Physical activity and the "rate of ageing".
D000328:Adult; D000368:Aged; D000375:Aging; D000818:Animals; D004285:Dogs; D004534:Egypt; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D009026:Mortality; D009133:Muscular Atrophy; D051381:Rats; D012723:Sex; D013177:Sports; D014481:United States; D014798:Vital Statistics