Physiological Differences between Heat Tolerant and Heat Intolerant Young Healthy Women

Autor/inn/en	Yanovich, Ran; Ketko, Itay; Muginshtein-Simkovitch, Jeni; Yanovich, Einat; Eliyahu, Uri; Fleischmann, Chen; Atias-Varon, Danit; Waissengrin, Barliz; Makranz, Chen; Heled, Yuval
Titel	Physiological Differences between Heat Tolerant and Heat Intolerant Young Healthy Women
Quelle	In: Research Quarterly for Exercise and Sport, 90 (2019) 3, S.307-317 (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0270-1367
DOI	10.1080/02701367.2019.1599799
Schlagwörter	Physiology; Females; Heat; Contraception; Foreign Countries; Young Adults; Human Body; Body Composition; Body Height; Body Weight; Metabolism; Israel + Suchen Sie Ihr Suchwort? Physiologie; Weibliches Geschlecht; Hitze; Empfängnisverhütung; Ausland; Young adult; Junger Erwachsener; Menschlicher Körper; Körpergröße; Körpergewicht; Stoffwechsel
Abstract	Purpose: Heat intolerance (HI) is determined in the Israel Defense Force according to a heat tolerance test (HTT) before returning to duty after an exertional heat stroke (EHS) event. Recently, increased numbers of female combatants resulted in an increased number of EHS cases among women and a higher percentage of heat intolerance (HI) individuals. We aimed to evaluate the differences between tolerance to heat among women performing an HTT in relation to their menstrual cycle phase. Method: Thirty-three female participants were sorted into two groups: HI and heat tolerant (HT) according to two HTTs performed during both the luteal and follicular phases of the menstrual cycle or while consuming and during a break from consuming contraceptives. Results: HT women had an 18% higher maximal oxygen uptake (p < 0.005, 95% CI [2.6,9.8]) and 1.2% lower skin temperature in the HTT at the during and follicular phases (p < 0.01, 95% CI [0.12,0.77]) and 1.7% lower at the off and luteal phases (p < 0.001, 95% CI [0.34,0.92]). The mean sweat rate was 14% lower among the HI group only at the HTT at the during and follicular phases (p < 0.05, 95% CI (3,88)]). Conclusion: We found that HT can be predicted using aerobic capacity and core body temperature. Moreover, during the luteal phase, women presented altered thermoregulation that decreased the probability of being HT. This emphasizes the importance of considering the HT/HI criteria in the HTT for women, according to their aerobic ability and menstrual-cycle phase. (As Provided).
Anmerkungen	Routledge. Available from: Taylor & Francis, Ltd. 530 Walnut Street Suite 850, Philadelphia, PA 19106. Tel: 800-354-1420; Tel: 215-625-8900; Fax: 215-207-0050; Web site: http://www.tandf.co.uk/journals
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01