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Int J Sports Med 2014; 35(05): 392-398
DOI: 10.1055/s-0033-1353146
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Physiological Responses in Alpine Skiers during On-Snow Training Simulation in the Cold

E. Suzuki
1   Laboratory for Exercise Physiology and Biomechanics, Graduate School of Health and Sports Sciences, Chukyo university, Toyota, Japan
,
T. Ohya
1   Laboratory for Exercise Physiology and Biomechanics, Graduate School of Health and Sports Sciences, Chukyo university, Toyota, Japan
,
R. Ito
2   Department of Economics, Nihon Fukushi University, Chita-gun, Japan
,
T. Matsumoto
1   Laboratory for Exercise Physiology and Biomechanics, Graduate School of Health and Sports Sciences, Chukyo university, Toyota, Japan
,
K. Kitagawa
1   Laboratory for Exercise Physiology and Biomechanics, Graduate School of Health and Sports Sciences, Chukyo university, Toyota, Japan
› Author Affiliations
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Publication History



accepted after revision 05 July 2013

Publication Date:
07 November 2013 (online)

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Abstract

This study examined the physiological responses to cold stimulus during intermittent high-intensity exercise simulating on-snow alpine ski training. 7 male alpine skiers performed intermittent high-intensity exercises composed of 4 bouts of cycling exercise at 140% V˙O2max intensity for 30 s with 10-min rests on a cycle ergometer in cold (1°C) and control (22°C) conditions. The subjects wore racing suits, middle layers and half pants designed for alpine skiers. Rectal temperature and mean skin temperature were lower in the cold condition than in the control condition (36.8±0.5 vs. 37.1±0.1°C and 28.4±0.6 vs. 33.3±0.6°C, respectively). Oxygen consumption during rests and the last 2 bouts of exercise was higher in the cold condition than in the control condition. Although plasma noradrenaline and serum triglyceride were higher in the cold condition than in the control condition, plasma glucose, adrenaline and serum glycerol were lower. Serum free fatty acid and plasma lactate concentrations did not differ significantly between the 2 conditions. These results indicate that a cold stimulus affects body temperature and energy metabolism and may lead to a decrease in exercise capacity in alpine skiers during on-snow training.

Key words

cold environments - thermoregulation - energy metabolism - intermittent high-intensity exercise - alpine skiing
 

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