title: Postexercise carbohydrate-protein- antioxidant ingestion decreases plasma creatine kinase and muscle soreness.
abstract: The authors investigated the effects of postexercise carbohydrate-protein-antioxidant (CHO+P+A) ingestion on plasma creatine kinase (CK), muscle soreness, and subsequent cross-country race performance. Twenty-three runners consumed 10 mL/kg body weight of CHO or CHO+P+A beverage immediately after each training session for 6 d before a cross-country race. After a 21-d washout period, subjects repeated the protocol with the alternate beverage. Postintervention CK (223.21 +/- 160.71 U/L; 307.3 +/- 312.9 U/L) and soreness (medians = 1.0, 2.0) were significantly lower after CHO+P+A intervention than after CHO, despite no differences in baseline measures. There were no overall differences in running performance after CHO and CHO+P+A interventions. There were, however, significant correlations between treatment differences and running mileage, with higher mileage runners having trends toward improved attenuations in CK and race performance after CHO+P+A intervention than lower mileage runners. We conclude that muscle damage incurred during training was attenuated with postexercise CHO+P+A ingestion, which could lead to performance improvements in high-mileage runners.
authors: Department of Kinesiology, James Madison University, Harrisonburg, VA 22807, USA.
authors: Nicholas D
authors: ND
authors: Luden
authors: Michael J
authors: MJ
authors: Saunders
authors: M Kent
authors: MK
authors: Todd
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000008:administration & dosage*; D003402:Creatine Kinase / Q000097:blood*; D018592:Cross-Over Studies; D004040:Dietary Carbohydrates / Q000008:administration & dosage*; D004044:Dietary Proteins / Q000008:administration & dosage*; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000201:enzymology / Q000293:injuries / Q000502:physiology*; D009747:Nutritional Physiological Phenomena; D010101:Oxygen Consumption; D012420:Running / Q000502:physiology*
chemical_list: D000975:Antioxidants; D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D003402:Creatine Kinase