Archivos de biologia andina最新文献

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[Biological and social aspects of migration of the Andes population]. [安第斯山脉人口迁移的生物和社会方面]。

Archivos de biologia andina Pub Date : 1977-07-01

P T Baker

{"title":"[Biological and social aspects of migration of the Andes population].","authors":"P T Baker","doi":"","DOIUrl":"","url":null,"abstract":"The effect of migration on the biology of human populations is almost unknown. While some studies of populations moving from areas which are poor and without medical care clearly show that movement into more prosperous areas improves general health, these studies fail to show the specific effects of changing physical environments. In the present study migrants from the altiplano of Southern Peru to the adjacent low altitude zones were examined. The data were compared to similar data on migrants from low altitude areas and native low altitude people. Preliminary analysis of the information collected suggested the following: 1. Adult women increase slightly their completed fertility when they move from high to low altitude. Child spacing is particularly decreased but birth sex ratios are not affected. 2. Highland migrants at low altitude produce larger newborns than they do at high altitude and these infants grow more rapidly than high altitude infants. 3. Migrants from high to low altitude suffer more respiratory symptoms than low altitude migrants or lowland natives. 4. Although highland migrants quickly adopt low altitude life styles and diets they do not show the age increases in blood pressure or high levels of serum cholesterol common in lowland natives. On the basis of these findings it is concluded that migration may have some detrimental effects on human health and physical fitness. However, more importantly they show that the specific physical environment in which an individual develops has a significant effect on the health fitness of a migrant to a new environment.","PeriodicalId":76887,"journal":{"name":"Archivos de biologia andina","volume":"7 2","pages":"63-82"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11953218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Congenital malformations in the newborns at high altitude]. [高海拔地区新生儿的先天性畸形]。

Archivos de biologia andina Pub Date : 1977-07-01

R Herrera, J A Li Lora, T H Ingalls, E Marticorena

引用次数: 0

[Hormonal variation during physical exertion at high altitude]. [高海拔体力消耗时的荷尔蒙变化]。

Archivos de biologia andina Pub Date : 1977-07-01

J Sutton, F Garmendia

{"title":"[Hormonal variation during physical exertion at high altitude].","authors":"J Sutton, F Garmendia","doi":"","DOIUrl":"","url":null,"abstract":"The influence of the physical exercise at high altitude on the endocrine function was studied in 8 normal native men of sea level and in 8 natives men of high altitude. The sea level dwellers were studied both, at sea level, during an acute exposure to low barometric pressure and after 3 months of acclimatization to altitudes over 3,500 meters above the sea level. The experiments at high altitude were conducted at an altitude of 4,500 meters above the sea level. Two types of exercise were carried out, sub-maximal and maximal, at fasting state, between 8 and 10 a.m. During an acute exposure to altitude the physical exercise produced a marked rise of glucose, cortisol and growth hormone and a fall in the insulin content of plasma. In the sea level dwellers, acclimatized to altitude during 3 months, an elevation of growth hormone was observed only during maximal physical effort. Marked variation in glucose and cortisol were observed during both types of exercise. This shows that in these subjects some adaptative changes have ocurred but of lesser extent as those observed in altitude natives. In the high altitude native higher basal concentrations of growth hormone and glucagón as well as a lower glucose concentration in blood, were found. During exercise the high altitude dweller showed no significant changes in somatotropin, meanwhile an important elevation of cortisol occurred. These findings indicate that the high altitude native has metabolic and endocrine responses to exercise similar to those found in well fitted atletes of sea level. The exposure to altitude provoked a rise in glucagon concentration directly proportional to the time of exposition ot altitude. The physical exercise did not elucidate any change in the glucagon content of blood.","PeriodicalId":76887,"journal":{"name":"Archivos de biologia andina","volume":"7 2","pages":"83-93"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11953222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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