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Effects of Cooling During Exercise on Thermoregulatory Responses of Men With Paraplegia.

Bongers, CC and Eijsvogels, TM and van Nes, IJ and Hopman, MT and Thijssen, DHJ (2015) Effects of Cooling During Exercise on Thermoregulatory Responses of Men With Paraplegia. Physical Therapy. ISSN 1538-6724

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Abstract

BACKGROUND: People with spinal cord injury (SCI) have an altered afferent input to the thermoregulatory center, resulting in a reduced efferent response (vasomotor control and sweating capacity) below the level of the lesion. Consequently, core body temperature rises more rapidly during exercise in individuals with SCI compared with people who are able-bodied. Cooling strategies may reduce the thermophysiological strain in SCI. OBJECTIVE: The aim of this study was to examine the effects of a cooling vest on the core body temperature response of people with a thoracic SCI during submaximal exercise. METHODS: Ten men (mean age=44 years, SD=11) with a thoracic lesion (T4-T5 or below) participated in this randomized crossover study. Participants performed two 45-minute exercise bouts at 50% maximal workload (ambient temperature 25°C), with participants randomized to a group wearing a cooling vest or a group wearing no vest (separate days). Core body temperature and skin temperature were continuously measured, and thermal sensation was assessed every 3 minutes. RESULTS: Exercise resulted in an increased core body temperature, skin temperature, and thermal sensation, whereas cooling did not affect core body temperature. The cooling vest effectively decreased skin temperature, increased the core-to-trunk skin temperature gradient, and tended to lower thermal sensation compared with the control condition. LIMITATIONS: The lack of differences in core body temperature among conditions may be a result of the relative moderate ambient temperature in which the exercise was performed. CONCLUSIONS: Despite effectively lowering skin temperature and increasing the core-to-trunk skin temperature gradient, there was no impact of the cooling vest on the exercise-induced increase in core body temperature in men with low thoracic SCI.

Item Type: Article
Uncontrolled Keywords: 1103 Clinical Sciences, 1106 Human Movement And Sports Science
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: American Physical Therapy Assocation
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Date Deposited: 20 Jan 2016 14:02
Last Modified: 15 Oct 2016 23:50
DOI or Identification number: 10.2522/ptj.20150266
URI: http://researchonline.ljmu.ac.uk/id/eprint/2683

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