Intermittent sprint performance in the heat is not altered by augmenting thermal perception via L-menthol or capsaicin mouth rinses

Purpose Cooling sensations elicited by mouth rinsing with L-menthol have been reported as ergogenic. Presently, responses to L-menthol mouth rinsing during intermittent sprint performance (ISP) in the heat are unknown and the impact of increased thermal perception on ISP via capsaicin has also not b...

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Veröffentlicht in:European journal of applied physiology 2019-03, Vol.119 (3), p.653-664
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description Purpose Cooling sensations elicited by mouth rinsing with L-menthol have been reported as ergogenic. Presently, responses to L-menthol mouth rinsing during intermittent sprint performance (ISP) in the heat are unknown and the impact of increased thermal perception on ISP via capsaicin has also not been quantified. This experiment aimed to identify whether eliciting cooling/warming sensations via L-menthol/capsaicin would alter ISP in the heat. Method Fourteen participants (mass = 72 ± 9 kg, V ˙ O 2 peak  = 3.30 ± 0.90 L min −1 ), undertook four experimental trials, involving 40 min of ISP in hot conditions (40.2 ± 0.6 °C, 42 ± 2% R.H.) with mouth rinsing (25 mL, 6 s) at the protocol onset, and every 10 min thereafter. Cooling (0.01% L-menthol; MEN), warming (0.2% capsaicin; CAP), placebo (0.3 sham-CHO; PLA), and control (water; CON) mouth rinses were utilized. Performance was quantified via power (PP) and work done (WD) during sprints. Heart rate (HR), core ( T rec ) and skin ( T skin ) temperature, perceived exertion (RPE), thermal sensation ( T sens ), and comfort ( T com ) were measured at 10 min intervals. Sweat rate (whole-body sweat rate) was calculated from ∆mass. Result PP reduced over time ( P   0.05). T com increased over time and was lower in MEN (2.7 ± 1.1; P  
doi_str_mv 10.1007/s00421-018-4055-0
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R. ; Wrightson, J. G. ; Hayes, M.</creator><creatorcontrib>Gibson, O. R. ; Wrightson, J. G. ; Hayes, M.</creatorcontrib><description>Purpose Cooling sensations elicited by mouth rinsing with L-menthol have been reported as ergogenic. Presently, responses to L-menthol mouth rinsing during intermittent sprint performance (ISP) in the heat are unknown and the impact of increased thermal perception on ISP via capsaicin has also not been quantified. This experiment aimed to identify whether eliciting cooling/warming sensations via L-menthol/capsaicin would alter ISP in the heat. Method Fourteen participants (mass = 72 ± 9 kg, V ˙ O 2 peak  = 3.30 ± 0.90 L min −1 ), undertook four experimental trials, involving 40 min of ISP in hot conditions (40.2 ± 0.6 °C, 42 ± 2% R.H.) with mouth rinsing (25 mL, 6 s) at the protocol onset, and every 10 min thereafter. Cooling (0.01% L-menthol; MEN), warming (0.2% capsaicin; CAP), placebo (0.3 sham-CHO; PLA), and control (water; CON) mouth rinses were utilized. Performance was quantified via power (PP) and work done (WD) during sprints. Heart rate (HR), core ( T rec ) and skin ( T skin ) temperature, perceived exertion (RPE), thermal sensation ( T sens ), and comfort ( T com ) were measured at 10 min intervals. Sweat rate (whole-body sweat rate) was calculated from ∆mass. Result PP reduced over time ( P  &lt; 0.05); however, no change was observed between trials for PP or WD ( P  &gt; 0.05). T com increased over time and was lower in MEN (2.7 ± 1.1; P  &lt; 0.05) with no difference between CAP (3.1 ± 1.2), PLA (3.2 ± 1.3) and CON (3.1 ± 1.3). RPE, T sens HR, T rec , and T skin increased over time ( P  &lt; 0.05) with no between trial differences ( P  &gt; 0.05). Conclusion Despite improved thermal comfort via L-menthol, ISP did not improve. Capsaicin did not alter thermal perception or ISP. The reduction in ISP over time in hot conditions is not influenced by thermal perception.</description><identifier>ISSN: 1439-6319</identifier><identifier>EISSN: 1439-6327</identifier><identifier>DOI: 10.1007/s00421-018-4055-0</identifier><identifier>PMID: 30580384</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adult ; Biomedical and Life Sciences ; Biomedicine ; Capsaicin ; Capsaicin - pharmacology ; Cooling ; Exercise - physiology ; Heart rate ; Heat ; Hot Temperature ; Human Physiology ; Humans ; L-Menthol ; Male ; Menthol ; Menthol - administration &amp; dosage ; Menthol - pharmacology ; Mouth ; Mouthwashes ; Mouthwashes - pharmacology ; Occupational Medicine/Industrial Medicine ; Original ; Original Article ; Perception ; Perception - physiology ; Physical Exertion - physiology ; Skin ; Skin Temperature ; Sports Medicine ; Sweat ; Thermosensing - drug effects ; Young Adult</subject><ispartof>European journal of applied physiology, 2019-03, Vol.119 (3), p.653-664</ispartof><rights>The Author(s) 2018</rights><rights>European Journal of Applied Physiology is a copyright of Springer, (2018). All Rights Reserved. © 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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R.</creatorcontrib><creatorcontrib>Wrightson, J. G.</creatorcontrib><creatorcontrib>Hayes, M.</creatorcontrib><title>Intermittent sprint performance in the heat is not altered by augmenting thermal perception via L-menthol or capsaicin mouth rinses</title><title>European journal of applied physiology</title><addtitle>Eur J Appl Physiol</addtitle><addtitle>Eur J Appl Physiol</addtitle><description>Purpose Cooling sensations elicited by mouth rinsing with L-menthol have been reported as ergogenic. Presently, responses to L-menthol mouth rinsing during intermittent sprint performance (ISP) in the heat are unknown and the impact of increased thermal perception on ISP via capsaicin has also not been quantified. This experiment aimed to identify whether eliciting cooling/warming sensations via L-menthol/capsaicin would alter ISP in the heat. Method Fourteen participants (mass = 72 ± 9 kg, V ˙ O 2 peak  = 3.30 ± 0.90 L min −1 ), undertook four experimental trials, involving 40 min of ISP in hot conditions (40.2 ± 0.6 °C, 42 ± 2% R.H.) with mouth rinsing (25 mL, 6 s) at the protocol onset, and every 10 min thereafter. Cooling (0.01% L-menthol; MEN), warming (0.2% capsaicin; CAP), placebo (0.3 sham-CHO; PLA), and control (water; CON) mouth rinses were utilized. Performance was quantified via power (PP) and work done (WD) during sprints. Heart rate (HR), core ( T rec ) and skin ( T skin ) temperature, perceived exertion (RPE), thermal sensation ( T sens ), and comfort ( T com ) were measured at 10 min intervals. Sweat rate (whole-body sweat rate) was calculated from ∆mass. Result PP reduced over time ( P  &lt; 0.05); however, no change was observed between trials for PP or WD ( P  &gt; 0.05). T com increased over time and was lower in MEN (2.7 ± 1.1; P  &lt; 0.05) with no difference between CAP (3.1 ± 1.2), PLA (3.2 ± 1.3) and CON (3.1 ± 1.3). RPE, T sens HR, T rec , and T skin increased over time ( P  &lt; 0.05) with no between trial differences ( P  &gt; 0.05). Conclusion Despite improved thermal comfort via L-menthol, ISP did not improve. Capsaicin did not alter thermal perception or ISP. 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R.</au><au>Wrightson, J. G.</au><au>Hayes, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intermittent sprint performance in the heat is not altered by augmenting thermal perception via L-menthol or capsaicin mouth rinses</atitle><jtitle>European journal of applied physiology</jtitle><stitle>Eur J Appl Physiol</stitle><addtitle>Eur J Appl Physiol</addtitle><date>2019-03-01</date><risdate>2019</risdate><volume>119</volume><issue>3</issue><spage>653</spage><epage>664</epage><pages>653-664</pages><issn>1439-6319</issn><eissn>1439-6327</eissn><abstract>Purpose Cooling sensations elicited by mouth rinsing with L-menthol have been reported as ergogenic. Presently, responses to L-menthol mouth rinsing during intermittent sprint performance (ISP) in the heat are unknown and the impact of increased thermal perception on ISP via capsaicin has also not been quantified. This experiment aimed to identify whether eliciting cooling/warming sensations via L-menthol/capsaicin would alter ISP in the heat. Method Fourteen participants (mass = 72 ± 9 kg, V ˙ O 2 peak  = 3.30 ± 0.90 L min −1 ), undertook four experimental trials, involving 40 min of ISP in hot conditions (40.2 ± 0.6 °C, 42 ± 2% R.H.) with mouth rinsing (25 mL, 6 s) at the protocol onset, and every 10 min thereafter. Cooling (0.01% L-menthol; MEN), warming (0.2% capsaicin; CAP), placebo (0.3 sham-CHO; PLA), and control (water; CON) mouth rinses were utilized. Performance was quantified via power (PP) and work done (WD) during sprints. Heart rate (HR), core ( T rec ) and skin ( T skin ) temperature, perceived exertion (RPE), thermal sensation ( T sens ), and comfort ( T com ) were measured at 10 min intervals. Sweat rate (whole-body sweat rate) was calculated from ∆mass. Result PP reduced over time ( P  &lt; 0.05); however, no change was observed between trials for PP or WD ( P  &gt; 0.05). T com increased over time and was lower in MEN (2.7 ± 1.1; P  &lt; 0.05) with no difference between CAP (3.1 ± 1.2), PLA (3.2 ± 1.3) and CON (3.1 ± 1.3). RPE, T sens HR, T rec , and T skin increased over time ( P  &lt; 0.05) with no between trial differences ( P  &gt; 0.05). Conclusion Despite improved thermal comfort via L-menthol, ISP did not improve. Capsaicin did not alter thermal perception or ISP. The reduction in ISP over time in hot conditions is not influenced by thermal perception.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>30580384</pmid><doi>10.1007/s00421-018-4055-0</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Biomedical and Life Sciences
Biomedicine
Capsaicin
Capsaicin - pharmacology
Cooling
Exercise - physiology
Heart rate
Heat
Hot Temperature
Human Physiology
Humans
L-Menthol
Male
Menthol
Menthol - administration & dosage
Menthol - pharmacology
Mouth
Mouthwashes
Mouthwashes - pharmacology
Occupational Medicine/Industrial Medicine
Original
Original Article
Perception
Perception - physiology
Physical Exertion - physiology
Skin
Skin Temperature
Sports Medicine
Sweat
Thermosensing - drug effects
Young Adult
title Intermittent sprint performance in the heat is not altered by augmenting thermal perception via L-menthol or capsaicin mouth rinses
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