長時間筋作業に伴うPWC120,PWC150及びPWC170で表わした作業容量の変動

大中 忠勝, 檜木 暢雄, 橋本 昭夫, 高崎 裕治, 山崎 昌広, 志水 巌

doi:10.1537/ase1911.85.159

The purpose of this investigation is to study the relations between the physical working capacity and rectal temperature during muscular exercise. Subjects were six healthy male young adults (Table 1). 60 minutes bicycle exercises were carried out at work rates requiring 30, 40, 50 and 60% of the subjects' maximal oxygen uptake. Heart rate and rectal temperature were measured every ten minutes during the works. Rectal temperatures ranged between 36.95°C and 39.00°C while exercising (Table 2) and were classified into five groups (-37.35°C, 37.36-37.70°C, 37.71-38.05°C, 38.06-38.40°C, 38.41°C-). PWC₁₂₀, PWC₁₅₀, and PWC₁₇₀ were calculated from the regression equations of work rate on heart rate at their respective rectal temperature groups (Table 3). It was observed that PWC150 and PWC170 had a decreasing tendency at the higher rectal temperatures. Analysis of variance confirmed that the rectal temperature effect was nearly significant (Table 4). This result means that the body temperature and working time have to be taken into consideration in evaluating to physical working capacity at least by means of using the relationship between heart rate and work rate.

長時間筋作業に伴うPWC<sub>120</sub>,PWC<sub>150</sub>及びPWC<sub>170</sub>で表わした作業容量の変動

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