title: Influence of exercise training on tissue chromium concentrations in the rat.
abstract: This study reports on the effects of exercise training on the chromium concentrations in the heart, liver, kidney, and gastrocnemius muscle of normal Sprague-Dawley rats. A pair-fed (to the trained rats' intake) and a preexperimental group were also studied in order to control food intake and to ascertain any age-related influence on tissue chromium levels, respectively. Four groups of animals were examined: exercise-trained, pair-fed, preexperimental, and sedentary control. Chromium determination was performed by flameless atomic absorption spectrophotometry. The results from this study show that exercise training increases while pair-feeding and normal aging both decrease chromium levels in tissues. It is suggested that the male Sprague-Dawley rat adapts to exercise training by enhancing tissue levels of chromium or by simply maintaining the high levels of the element found at a younger age.
mesh_terms: D000375:Aging; D000818:Animals; D001835:Body Weight; D002857:Chromium / Q000378:metabolism*; D005247:Feeding Behavior; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008297:Male; D009132:Muscles / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D010806:Physical Education and Training; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D002857:Chromium