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Investigation on factors affecting thermoregulatory reactions induced by cold and endurance physical fitness of matured women

影响成熟女性寒冷体温调节反应及耐力体质的因素调查

基本信息

批准号：
05680067
负责人：
MORIYA Kiyoshi
金额：
$ 1.15万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680067/
关键词：
Cold-induced Vasodilatation Thermoregulatory Reaction by Cold Maximal Oxygen Consumption Matured Women Menstrual Cycle Endurance Physical Fitness Protective Physical Fitness 体脂肪率

项目摘要

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.

研究了月经周期对20 ~ 50岁成熟女性低温体温调节反应和耐力体能的影响。20岁时10例中有5例，30岁时5例中有4例，40岁时5例中有4例，卵泡期(F)手指冷致血管舒张（CIVD）表现为比黄体期(L)大。因此，与年轻女性受试者相比，年龄较大的女性受试者在F期的CIVD较大。以最大耗氧量（VO_2max/kg b.wt.）表示的耐力体能在F期比L期更大，10名受试者中有4名在20岁，5名受试者中有2名在30岁，5名受试者中有2名在40岁。在VO_2max/kg b.wt的情况下。F期和L期随女性被试年龄的变化差异不大。20岁、30岁和40岁女性月经周期的平均值CIVD和VO_2max/kg无显著差异。对50例绝经期4例受试者每月进行2次CIVD和VO_2max/kg测定。这些数值在每个测量中也显示出差异。20岁年龄组的CIVD小于老年组，但VO_2max/kg较老年组大。F期和L期20、30、40、50期和1、2期的CIVD和VO_2max/kg差异（DELTACIVD、DELTAVO_2max/kg）呈正相关（P=0.05）。性激素以外的其他因素也可能影响成熟女性的CIVD和VO_2max/kg。对2名20多岁的CIVD和VO_2max/kg较高的L相受试者，暴露于冷空气60min，测量其热调节反应（鼓室和手指温度（T_<手指>）、平均皮肤温度（T_<sk>）、皮肤电导率（K_b）和产热）。与F相相比，L相的T_<sk>和产热较高，T_< flinger >和K_b较低。