A comparison of rectal, oesophageal and gastro-intestinal tract temperatures during moderate-intensity cycling in temperate and hot conditions

Mündel, Toby, Carter, James M., Wilkinson, David M. and Jones, David A. (2016) A comparison of rectal, oesophageal and gastro-intestinal tract temperatures during moderate-intensity cycling in temperate and hot conditions. Clinical Physiology and Functional Imaging, 36 (1). pp. 11-16. ISSN 1475-0961

Full text not available from this repository.

Abstract

The purpose of this study was to compare three of the most commonly used methods of core temperature (Tcore) measurement during cycling under different environmental conditions as there are practical problems associated with each method and, sometimes, uncertainty as to which is the appropriate measure. Eight trained males (VO2 max: 60 ± 7 ml kg(-1) min(-1)) completed two 60-min cycling trials at ~70% VO2 max at 20°C (MOD) and 35°C (HOT). Measures of Tcore were made every 5 min with oesophageal (Toes) and rectal (Trec) thermistors and of the gastro-intestinal tract temperature (Tgi ) with a temperature-sensitive disposable radio pill. During MOD Toes initially plateaued after 10 min, Tgi after 25 min and Trec after 50 min, whereas during HOT these times had increased to 25 min for Toes and 55 min for both Tgi and Trec. Toes consistently provided lower readings than Trec (0·24-0·26°C) and Tgi (0·26-0·28°C) with Tgi and Trec similar (0·02°C). Readings for Tgi displayed closer agreement with Trec (ICC = 0·92) than Toes (ICC = 0·86) with less agreement between Trec and Toes (ICC = 0·84). 95% of all Tgi readings were within ±0·5°C of Trec and within ±0·6°C of Toes with 95% of all Toes readings being within ±0·7°C of Trec . These results demonstrate distinct response times, absolute values and agreement between Tcore measured at different body locations under different ambient conditions. Implications and considerations are discussed.

Item Type: Article
Subjects: Q Science > QP Physiology
R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Departments > Sport and Exercise Sciences
Depositing User: Debbie Bogard
Date Deposited: 23 Oct 2018 09:47
Last Modified: 22 Nov 2019 10:27
URI: http://eprints.chi.ac.uk/id/eprint/3918

Actions (login required)

View Item View Item