Influence of the Thermal Environment on Work Rate and Physiological Strain during a UCI World Tour Multistage Cycling Race
| العنوان: | Influence of the Thermal Environment on Work Rate and Physiological Strain during a UCI World Tour Multistage Cycling Race |
|---|---|
| المؤلفون: | JULIEN D. PÉRIARD, MATHEW G. WILSON, SAMUEL T. TEBECK, JAMES B. GILMORE, JAMIE STANLEY, OLIVIER GIRARD |
| المساهمون: | Périard, Julien D, Wilson, Mathew G, Tebeck, Samuel T, Gilmore, James B, Stanley, Jamie, Girard, Olivier |
| المصدر: | Medicine & Science in Sports & Exercise. 55:32-45 |
| بيانات النشر: | Ovid Technologies (Wolters Kluwer Health), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | heat stress, Core temperature, perceived exertion, heart rate, Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine, exertional heat illness |
| الوصف: | Refereed/Peer-reviewed Purpose: This study aimed to characterize the thermal and cardiovascular strain of professional cyclists during the 2019 Tour Down Under and determine the associations between thermal indices and power output, and physiological strain. Methods: Gastrointestinal temperature (Tgi), heart rate (HR), and power output were recorded during the six stages (129–151.5 km) of the Tour Down Under in ≤22 male participants. Thermal indices included dry-bulb, black-globe, wet-bulb, and wet-bulb-globe (WBGT) temperature; relative humidity (RH), Heat Index; Humidex; and universal thermal climate index. The heat stress index (HSI), which reflects human heat strain, was also calculated. Results: Dry-bulb temperature was 23°C–37°C, and RH was 18%–72% (WBGT: 21°C–29°C). Mean Tgi was 38.2°C–38.5°C, and mean peak Tgi was 38.9°C–39.4°C, both highest values recorded during stage 3 (WBGT: 27°C). Peak individual Tgi was ≥40.0°C in three stages and ≥39.5°C in 14%–33% of cyclists in five stages. Mean HR was 131–147 bpm (68%–77% of peak), with the highest mean recorded in stage 3 (P ≤ 0.005). Mean power output was 180–249 W, with the highest mean recorded during stage 4 (P < 0.001; 21°C WBGT). The thermal indices most strongly correlated with power output were black-globe temperature (r = −0.778), RH (r = 0.768), universal thermal climate index (r = −0.762), and WBGT (r = −0.745; all P < 0.001). Mean Tgi was correlated with wet-bulb temperature (r = 0.495), HSI (r = 0.464), and Humidex (r = 0.314; all P < 0.05), whereas mean HR was most strongly correlated with HSI (r = 0.720), along with Tgi (r = 0.599) and power output (r = 0.539; all P < 0.05). Conclusions: Peak Tgi reached 40.0°C in some cyclists, although most remained |
| تدمد: | 1530-0315 0195-9131 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::848a58e9a713667c8912bf3294560664 https://doi.org/10.1249/mss.0000000000003028 |
| رقم الأكسشن: | edsair.doi.dedup.....848a58e9a713667c8912bf3294560664 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15300315 01959131 |
|---|