| Autor: |
Moore A; Department of Health Sciences, Central Washington University, Ellensburg, WA, USA., Pritchett KL; Department of Health Sciences, Central Washington University, Ellensburg, WA, USA., Pritchett RC; Department of Health Sciences, Central Washington University, Ellensburg, WA, USA., Broad E; United States Olympic Committee, Chula Vista, CA, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
International journal of exercise science [Int J Exerc Sci] 2021 Apr 01; Vol. 14 (2), pp. 19-32. Date of Electronic Publication: 2021 Apr 01 (Print Publication: 2021). |
| Abstrakt: |
Athletes with cervical level spinal cord injuries (SCI) have an impaired ability to thermoregulate during exercise, leading to an increased core temperature (T core ) due to a decrease in sweat response. Elevated T core may result in premature onset of fatigue and decreased athletic performance. Therefore, precooling techniques that decrease T core before exercise may increase the storage capacity for metabolic heat production, thereby delaying the time before reaching a critically high T core . The purpose of this study was to investigate the effects of pre-exercise ice slurry ingestion as a precooling method in elite athletes with SCI during a wheelchair rugby match simulation. Employing a field-based, counterbalanced-design, participants were administered 6.8 g/kg of room temperature (PLB) or ice slurry (IS) beverage during a 20-minute precooling period, before engaging in a 50 and 60 minute on-court training session on day 1 and 2, respectively. Physiological measures, including T core and heart rate, and perceptual measures including gastrointestinal and thermal comfort, and rating of perceived exertion, were monitored throughout precooling (minutes 10, 20) and exercise (minutes 10-60). IS had a large effect on T core at the midpoint of exercise on day 1 (minute 30) (ES=0.73) and 2 (minute 40) (ES=1.17). Independent samples T-tests revealed significant differences in the perception of thermal comfort between IS and PLB at the midpoint of exercise on day 1 (minute 30) ( p =0.04), but not day 2 (minute 40) ( p =0.05), indicating that IS may help participants to feel cooler during exercise. Although further research is warranted, pre-exercise ice slurry ingestion may provide an effective means for delaying an increase in T core in some athletes with SCI during a wheelchair rugby match. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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