Toward a hyperventilation detection system in freediving: a proof of concept using force sensor technology.

ABSTRACT:

Background and aim

Hyperventilation before breath-hold diving (freediving) is widely accepted as a risk factor for hypoxic syncope or blackout (BO), but there is no practical way to address it before dives. This study explores the feasibility of using a force sensor to predict end-tidal carbon dioxide (P _ETCO₂) to assess hyperventilation in freedivers.

Methods and results

Twenty-one freedivers volunteered to participate during two national competitions. The divers were instructed to breathe normally and perform three dry apneas of 1, 2, and 3-min duration at 2-min intervals in a sitting position. Before and after the apneas, P _ETCO₂ was recorded. The signal from the force sensor, attached to a chest belt, was used to

SUBMITTER: Pernett F 

PROVIDER: S-EPMC11743614 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature