Capillary increase in the skeletal muscle of trained young and adult rats.
1. Capillaries in skeletal muscle were studied before and after physical training by prolonged swimming, in young and adult rats. 2. The mean area of striated muscle fibres was unchanged in both young and adult rats after training. 3. Training increased the capillary vasculature of skeletal muscle in both young and adult rats, but proportionally less in the adults.
D000367:Age Factors; D000818:Animals; D001835:Body Weight; D002196:Capillaries / Q000502:physiology; D006321:Heart / Q000033:anatomy & histology; D008297:Male; D009132:Muscles / Q000098:blood supply*; D009929:Organ Size; D005082:Physical Exertion; D051381:Rats