title: Plasma glutamine responses to high-intensity exercise before and after endurance training.
abstract: Glutamine responses to strenuous interval exercise were examined before and after 6 weeks of endurance training. Glutamine measures were obtained before and after the interval exercise sessions and training in untrained males assigned to training (T; n = 10) or control (C; n = 10) groups. Before training, C and T group glutamine progressively decreased (p < 0.05) by 18% and 16%, respectively, by 150-min postinterval exercise. Over the training period C group glutamine did not change, while T group values increased (p < 0.05) by 14%. After training, glutamine again decreased (p < 0.05) by similar percentages (C = 16% and T = 15%) by 150-min postinterval exercise, but the T group recorded higher (p < 0.05) resting and postexercise glutamine concentrations than the C group. Training induced increases in glutamine may prevent the decline in glutamine levels following strenuous exercise falling below a threshold where immune function might be acutely compromised.
authors.affiliation: School of Microbiology, University of Western Australia, Nedlands, Western Australia.
authors.forename: Stephen
authors.initials: S
authors.lastname: Kargotich
authors.forename: Carmél
authors.initials: C
authors.lastname: Goodman
authors.forename: Brian
authors.initials: B
authors.lastname: Dawson
authors.forename: Alan R
authors.initials: AR
authors.lastname: Morton
authors.forename: David
authors.initials: D
authors.lastname: Keast
authors.forename: David J L
authors.initials: DJ
authors.lastname: Joske
mesh_terms: D000328:Adult; D015444:Exercise / Q000502:physiology*; D005973:Glutamine / Q000097:blood*; D006801:Humans; D008297:Male; D010806:Physical Education and Training / Q000379:methods*; D010807:Physical Endurance / Q000502:physiology
chemical_list: D005973:Glutamine