منابع مشابه
Speed and age: multiple rates of age decline.
There is frequent reference in the literature on aging and performance to the "slowing with age phenomenon". If there truly is one "slowing with age" phenomenon, then all activities requiring speeded performance should decline with age at approximately the same rate. This report compares relative rates of age decline in several speeded physical activities ranging from simple reaction time to lo...
متن کاملAge-Dependent Recombination Rates in Human Pedigrees
In humans, chromosome-number abnormalities have been associated with altered recombination and increased maternal age. Therefore, age-related effects on recombination are of major importance, especially in relation to the mechanisms involved in human trisomies. Here, we examine the relationship between maternal age and recombination rate in humans. We localized crossovers at high resolution by ...
متن کاملChanges in gastric emptying rates with age.
A dual isotope technique which measures simultaneously the emptying of solids and liquids by the stomach was used to study gastric emptying in 35 subjects in the age range 21-84 years, who were all fit, mobile volunteers and were not taking any drugs. Solid and liquid emptying were significantly slower in older subjects, but this finding is unlikely to be of clinical significance because the ch...
متن کاملDirect standardization (age-adjusted death rates).
Most population-based mortality objectives and subobjectives in Healthy People 2000 are tracked using age-adjusted rates from the National Vital Statistics System (appendix table I). The exceptions are deaths from alcohol-related motor vehicle crashes, all motor vehicle crashes, and work-related injuries (objectives 4.1, 9.3, and 10.1), which are monitored with crude death rates from other data...
متن کاملTempo effect on age-specific death rates
It is widely known that shifts of cohort fertility schedule can produce misleading trends in period TFR. This note shows that such a “tempo bias” can occur in age-specific mortality as well: if the age distribution of cohort deaths shifts toward older (younger) ages, the period age-specific death rate is biased downward (upward). 1 Laboratory of Populations, Rockefeller University, 1230 York Av...
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ژورنال
عنوان ژورنال: Deutsches Aerzteblatt Online
سال: 2016
ISSN: 1866-0452
DOI: 10.3238/arztebl.2016.0287b