one per session, and continuous training of free style swimming at moderate effort over 30 minutes, including warm-up, recovery between intervals and cool down. The experimental breathing protocol consisted on to remove nose-clip previous to surface and then perform hook breathing during 20 seconds.
OTHER	usual breathing (UB)	Participants will perform 3 days per week of usual training, involving intense exercise 8 submaximes-dynamic apnoeas with 3-minute recovery between each one per session, and continuous training of free style swimming at moderate effort over 30 minutes, including warm-up, recovery between intervals and cool down.

Timeline

• Start date: 2020-10-01
• Primary completion: 2020-10-01
• Completion: 2020-12-14
• First posted: 2020-04-28
• Last updated: 2020-04-28

Locations

1 site across 1 country: Spain