Thermoregulatory responses during road races in hot-humid conditions at the 2019 Athletics World Championships

Aylwin, P; Havenith, G; Cardinale, M; Lloyd, A; Ihsan, M; Taylor, L; Adami, PE; Alhammoud, M; Alonso, J-M; Bouscaren, N; Buitrago, S; Esh, C; Gomez-Ezeiza, J; Garrandes, F; Labidi, M; Lange, G; Moussay, S

Thermoregulatory responses during road races in hot-humid conditions at the 2019 Athletics World Championships

Aylwin, P Havenith, G Cardinale, M Lloyd, A Ihsan, M Taylor, L Adami, PE Alhammoud, M Alonso, J-M Bouscaren, N Buitrago, S Esh, C Gomez-Ezeiza, J Garrandes, F Labidi, M Lange, G Moussay, S

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Publisher:: American Physiological Society
Publication Type:: Journal Article
Citation:: Journal of Applied Physiology, 2023, 134, (5), pp. 1300-1311
Issue Date:: 2023-05-01

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Field	Value	Language
dc.contributor.author	Aylwin, P
dc.contributor.author	Havenith, G
dc.contributor.author	Cardinale, M
dc.contributor.author	Lloyd, A
dc.contributor.author	Ihsan, M
dc.contributor.author	Taylor, L
dc.contributor.author	Adami, PE
dc.contributor.author	Alhammoud, M
dc.contributor.author	Alonso, J-M
dc.contributor.author	Bouscaren, N
dc.contributor.author	Buitrago, S
dc.contributor.author	Esh, C
dc.contributor.author	Gomez-Ezeiza, J
dc.contributor.author	Garrandes, F
dc.contributor.author	Labidi, M
dc.contributor.author	Lange, G
dc.contributor.author	Moussay, S
dc.date.accessioned	2024-05-29T05:13:32Z
dc.date.available	2024-05-29T05:13:32Z
dc.date.issued	2023-05-01
dc.identifier.citation	Journal of Applied Physiology, 2023, 134, (5), pp. 1300-1311
dc.identifier.issn	8750-7587
dc.identifier.issn	1522-1601
dc.identifier.uri	http://hdl.handle.net/10453/179323
dc.description.abstract	The purpose of this study was to characterize thermoregulatory and performance responses of elite road race athletes while competing in hot humid night time conditions during the 2019 IAAF World Athletic Championships Male and female athletes competing in the 20 km racewalk i n i 20 males 24 females 50 km racewalk i n i 19 males 8 females and marathon i n i 15 males 22 females participated Exposed mean skin T sub sk sub and continuous core body T sub c sub temperature were recorded with infrared thermography and ingestible telemetry pill respectively The range of ambient conditions recorded roadside was 29 3 C 32 7 C air temperature 46 81 relative humidity 0 1 1 7 m s sup 1 sup air velocity and 23 5 C 30 6 C wet bulb globe temperature T sub c sub increased by 1 5 0 1 C but mean T sub sk sub decreased by 1 5 0 4 C over the duration of the races T sub sk sub and T sub c sub changed most rapidly at the start of the races and then plateaued with T sub c sub showing a rapid increase again at the end in a pattern mirroring pacing Performance times were between 3 and 20 mean 113 6 longer during the championships compared with the personal best PB of athletes Overall mean performance relative to PB was correlated with the wet bulb globe temperature WBGT of each race i R i sup 2 sup 0 89 but not with thermophysiological variables i R i sup 2 sup 0 3 As previously reported in exercise heat stress in this field study T sub c sub rose with exercise duration whereas T sub sk sub showed a decline The latter contradicts the commonly recorded rise and plateau in laboratory studies at similar ambient temperatures but without realistic air movement b NEW amp NOTEWORTHY b This paper provides a kinetic observation of both core and skin temperatures in 108 elite athletes during various outdoor competition events adding to the very limited data so far available in the literature taken during elite competitions The field skin temperature findings contrast previous laboratory findings like
dc.format	Print-Electronic
dc.language	eng
dc.publisher	American Physiological Society
dc.relation.ispartof	Journal of Applied Physiology
dc.relation.isbasedon	10.1152/japplphysiol.00348.2022
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	06 Biological Sciences, 11 Medical and Health Sciences
dc.subject.classification	Physiology
dc.subject.classification	31 Biological sciences
dc.subject.classification	32 Biomedical and clinical sciences
dc.subject.classification	42 Health sciences
dc.subject.mesh	Humans
dc.subject.mesh	Male
dc.subject.mesh	Female
dc.subject.mesh	Body Temperature Regulation
dc.subject.mesh	Sweating
dc.subject.mesh	Sports
dc.subject.mesh	Skin Temperature
dc.subject.mesh	Exercise
dc.subject.mesh	Hot Temperature
dc.subject.mesh	Humans
dc.subject.mesh	Exercise
dc.subject.mesh	Body Temperature Regulation
dc.subject.mesh	Sweating
dc.subject.mesh	Skin Temperature
dc.subject.mesh	Sports
dc.subject.mesh	Female
dc.subject.mesh	Male
dc.subject.mesh	Hot Temperature
dc.subject.mesh	Humans
dc.subject.mesh	Male
dc.subject.mesh	Female
dc.subject.mesh	Body Temperature Regulation
dc.subject.mesh	Sweating
dc.subject.mesh	Sports
dc.subject.mesh	Skin Temperature
dc.subject.mesh	Exercise
dc.subject.mesh	Hot Temperature
dc.title	Thermoregulatory responses during road races in hot-humid conditions at the 2019 Athletics World Championships
dc.type	Journal Article
utslib.citation.volume	134
utslib.location.activity	United States
utslib.for	06 Biological Sciences
utslib.for	11 Medical and Health Sciences
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Health
utslib.copyright.status	open_access	*
pubs.consider-herdc	true
dc.date.updated	2024-05-29T05:13:30Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	134
utslib.citation.issue	5

Abstract:

The purpose of this study was to characterize thermoregulatory and performance responses of elite road race athletes while competing in hot humid night time conditions during the 2019 IAAF World Athletic Championships Male and female athletes competing in the 20 km racewalk i n i 20 males 24 females 50 km racewalk i n i 19 males 8 females and marathon i n i 15 males 22 females participated Exposed mean skin T sub sk sub and continuous core body T sub c sub temperature were recorded with infrared thermography and ingestible telemetry pill respectively The range of ambient conditions recorded roadside was 29 3 C 32 7 C air temperature 46 81 relative humidity 0 1 1 7 m s sup 1 sup air velocity and 23 5 C 30 6 C wet bulb globe temperature T sub c sub increased by 1 5 0 1 C but mean T sub sk sub decreased by 1 5 0 4 C over the duration of the races T sub sk sub and T sub c sub changed most rapidly at the start of the races and then plateaued with T sub c sub showing a rapid increase again at the end in a pattern mirroring pacing Performance times were between 3 and 20 mean 113 6 longer during the championships compared with the personal best PB of athletes Overall mean performance relative to PB was correlated with the wet bulb globe temperature WBGT of each race i R i sup 2 sup 0 89 but not with thermophysiological variables i R i sup 2 sup 0 3 As previously reported in exercise heat stress in this field study T sub c sub rose with exercise duration whereas T sub sk sub showed a decline The latter contradicts the commonly recorded rise and plateau in laboratory studies at similar ambient temperatures but without realistic air movement b NEW amp NOTEWORTHY b This paper provides a kinetic observation of both core and skin temperatures in 108 elite athletes during various outdoor competition events adding to the very limited data so far available in the literature taken during elite competitions The field skin temperature findings contrast previous laboratory findings like

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http://hdl.handle.net/10453/179323