PMID- 11915776 OWN - NLM STAT- MEDLINE DCOM- 20020910 LR - 20191105 IS - 1526-484X (Print) IS - 1526-484X (Linking) VI - 11 IP - 4 DP - 2001 Dec TI - Comparison of carbohydrate and milk-based beverages on muscle damage and glycogen following exercise. PG - 406-19 AB - This study examined effects of carbohydrate (CHO), milk-based carbohydrate-protein (CHO-PRO), or placebo (P) beverages on glycogen resynthesis, muscle damage, inflammation, and muscle function following eccentric resistance exercise. Untrained males performed a cycling exercise to reduce muscle glycogen 12 hours prior to performance of 100 eccentric quadriceps contractions at 120% of 1-RM (day 1) and drank CHO (n = 8), CHO-PRO (n = 9; 5 kcal/kg), or P (n = 9) immediately and 2 hours post-exercise. At 3 hours post-eccentric exercise, serum insulin was four times higher for CHO-PRO and CHO than P (p < .05). Serum creatine kinase (CK) increased for all groups in the 6 hours post-eccentric exercise (p < .01), with the increase tending to be lowest for CHO-PRO (p < .08) during this period. Glycogen was low post-exercise (33+/-3.7 mmol/kg ww), increased 225% at 24 hours, and tripled by 72 hours, with no group differences. The eccentric exercise increased muscle protein breakdown as indicated by urinary 3-methylhistidine and increased IL-6 with no effect of beverage. Quadriceps isokinetic peak torque was depressed similarly for all groups by 24% 24 hours post-exercise and remained 21% lower at 72 hours (p < .01). In summary, there were no influences of any post-exercise beverage on muscle glycogen replacement, inflammation, or muscle function. FAU - Wojcik, J R AU - Wojcik JR AD - Department of Human Nutrition, Foods, and Exercise at Virginia Polytechnic Institute and State University, Blacksburg 24061, USA. FAU - Walber-Rankin, J AU - Walber-Rankin J FAU - Smith, L L AU - Smith LL FAU - Gwazdauskas, F C AU - Gwazdauskas FC LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Int J Sport Nutr Exerc Metab JT - International journal of sport nutrition and exercise metabolism JID - 100939812 RN - 0 (Cytokines) RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Proteins) RN - 0 (Insulin) RN - 0 (Methylhistidines) RN - 9005-79-2 (Glycogen) RN - EC 2.7.3.2 (Creatine Kinase) RN - MEH8O8Y0H0 (3-methylhistidine) SB - IM MH - Adult MH - Animals MH - *Beverages MH - Creatine Kinase/blood MH - Cytokines/blood MH - Dietary Carbohydrates/*administration & dosage/metabolism MH - Dietary Proteins/*administration & dosage/metabolism MH - Exercise/*physiology MH - Glycogen/*biosynthesis/metabolism MH - Humans MH - Insulin/blood MH - Kinetics MH - Male MH - Methylhistidines/urine MH - Milk MH - Muscle, Skeletal/injuries/*metabolism/pathology EDAT- 2002/03/28 10:00 MHDA- 2002/09/11 10:01 CRDT- 2002/03/28 10:00 PHST- 2002/03/28 10:00 [pubmed] PHST- 2002/09/11 10:01 [medline] PHST- 2002/03/28 10:00 [entrez] AID - 10.1123/ijsnem.11.4.406 [doi] PST - ppublish SO - Int J Sport Nutr Exerc Metab. 2001 Dec;11(4):406-19. doi: 10.1123/ijsnem.11.4.406.