title: Effect of physical training on immunoreactive gamma-glutamyltransferase in human plasma.
abstract: The effects of 10-week physical training on both the activity and concentration of gamma-glutamyltransferase (gamma-GT) in plasma were investigated on 7 sedentary healthy male students. The training consisted of running over 5 km, 6 times/week. The maximal oxygen uptake (Vo2max) and 12-min field performance increased significantly after training, from 43.5 and 2,683.7 to 48.1 ml.kg-1.min-1 and 2,931.1 m, respectively. After training the resting plasma gamma-GT concentration decreased to half, whereas the gamma-GT activity did not vary substantially. The training did not affect the response to the Vo2max test of either concentration or activity of gamma-GT. These results may suggest that plasma gamma-GT concentration is useful as an index of the extent of physical training.
mesh_terms: D000293:Adolescent; D000328:Adult; D001769:Blood / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D004798:Enzymes / Q000097:blood; D006801:Humans; D008099:Liver / Q000201:enzymology; D008297:Male; D009132:Muscles / Q000201:enzymology; D009994:Osmolar Concentration; D010101:Oxygen Consumption; D010806:Physical Education and Training; D005082:Physical Exertion; D012146:Rest; D005723:gamma-Glutamyltransferase / Q000276:immunology*
chemical_list: D004798:Enzymes; D005723:gamma-Glutamyltransferase