Diving in the Arctic: Cold Water Immersion's Effects on Heart Rate Variability in Navy Divers.

ABSTRACT:

Introduction

Diving close to the Arctic circle means diving in cold water regardless of the time of year. The human body reacts to cold through autonomous nervous system (ANS)-mediated thermoregulatory mechanisms. Diving also induces ANS responses as a result of the diving reflex.

Materials and methods

In order to study ANS responses during diving in Arctic water temperatures, we retrospectively analyzed repeated 5-min heart rate variability (HRV) measures and the mean body temperature from dives at regular intervals using naval diving equipment measurement tests in 0°C water. Three divers performed seven dives without physical activity (81-91 min), and two divers performed four dives with physical activity after 10 min of diving (0-10 min HRV recordings were included in the

SUBMITTER: Lundell RV 

PROVIDER: S-EPMC7005786 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature