Clijsen, Ron and Allemanm, Alexandra and Baeyens, Jean Pierre and Cabri, Jan and Clarys, Peter (2013) Effects of local body cooling on endurance performance during cycling under warm and humid environmental conditions. In: Book of Abstracts 18th. annual Congress of the European College of Sport Science, 26-29 june, 2013 , Barcelona, Spain.
Full text not available from this repository.Abstract
Introduction Humidity and temperature have an influence on physical and psychological performance. Especially in exhaustive endurance sports, high environmental temperatures can increase body temperature and decrease endurance capacity. To avoid a strong decrease of performance the body must adjust rapidly by increasing heat loss through evaporation, radiation and conduction. The goal of this study was to examine the effect of cooling devices, like vests and wristbands, on the endurance cycling performance in warm and humid environmental conditions. Methods Thirteen young healthy subjects, male (n=2) female (n=11) volunteered in this study. A random, cross-over design was used. Subjects were tested under two different conditions, with cooling and without cooling and performed a 60-minute work out on a bicycle ergometer at 60 % of their maximal capacity, directly followed by a workout at 80 % of their maximal performance until complete exhaustion. Cycle time to exhaustion was determined and used as the independent variable for endurance performance. Every three minutes the following variables were measured: heart rate, skin temperature, body temperature and perceived exhaustion (BORG scale). Environmental temperature (35°C) and relative humidity (44%) were kept constant during the tests. Results Evaluation of the data revealed a significant difference (p = 0.02) in the mean cycle time to exhaustion when subjects were using cooling devices (72.9 ± 8.8 vs. 69.1 ± 5.6). There was no significant effect on the heart rate nor on core temperature, both (p > 0.05). The skin temperature in the chest region was significantly lower during the first 15 minutes of cooling. No differences were found in the individual perception of the exercise intensity with or without cooling (p > 0.05). Discussion Although we did not observe any significant changes in body temperature, heart rate and rated perceived exerction, our preliminary results indicate that wearing a cooling device in the form of a cooling vest can increase the cycling performance in warm and humid environmental conditions. References: Duffield R, Dawson B, Bishop D, Fitzsimons M, Lawrence S. (2003). Br J Sports Med, 37:164‐169. Nybo L. (2007). J App. Physiol, 104:871‐878.
| Item Type: | Article in conference proceedings or Presentation at a conference (Speech) |
|---|---|
| Subjects: | Subjects Allied to Medicine > Anatomy, physiology & pathology > Physiotherapy |
| Department/unit: | Dipartimento economia aziendale, sanità e sociale > Laboratorio di ricerca in riabilitazione |
| Depositing User: | Ron Clijsen |
| Date Deposited: | 23 May 2013 09:56 |
| Last Modified: | 14 May 2021 11:00 |
| URI: | http://repository.supsi.ch/id/eprint/2345 |
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