{"id":13992,"date":"2025-04-25T16:19:54","date_gmt":"2025-04-25T14:19:54","guid":{"rendered":"https:\/\/www.famelab.gr\/?p=13992"},"modified":"2025-10-29T08:48:24","modified_gmt":"2025-10-29T08:48:24","slug":"evidence-of-seasonal-heat-acclimatisation-in-recreationally-active-adults-during-a-mild-summer","status":"publish","type":"post","link":"https:\/\/famelab.gr\/el\/evidence-of-seasonal-heat-acclimatisation-in-recreationally-active-adults-during-a-mild-summer\/","title":{"rendered":"Evidence of seasonal heat acclimatisation in recreationally active adults during a mild summer"},"content":{"rendered":"

Brown HA, Topham TH, Clark B, Flouris AD, Ioannou LG, Telford RD, Smallcombe JW, Jay O, P\u00e9riard JD. Evidence of seasonal heat acclimatisation in recreationally active adults during a mild summer. J Sci Med Sport. 2023 Oct 16:S1440-2440(23)00427-9. doi: 10.1016\/j.jsams.2023.10.006. Epub ahead of print. PMID: 39492335.<\/p>\n

Abstract\"\"<\/strong>
\nObjectives
\nTo assess the magnitude of seasonal heat acclimatisation in recreationally active adults and contextualise the process by documenting the factors that influence adaptations.
\nDesign
\nLongitudinal, repeated measures design.
\nMethods
\nSeventeen (7 females) recreationally active adults (28\u202f\u00b1\u202f8\u202fyr, V\u0307O2peak 54\u202f\u00b1\u202f8\u202fmL\u00b7kg\u22121\u00b7min\u22121) exercising outdoors a minimum of 5\u202fh\u00b7wk\u22121 completed a 45-min heat response test running at 60\u202f% V\u0307O2peak in 40\u202f\u00b0C and 30\u202f% relative humidity prior to, midway through, and following summer. Self-reported physical activity diaries were completed at the beginning and end of summer. Daytime wet-bulb globe temperature was calculated for each day of summer. Data were analysed using Bayesian ordinal regressions.
\nResults
\nDaytime wet-bulb globe temperature was 22.0\u202f\u00b1\u202f4.4\u202f\u00b0C, with the most common hour for recreational exercise being 17:00 to 18:00. Following summer, the rise in oesophageal temperature and mean skin temperature during the heat response test was lower by 0.12\u202f\u00b0C [90\u202f% credible interval: \u22120.30, 0.06; probability of direction\u202f=\u202f87\u202f%] and 0.43\u202f\u00b0C [\u22120.74, \u22120.10; 98\u202f%], respectively. Moreover, forearm local sweat rate increased by 0.26\u202fmg\u00b7cm\u22122\u00b7min\u22121 [0.15, 0.36; 100\u202f%]. There was minimal evidence of a change in the increase in heart rate (1\u202fbeat\u00b7min\u22121 [\u22123, 5; 62\u202f%]), or whole-body sweat rate (0.03\u202fL\u00b7h\u22121 [\u22120.11, 0.15; 68\u202f%]) during the heat response test.
\nConclusions
\nAlthough there was evidence of partial heat adaptation in recreationally active adults following summer, a combination of exercising later in the day and the prevailing environmental conditions (La Ni\u00f1a in South-Eastern Australia) may have blunted the development of further adaptations.<\/p>\n

Keywords: Thermoregulation, Heat adaptation, Sweating, Core temperature<\/p>\n

Full Text Link:<\/p>\n

https:\/\/www.jsams.org\/article\/S1440-2440(23)00427-9\/fulltext<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Brown HA, Topham TH, Clark B, Flouris AD, Ioannou LG, Telford RD, Smallcombe JW, Jay O, P\u00e9riard JD. Evidence of seasonal heat acclimatisation in recreationally active adults during a mild summer. J Sci Med Sport. 2023 Oct 16:S1440-2440(23)00427-9. doi: 10.1016\/j.jsams.2023.10.006. Epub ahead of print. PMID: 39492335. Abstract Objectives To assess the magnitude of seasonal heat […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-13992","post","type-post","status-publish","format-standard","hentry","category-publications-2023"],"_links":{"self":[{"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/posts\/13992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/comments?post=13992"}],"version-history":[{"count":1,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/posts\/13992\/revisions"}],"predecessor-version":[{"id":16490,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/posts\/13992\/revisions\/16490"}],"wp:attachment":[{"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/media?parent=13992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/categories?post=13992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/famelab.gr\/el\/wp-json\/wp\/v2\/tags?post=13992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}