dc.contributor.author | Wallace, Phillip J. | |
dc.contributor.author | Hartley, Geoffrey L. | |
dc.contributor.author | Nowlan, Josh G. | |
dc.contributor.author | Ljubanovich, Johnathan | |
dc.contributor.author | Sieh, Nina | |
dc.contributor.author | Taber, Michael J. | |
dc.contributor.author | Gagnon, Dominique D. | |
dc.contributor.author | Cheung, Stephen S. | |
dc.date.accessioned | 2023-11-29T10:36:55Z | |
dc.date.available | 2023-11-29T10:36:55Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Wallace, P. J., Hartley, G. L., Nowlan, J. G., Ljubanovich, J., Sieh, N., Taber, M. J., Gagnon, D. D., & Cheung, S. S. (2024). Endurance Capacity Impairment in Cold Air Ranging from Skin Cooling to Mild Hypothermia. <i>Journal of Applied Physiology</i>, <i>136</i>(1), 58-69. <a href="https://doi.org/10.1152/japplphysiol.00663.2023" target="_blank">https://doi.org/10.1152/japplphysiol.00663.2023</a> | |
dc.identifier.other | CONVID_194524752 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/92145 | |
dc.description.abstract | Introduction: We tested the effects of cold air (0°C) exposure on endurance capacity to different levels of cold strain ranging from skin cooling to core cooling of ∆-1.0°C.
Methods: Ten males completed cycling time-to-exhaustion (TTE) at 70% of their peak power output following: i) 30-min of exposure to 22°C thermoneutral air (TN), ii) 30-min exposure to 0°C air leading to a cold shell (CS), iii) 0°C air exposure causing mild hypothermia of -0.5°C from baseline rectal temperature (HYPO-0.5°C), and iv) 0°C air exposure causing mild hypothermia of -1.0°C from baseline rectal temperature (HYPO-1.0°C). The latter three conditions tested TTE in 0°C air.
Results: Core temperature and seven-site mean skin temperature at the start of the TTE were: TN (37.0 ± 0.2°C, 31.2 ± 0.8°C), CS (37.1 ± 0.3°C, 25.5 ± 1.4°C), HYPO-0.5°C (36.6 ± 0.4°C, 22.3 ± 2.2°C), HYPO-1.0°C (36.4 ± 0.5°C, 21.4 ± 2.7°C). There was a significant condition effect (p≤0.001) for TTE, where TTE declined from TN (23.75 ± 13.75 min) to CS (16.22 ± 10.30 min, ∆-30.9 ± 21.5%, p=0.055), HYPO-0.5°C (8.50 ± 5.23 min, ∆-61.4 ± 19.7, p≤0.001), and HYPO-1.0°C (6.50 ± 5.60 min, ∆-71.6 ± 16.4%, p≤0.001). Furthermore, participants had a greater endurance capacity in CS compared to HYPO-0.5°C (p=0.046), and HYPO-1.0°C (p=0.007), with no differences between HYPO-0.5°C and HYPO-1.0°C (p=1.00).
Conclusion: Endurance capacity impairment at 70% peak power output occurs early in cold exposure with skin cooling and inadequate clothing, with significantly larger impairments with mild hypothermia up to ∆-1.0°C. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | American Physiological Society | |
dc.relation.ispartofseries | Journal of Applied Physiology | |
dc.rights | In Copyright | |
dc.subject.other | core cooling | |
dc.subject.other | mild hypothermia | |
dc.subject.other | endurance capacity | |
dc.subject.other | cold strain | |
dc.subject.other | heat debt | |
dc.title | Endurance Capacity Impairment in Cold Air Ranging from Skin Cooling to Mild Hypothermia | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-202311298149 | |
dc.contributor.laitos | Liikuntatieteellinen tiedekunta | fi |
dc.contributor.laitos | Faculty of Sport and Health Sciences | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.format.pagerange | 58-69 | |
dc.relation.issn | 8750-7587 | |
dc.relation.numberinseries | 1 | |
dc.relation.volume | 136 | |
dc.type.version | acceptedVersion | |
dc.rights.copyright | © 2023, Journal of Applied Physiology | |
dc.rights.accesslevel | openAccess | fi |
dc.subject.yso | altistuminen | |
dc.subject.yso | suorituskyky | |
dc.subject.yso | ruumiinlämpö | |
dc.subject.yso | kestävyys | |
dc.subject.yso | vaatteet | |
dc.subject.yso | hypotermia | |
dc.subject.yso | kylmyys | |
dc.subject.yso | iho | |
dc.subject.yso | lämpötila | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p12853 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p14041 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p2413 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p10119 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p3594 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p4680 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p2053 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p1769 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p2100 | |
dc.rights.url | http://rightsstatements.org/page/InC/1.0/?language=en | |
dc.relation.doi | 10.1152/japplphysiol.00663.2023 | |
jyx.fundinginformation | This study was supported by a Discovery grant from the Natural Science and Engineering Research Council (NSERC) of Canada (SSC, 2018-04077). PJW was supported through a NSERC Doctoral (PGS D) scholarship, Ontario Graduate Scholarship, and Queen Elizabeth II 570 Graduate Scholarship in Science & Technology over the course of this research. | |
dc.type.okm | A1 | |