[Warming-up under cold environment].
Warming up procedures in the many antecedent reports, are almost under normal ambient temperature and they do not treat the warming up under low temperature. The purpose of this study was to investigate the effects of warming up by intensity and time in submaximal treadmill exercise (90% VO2max intensity during 10 minutes) on physiological parameters under cold environment in climate chamber (room temperature: 10 degrees C, relative humidity: 70%, wind velocity: under 0.2 m/sec). Eight trained collegiate basic skiers performed main exercise for 5 minutes after the following warming up conditions: NoW-up (no warming up), W50-15 (50% VO2max intensity 15 minutes), W70-15(70% VO2max intensity 15 minutes), W50-30(50% VO2max intensity 30 minutes) or W70-30(70% VO2max intensity 30 minutes). It was concluded that the most effective intensity and time of warming up in these conditions were 50% VO2max intensity and 30 minutes duration, that is, rather low intensity and longer duration time. It was suggested that a warming up with a high intensity and short duration was effectless under cold.
Takahashi
H
H
Department of Hygiene and Preventive Medicine, Fukushima Medical College, Japan.
Tanaka
M
M
Morita
Y
Y
Igawa
S
S
Kita
H
H
D000328:Adult; D001833:Body Temperature Regulation; D003080:Cold Temperature; D015444:Exercise / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D013697:Thermosensing