Work

Impact of normobaric hyperoxia on finger vasomotor and thermoperceptual responses to local cold in normothermic and mildly hypothermic individuals

Year: 2025

Type: article

Abstract: AIM: breathing would modulate acral-skin vasoreactivity and thermosensitivity to localised cooling. METHODS: ) hand cold (8 °C water) provocation, while immersed to the chest either in 35.1 (0.4)°C (normothermic trial) or in 21.0 (0.1)°C (hypothermic trial) water. Finger temperature, circulatory and perceptual responses were monitored. RESULTS: During the normothermic trial, hyperoxia augmented the cold-induced drop in finger temperature, and attenuated the rewarming (P = 0.03). Hyperoxia also enhanced the sensation of pain (P = 0.04). During the hypothermic trial, hyperoxia did not modify finger temperature, circulatory and perceptual responses to cold (P > 0.05). CONCLUSION: In normothermia, hyperoxia aggravates finger cold-induced vasoconstriction and pain sensation. In mild hypothermia, however, any hyperoxia-evoked influence on finger vasomotion and thermonociception is overridden by the generalised vasoconstriction and thermal discomfort instigated by whole-body cooling.

Source: European Journal of Applied Physiology

DOI: 10.1007/s00421-025-05869-0

Authors: Michail E. Keramidas, Heather M. Bowes, Maaike I. Moes, Ola Eiken, Mikael Gennser

Institutions: Karolinska Institutet, UNSW Sydney, KTH Royal Institute of Technology, Swedish Armed Forces

Language: English

Topic: Thermoregulation and physiological responses

Subfield: Physiology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $2,890