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Altered core and skin temperature responses to endurance exercise in heart failure patients and healthy controls.

Benda, NM and Eijsvogels, TM and Van Dijk, AP and Bellersen, L and Thijssen, DHJ and Hopman, MT (2016) Altered core and skin temperature responses to endurance exercise in heart failure patients and healthy controls. EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY, 23 (2). pp. 137-144. ISSN 2047-4873

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Abstract

BACKGROUND: Exercise training represents a central aspect of rehabilitation of heart failure patients. Previous work on passive heating suggests impaired thermoregulatory responses in heart failure patients. However, no previous study directly examined thermoregulatory responses to an exercise bout, that is, active heating, as typically applied in rehabilitation settings in heart failure. DESIGN: Cross-sectional observational study to compare changes in core body temperature (Tcore) and skin temperature (Tskin) during exercise between heart failure patients and controls. METHODS: Fourteen heart failure subjects (65 ± 7 years, 13:1 male:female) and 14 healthy controls (61 ± 5 years, 12:2 male:female) were included. Tcore (telemetric temperature pill) and Tskin (skin thermistors) were measured continuously during a 45-min cycle exercise at comparable relative exercise intensity. RESULTS: Tcore increased to a similar extent in both groups (controls 1.1 ± 0.4℃, heart failure patients 0.9 ± 0.3℃, 'time*group': p = 0.15). Tskin decreased during the initial phase of exercise in both groups, followed by an increase in Tskin in controls (1.2 ± 1.0℃), whilst Tskin remained low in HF patients (-0.3 ± 1.4℃) ('time*group': p < 0.001). Furthermore, we found that a given change in Tcore was associated with a smaller increase in Tskin in heart failure patients compared with controls. When comparing heart failure patients and controls who performed exercise at similar absolute workload, between-group differences disappeared (p-values > 0.05). CONCLUSION: Heart failure patients and controls show comparable exercise-induced increase in Tcore, whilst heart failure patients demonstrate altered Tskin responses to exercise and attenuated elevation in Tskin per increase in Tcore. These impaired thermoregulatory responses to exercise are, at least partly, explained by the lower absolute workload and lower physical fitness level in heart failure patients.

Item Type: Article
Uncontrolled Keywords: Body temperature; body temperature regulation; exercise; heart failure; skin temperature
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: SAGE PUBLICATIONS LTD
Related URLs:
Date Deposited: 19 Jan 2016 15:30
Last Modified: 13 Sep 2017 19:36
DOI or Identification number: 10.1177/2047487315574281
URI: http://researchonline.ljmu.ac.uk/id/eprint/2687

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