دورية أكاديمية
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Do E 2 and P 4 contribute to the explained variance in core temperature response for trained women during exertional heat stress when metabolic rates are very high?

التفاصيل البيبلوغرافية
العنوان: Do E 2 and P 4 contribute to the explained variance in core temperature response for trained women during exertional heat stress when metabolic rates are very high?
المؤلفون: Zheng H; School of Sport Exercise and Nutrition, Massey University, Palmerston North, New Zealand., Badenhorst CE; School of Sport Exercise, Nutrition, Massey University, Auckland, New Zealand., Lei TH; College of Physical Education, Hubei Normal University, Huangshi, China., Che Muhamed AM; Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Malaysia., Liao YH; Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan., Fujii N; Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan., Kondo N; Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan., Mündel T; School of Sport Exercise and Nutrition, Massey University, Palmerston North, New Zealand. T.Mundel@massey.ac.nz.
المصدر: European journal of applied physiology [Eur J Appl Physiol] 2022 Oct; Vol. 122 (10), pp. 2201-2212. Date of Electronic Publication: 2022 Jul 07.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 100954790 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1439-6327 (Electronic) Linking ISSN: 14396319 NLM ISO Abbreviation: Eur J Appl Physiol Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Berlin ; New York : Springer-Verlag, c2000-
مواضيع طبية MeSH: Heat Stress Disorders* , Hot Temperature*, Adult ; Body Temperature/physiology ; Body Temperature Regulation/physiology ; Female ; Humans ; Sweating ; Temperature
مستخلص: Purpose: Women remain underrepresented in the exercise thermoregulation literature despite their participation in leisure-time and occupational physical activity in heat-stressful environments continuing to increase. Here, we determined the relative contribution of the primary ovarian hormones (estrogen [E 2 ] and progesterone [P 4 ]) alongside other morphological (e.g., body mass), physiological (e.g., sweat rates), functional (e.g., aerobic fitness) and environmental (e.g., vapor pressure) factors in explaining the individual variation in core temperature responses for trained women working at very high metabolic rates, specifically peak core temperature (T peak ) and work output (mean power output).
Methods: Thirty-six trained women (32 ± 9 year, 53 ± 9 ml·kg -1 ·min -1 ), distinguished by intra-participant (early follicular and mid-luteal phases) or inter-participant (ovulatory vs. anovulatory vs. oral contraceptive pill user) differences in their endogenous E 2 and P 4 concentrations, completed a self-paced 30-min cycling work trial in warm-dry (2.2 ± 0.2 kPa, 34.1 ± 0.2 °C, 41.4 ± 3.4% RH) and/or warm-humid (3.4 ± 0.1 kPa, 30.2 ± 1.2 °C, 79.8 ± 3.7% RH) conditions that yielded 115 separate trials. Stepwise linear regression was used to explain the variance of the dependent variables.
Results: Models were able to account for 60% of the variance in T peak ([Formula: see text] 2 : 41% core temperature at the start of work trial, [Formula: see text] 2 : 15% power output, [Formula: see text] 2 : 4% [E 2 ]) and 44% of the variance in mean power output ([Formula: see text] 2 : 35% peak aerobic power, [Formula: see text] 2 : 9% perceived exertion).
Conclusion: E 2 contributes a small amount toward the core temperature response in trained women, whereby starting core temperature and peak aerobic power explain the greatest variance in T peak and work output, respectively.
(© 2022. The Author(s).)
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معلومات مُعتمدة: RM23116 Royal Society Te Apārangi
فهرسة مساهمة: Keywords: Body temperature; Estrogen; Exercise; Females; Performance; Regression
تواريخ الأحداث: Date Created: 20220707 Date Completed: 20220913 Latest Revision: 20220916
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC9463225
DOI: 10.1007/s00421-022-04996-2
PMID: 35796828
قاعدة البيانات: MEDLINE
الوصف
تدمد:1439-6327
DOI:10.1007/s00421-022-04996-2