التفاصيل البيبلوغرافية
| العنوان: |
Menstrual phase and ambient temperature do not influence iron regulation in the acute exercise period. |
| المؤلفون: |
Zheng H; School of Sport Exercise and Nutrition, Massey University, Palmerston North, New Zealand., Badenhorst CE; School of Sport Exercise and Nutrition, Massey University, Auckland, New Zealand., Lei TH; College of Physical Education, Hubei Normal University, Huangshi, China., Liao YH; Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan., Che Muhamed AM; Advanced Medical and Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia., 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. |
| المصدر: |
American journal of physiology. Regulatory, integrative and comparative physiology [Am J Physiol Regul Integr Comp Physiol] 2021 Jun 01; Vol. 320 (6), pp. R780-R790. Date of Electronic Publication: 2021 Mar 31. |
| نوع المنشور: |
Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: American Physiological Society Country of Publication: United States NLM ID: 100901230 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1522-1490 (Electronic) Linking ISSN: 03636119 NLM ISO Abbreviation: Am J Physiol Regul Integr Comp Physiol Subsets: MEDLINE |
| أسماء مطبوعة: |
Original Publication: Bethesda, Md. : American Physiological Society |
| مواضيع طبية MeSH: |
Temperature*, Body Temperature Regulation/*physiology , Exercise/*physiology , Menstrual Cycle/*physiology, Adult ; Body Temperature/physiology ; Female ; Heart Rate/physiology ; Heat Stress Disorders/physiopathology ; Heat-Shock Response/physiology ; Humans |
| مستخلص: |
The current study investigated whether ambient heat augments the inflammatory and postexercise hepcidin response in women and if menstrual phase and/or self-pacing modulate these physiological effects. Eight trained females (age: 37 ± 7 yr; V̇o 2max : 46 ± 7 mL·kg -1 ·min -1 ; peak power output: 4.5 ± 0.8 W·kg -1 ) underwent 20 min of fixed-intensity cycling (100 W and 125 W) followed by a 30-min work trial (∼75% V̇o 2max ) in a moderate (MOD: 20 ± 1°C, 53 ± 8% relative humidity) and warm-humid (WARM: 32 ± 0°C, 75 ± 3% relative humidity) environment in both their early follicular (days 5 ± 2) and midluteal (days 21 ± 3) phases. Mean power output was 5 ± 4 W higher in MOD than in WARM ( P = 0.02) such that the difference in core temperature rise was limited between environments (-0.29 ± 0.18°C in MOD, P < 0.01). IL-6 and hepcidin both increased postexercise (198% and 38%, respectively); however, neither was affected by ambient temperature or menstrual phase (all P > 0.15). Multiple regression analysis demonstrated that the IL-6 response to exercise was explained by leukocyte and platelet count ( r 2 = 0.72, P < 0.01), and the hepcidin response to exercise was explained by serum iron and ferritin ( r 2 = 0.62, P < 0.01). During exercise, participants almost matched their fluid loss (0.48 ± 0.18 kg·h -1 ) with water intake (0.35 ± 0.15 L·h -1 ) such that changes in body mass (-0.3 ± 0.3%) and serum osmolality (0.5 ± 2.0 osmol·kgH 2 O -1 ) were minimal or negligible, indicating a behavioral fluid-regulatory response. These results indicate that trained, iron-sufficient women suffer no detriment to their iron regulation in response to exercise with acute ambient heat stress or between menstrual phases on account of a performance-physiological trade-off. |
| فهرسة مساهمة: |
Keywords: fluid balance; heat stress; iron regulation; menstrual cycle |
| تواريخ الأحداث: |
Date Created: 20210331 Date Completed: 20210728 Latest Revision: 20210728 |
| رمز التحديث: |
20240628 |
| DOI: |
10.1152/ajpregu.00014.2021 |
| PMID: |
33787332 |
| قاعدة البيانات: |
MEDLINE |
