التفاصيل البيبلوغرافية
| العنوان: |
Ventilatory Changes After Active Heat Acclimation for Multiday Ultramarathon Races in the Sahara Desert |
| المؤلفون: |
Serna, Selima D, Clegg, Miriam E, White, Matthew D |
| المساهمون: |
Natural Sciences and Engineering Research Council of Canada |
| المصدر: |
The FASEB Journal ; volume 24, issue S1 ; ISSN 0892-6638 1530-6860 |
| بيانات النشر: |
Wiley |
| سنة النشر: |
2010 |
| المجموعة: |
Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: |
To determine the effect of active heat acclimation (HA) on ventilatory responses, 4 endurance‐trained athletes (42.0 ± 5.7 y, mean ± SD) underwent 10 day of activity in 35–40°C and ~15% RH conditions to prepare for multiday ultramarathon races in the Sahara desert. Exercise during HA included 1 h/day of running at ≥50% maximal oxygen consumption (VO 2 max). Physiological assessments included pre‐ and post‐HA VO 2 max, heart rate (HR), esophageal (T es ), rectal (T re ), and skin temperatures (4 sites). Pre‐ and post‐HA VO 2 max values were not significantly different (52.8 ± 4.0 vs 52.0 ± 4.6 mL·kg −1 ·min −1 , p = 0.35). Attainment of HA was confirmed by a significant reduction in exercise HR ( p < 0.01) and trends (p=0.12) for reductions in both Thermal Comfort ratings and Borg Ratings of Perceived Exertion over the 10‐d HA period. During incremental exercise, from pre‐ to post‐HA, the ventilatory equivalent for O 2 (V E /VO 2 ) increased from 28.6 ± 1.0 to 30.2 ± 1.0 ( p = 0.06), whereas the ventilatory equivalent for CO 2 (V E /VCO 2 ) showed no change (29.6 ± 0.8 vs 29.8 ± 2.0, p = 0.37). These preliminary data suggest that active HA increases ventilatory responses independently of an exercise training effect. Supported by NSERC, Canadian Foundation for Innovation. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1096/fasebj.24.1_supplement.991.15 |
| الاتاحة: |
http://dx.doi.org/10.1096/fasebj.24.1_supplement.991.15 |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: |
edsbas.DD642299 |
| قاعدة البيانات: |
BASE |