Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear
Impaired respiration reduces firefighters’ work capacity. This study evaluated the effect of menthol lozenge on respiratory and perceptual responses during exercise in a hot environment. Ten participants wearing firefighter protective gear performed two repeated exercise and rest trials in a counter...
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Montenegrin Sports Academy
2015-09-01
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doaj-06234468979a459f84bf07c74ef8ff822021-06-02T04:47:27ZengMontenegrin Sports AcademyMontenegrin Journal of Sports Science and Medicine1800-87551800-87632015-09-01422934Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective GearYang ZhangGytis BalilionisCatalina M. Casaru Randall E. SchumackerYasmin H. Neggers Matthew D. Curtner-SmithMark T. RichardsonJames M. Green Phillip A. Bishop Impaired respiration reduces firefighters’ work capacity. This study evaluated the effect of menthol lozenge on respiratory and perceptual responses during exercise in a hot environment. Ten participants wearing firefighter protective gear performed two repeated exercise and rest trials in a counter-balanced order. Exercise consisted of two bouts of 20-min treadmill exercise at 60% of maximal oxygen uptake and one bout of 20-min stepping exercise at a wet bulb global temperature of 35°C. Participants either took 10-mg menthol or control lozenges prior to the beginning of each exercise bout. Respiratory gas exchange, heart rate, thermal sensation, and breathing comfort were continuously recorded. Menthol lozenges significantly increased pulmonary ventilation (menthol: 45.0±6.6 L•min-1 vs. control: 41.4±5.8 L•min-1 and menthol: 52.7±9.7 L•min-1 vs. control: 46.5±7.0 L•min-1, for the 1st and 2nd treadmill exercise, respectively) and oxygen consumption (menthol: 26.7±2.0 ml•kg-1•min-1 vs. control: 25.2±2.3 ml•kg-1•min-1 and menthol: 28.8±2.3 ml•kg-1•min-1 vs. control: 26.9±1.9 ml•kg-1•min-1, for the 1st and 2nd treadmill exercise, respe¬cti¬ve¬ly) (p<0.05). The effect of menthol on respiration disappeared during the stepping exercise (p>0.05). The ventilatory equivalents though were not different throughout the exercise (p>0.05). Ratings of thermal sensation and breathing comfort were not different (p>0.05). It was concluded that menthol could alter breathing pattern and increase respiratory responses during strenuous exercise in the heat. There was no favorable effect of menthol on respiratory or perceptual responses under exercise-heat stress.http://www.mjssm.me/clanci/MJSSM_Sept_2015_Zhang.pdfFirefighterprotective clothingrespiration |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yang Zhang Gytis Balilionis Catalina M. Casaru Randall E. Schumacker Yasmin H. Neggers Matthew D. Curtner-Smith Mark T. Richardson James M. Green Phillip A. Bishop |
spellingShingle |
Yang Zhang Gytis Balilionis Catalina M. Casaru Randall E. Schumacker Yasmin H. Neggers Matthew D. Curtner-Smith Mark T. Richardson James M. Green Phillip A. Bishop Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear Montenegrin Journal of Sports Science and Medicine Firefighter protective clothing respiration |
author_facet |
Yang Zhang Gytis Balilionis Catalina M. Casaru Randall E. Schumacker Yasmin H. Neggers Matthew D. Curtner-Smith Mark T. Richardson James M. Green Phillip A. Bishop |
author_sort |
Yang Zhang |
title |
Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear |
title_short |
Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear |
title_full |
Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear |
title_fullStr |
Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear |
title_full_unstemmed |
Effect of Menthol on Respiratory and Perceptual Responses to Exercise in Firefighter Protective Gear |
title_sort |
effect of menthol on respiratory and perceptual responses to exercise in firefighter protective gear |
publisher |
Montenegrin Sports Academy |
series |
Montenegrin Journal of Sports Science and Medicine |
issn |
1800-8755 1800-8763 |
publishDate |
2015-09-01 |
description |
Impaired respiration reduces firefighters’ work capacity. This study evaluated the effect of menthol lozenge on respiratory and perceptual responses during exercise in a hot environment. Ten participants wearing firefighter protective gear performed two repeated exercise and rest trials in a counter-balanced order. Exercise consisted of two bouts of 20-min treadmill exercise at 60% of maximal oxygen uptake and one bout of 20-min stepping exercise at a wet bulb global temperature of 35°C. Participants either took 10-mg menthol or control lozenges prior to the beginning of each exercise bout. Respiratory gas exchange, heart rate, thermal sensation, and breathing comfort were continuously recorded. Menthol lozenges significantly increased pulmonary ventilation (menthol: 45.0±6.6 L•min-1 vs. control: 41.4±5.8 L•min-1 and menthol: 52.7±9.7 L•min-1 vs. control: 46.5±7.0 L•min-1, for the 1st and 2nd treadmill exercise, respectively) and oxygen consumption (menthol: 26.7±2.0 ml•kg-1•min-1 vs. control: 25.2±2.3 ml•kg-1•min-1 and menthol: 28.8±2.3 ml•kg-1•min-1 vs. control: 26.9±1.9 ml•kg-1•min-1, for the 1st and 2nd treadmill exercise, respe¬cti¬ve¬ly) (p<0.05). The effect of menthol on respiration disappeared during the stepping exercise (p>0.05). The ventilatory equivalents though were not different throughout the exercise (p>0.05). Ratings of thermal sensation and breathing comfort were not different (p>0.05). It was concluded that menthol could alter breathing pattern and increase respiratory responses during strenuous exercise in the heat. There was no favorable effect of menthol on respiratory or perceptual responses under exercise-heat stress. |
topic |
Firefighter protective clothing respiration |
url |
http://www.mjssm.me/clanci/MJSSM_Sept_2015_Zhang.pdf |
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