| Project/Area Number |
05680067
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
体育学
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| Research Institution | Hokkaido University |
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Principal Investigator |
MORIYA Kiyoshi Hokkaido University, Faculty of Education, Professor, 教育学部, 教授 (40000939)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAGAWA Koya Hokkaido University, Faculty of Education, Professor, 教育学部, 教授 (50001798)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1994: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1993: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | Cold-induced Vasodilatation / Thermoregulatory Reaction by Cold / Maximal Oxygen Consumption / Matured Women / Menstrual Cycle / Endurance Physical Fitness / Protective Physical Fitness / 体脂肪率 |
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| Research Abstract |
Influence of menstrual cycle on thermoregulatory reactions induced by cold and endurance physical fitness were studied among matured women, between 20ies and 50ies. Bigger periferal cold tolerance expressed as cold-induced vasodilatation (CIVD) of finger in follicular (F) than in luteal (L) phase was observed 5 among 10 subjects in 20ies, 4 among 5 subjects in 30ies and 4 among 5 subjects in 40 ies. So, bigger CIVD in F phase was in elder as compared to younger female subjects. Greater endurance physical fitness expressed as maximal oxygen consumption (VO_2max/kg b.wt.) in F than in L phase was observed 4 among 10 subjects in 20ies, 2 among 5 subjects in 30ies and 2 among 5 subjects in 40 ies. In a case of VO_2max/kg b.wt., there is no big difference between both F and L phases depending on age of female subjects. Average value of CIVD and VO_2max/kg did not differ between both phases in the menstrual cycle in 20,30 and 40ies' women. CIVD and VO_2max/kg of 4 subjects in 50ies who were in menopause were measured two times in a month. Those values also showed a difference in each measure. CIVD of 20ies was smaller than those of elder subjects although VO_2max/kg was larger in younger than elder subjects. The difference of CIVD and VO_2max/kg between F and L Phase of 20,30 and 40ies or first and second measure of 50ies (DELTACIVD,DELTAVO_2max/kg) showed positive correlation (P=0.05). Other factor (s) than sex hormones might affect to both CIVD and VO_2max/kg of matured wemen. Thermoreguratory reactions (tympanic and finger (T_<flnger>) temperatures, mean skin temperaure (T_<sk>), skin conductance (K_b) and heat production) were measured in two 20ies' subjects who were higher CIVD and VO_2max/kg in L phase, exposed cold air for 60 min. Theyshowed higher T_<sk> and heat production and lower T_<flnger> and K_b in L than F phase.
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