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http://bura.brunel.ac.uk/handle/2438/15678
Title: | Physiological and Perceptual Responses to Exercising in Restrictive Heat Loss Attire with Use of an Upper-body Sauna Suit in Temperate and Hot Conditions |
Authors: | Willmott, AGB Gibson, O James, CA Hayes, M Maxwell, NS |
Keywords: | Sauna suit;Heat stress;Thermoregulation;Physiological strain;Heat acclimation;Training |
Issue Date: | 2018 |
Publisher: | TAYLOR & FRANCIS |
Citation: | Temperature |
Abstract: | The aim of this experiment was to quantify physiological and perceptual responses to exercise with and without restrictive heat loss attire in hot and temperate conditions. Ten moderately-trained individuals (mass; 69.44±7.50 kg, body fat; 19.7±7.6%) cycled for 30- mins (15-mins at 2 W.kg-1 then 15-mins at 1 W.kg-1 ) under four experimental conditions; temperate (TEMP, 22°C/45%), hot (HOT, 45°C/20%) and, temperate (TEMPSUIT, 22°C/45%) and hot (HOTSUIT, 45°C/20%) whilst wearing an upper-body “sauna suit”. Core temperature changes were higher (P<0.05) in TEMPSUIT (+1.7±0.4°C.hr-1 ), HOT (+1.9±0.5°C.hr-1 ) and HOTSUIT (+2.3±0.5°C.hr-1 ) than TEMP (+1.3±0.3°C.hr-1 ). Skin temperature was higher (P<0.05) in HOT (36.53±0.93°C) and HOTSUIT (37.68±0.68°C) than TEMP (33.50±1.77°C) and TEMPSUIT (33.41±0.70°C). Sweat rate was greater (P<0.05) in TEMPSUIT (0.89±0.24 L.hr-1 ), HOT (1.14±0.48 L.hr-1 ) and HOTSUIT (1.51±0.52L.hr-1 ) than TEMP (0.56±0.27 L.hr-1 ). Peak heart rate was higher (P<0.05) in TEMPSUIT (155±23 b.min-1 ), HOT (163±18 b.min-1 ) and HOTSUIT (171±18 b.min-1 ) than TEMP (151±20 b.min-1 ). Thermal sensation and perceived exertion were greater (P<0.05) in TEMPSUIT (5.8±0.5 and 14±1), HOT (6.4±0.5 and 15±1) and HOTSUIT (7.1±0.5 and 16±1) than TEMP (5.3±0.5 and 14±1). Exercising in an upper-body sauna suit within temperate conditions induces a greater physiological strain and evokes larger sweat losses compared to exercising in the same conditions, without restricting heat loss. In hot conditions, wearing a sauna suit increases physiological and perceptual strain further, which may accelerate the stimuli for heat adaptation and improve HA efficiency. |
URI: | http://bura.brunel.ac.uk/handle/2438/15678 |
ISSN: | 2332-8959 2332-8940 |
Appears in Collections: | Dept of Life Sciences Research Papers |
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