著者
新矢 博美 芳田 哲也 高橋 英一 常岡 秀行 中井 誠一
出版者
日本体力医学会
雑誌
体力科學 (ISSN:0039906X)
巻号頁・発行日
vol.52, no.1, pp.75-88, 2003-02-01
被引用文献数
7 5

The effects of fencing uniforms (U) on thermoregulatory responses were analyzed in both practical field investigation (PFI) and laboratory experiment (LE). In PFI, six fencers (college-aged) performed regular fencing practice wearing U and wearing a short-sleeved shirt and pants (T) in summer. Rectal temperature (Tr), chest skin temperature (Tch), mask temperature (Tmk), heart rate (HR) and sweat rate (SR) were measured during fencing practice. In LE, seven male college-aged subjects performed three sessions of 20-min cycling at light intensity (250 W/m^2) in a room temperature maintained at 28 WBGT (wet bulb globe temperature). Esophageal temperature (Tes), mean skin temperature (Tsk), mean body temperature (Tb), HR, and SR were measured during exercise wearing U and in a semi-nude condition (N). In both PFI and LE, increases in Tch, Tsk, Tb, Tes, Tr and SR were significantly (p<0.001) greater when wearing U than when wearing T and N. In PFI, the maximal value of Tr correlated significantly with the maximal values of Tch (r=0.513, p<0.001) and SR (r=0.635, p<0.001) during practice wearing U and T. In LE, positive correlations between Tsk and Tes (r=0.797, p<0.001), and between Tb and SR (r=0.658, p<0.02) were found at the end of exercise wearing U and N. In PFI, although the Tsk decreased within a few minutes of a decrease in Tmk, a significant relationship between the decrease in Tmk and Tsk or Tr was not observed during fencing practice. These results demonstrate that when wearing U, a higher skin temperature induces core temperature elevation, and higher skin and core temperatures are associated with increases in SR and HR during exercise in a hot environment. Thus, wearing light clothing during exercise, and taking off the fencing jacket and mask during rest periods would be recommended to reduce the heat stress during fencing practice in hot environments.
著者
長谷 弘記 中村 良一 海老根 東雄 赤池 真 露木 和夫 米田 一平
出版者
日本体力医学会
雑誌
体力科學 (ISSN:0039906X)
巻号頁・発行日
vol.39, no.5, pp.341-349, 1990-10-01
被引用文献数
1

A study was performed to evaluate the physical exsrcise characterristics of 29 Japanese elite judo athletes by treadmill exercise test. Functional aerobic impairment (FAI), heat rate impairment (HRI) and peripheral circulatory impairment (PCI) in the judo athletes were not significantly different from those of normal sendntary subjects. Howevar, myocardaial aerobic impairment (MAI) was lower than in normal sedentary subjects. %V^O_2max at the anaerobic threahold (AT) was 57.5±3.3% in male, and 57.0±4.3% in female judo athletes. %HRmax at AT was 72.4±3.8% in males, and 75.2±5.3% in females. These findings suggest that functional aerobic capacity and peripheral circulatory function in Japanese elite judo athletes are not significantly different from those of normal sedentary subject, but that judo athletes have high left ventricular function. The blood biochemical profile and urinalysis date revealed that values of muscle injury enzymes plasma uric acid and cholesterol were increased with relatively high freqency in elite judo athletes. Similar data were also obtained in individuals with suspected diabetic nephropathy and rhabdomyolysis.