eprintid: 10187914 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/18/79/14 datestamp: 2024-02-27 10:54:50 lastmod: 2024-02-27 10:54:50 status_changed: 2024-02-27 10:54:50 type: article metadata_visibility: show sword_depositor: 699 creators_name: Simpson, CH title: Comment on Havenga et al. (2022): Standard heat stress indices may not be appropriate for assessing marathons ispublished: pub divisions: UCL divisions: B04 divisions: C04 divisions: F34 keywords: UTCI, Comrades Marathon, heat stress, thermoregulation note: This article is published under a Creative Commons Attribution 4.0 International Licence (http://creativecommons.org/licenses/by/4.0/). abstract: An article in the July/August 2022 issue (Havenga et al., S Afr J Sci. 2022;118(7/8), Art. #13118) argued that changing the date of the Comrades Marathon from May to August would result in increased heat stress for participants. Heat stress was estimated using the Universal Thermal Climate Index (UTCI), which is designed to represent a person walking, not running. In this Commentary, I argue that using the UTCI may lead to an underestimation of heat stress for the Comrades Marathon, and that the conclusion that August has worse heat stress than May depends on the assumptions in the estimation of heat stress. date: 2024 date_type: published publisher: Academy of Science of South Africa official_url: https://doi.org/10.17159/sajs.2024/16445 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2247069 doi: 10.17159/sajs.2024/16445 lyricists_name: Simpson, Charles lyricists_id: CHSIM58 actors_name: Flynn, Bernadette actors_id: BFFLY94 actors_role: owner full_text_status: public publication: South African Journal of Science volume: 120 number: 1/2 issn: 1996-7489 citation: Simpson, CH; (2024) Comment on Havenga et al. (2022): Standard heat stress indices may not be appropriate for assessing marathons. South African Journal of Science , 120 (1/2) 10.17159/sajs.2024/16445 <https://doi.org/10.17159/sajs.2024%2F16445>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10187914/1/SAJS_16445.pdf