Impaired muscle glycogen resynthesis after eccentric exercise
Costill, D.L., Pascoe, D.D., Fink, W.J., Robergs, R.A., Barr, S.I., & Pearson, D. (1990) Impaired muscle glycogen resynthesis after eccentric exercise. Journal of Applied Physiology, 69(1), pp. 46-50.
Eight men performed 10 sets of 10 eccentric contractions of the knee extensor muscles with one leg [eccentrically exercised leg (EL)]. The weight used for this exercise was 120% of the maximal extension strength. After 30 min of rest the subjects performed two-legged cycling [concentrically exercised leg (CL)] at 74% of maximal O2 uptake for 1 h. In the 3 days after this exercise four subjects consumed diets containing 4.25 g CHO/kg body wt, and the remainder were fed 8.5 g CHO/kg. All subjects experienced severe muscle sorenes and edema in the quadriceps muscles of the eccentrically exercised leg. Mean (± SE) resting serum creatine kinase increased from a preexercise level of 57 ± 3 to 6,988 ± 1,913 U/l on the 3rd day of recovery. The glycogen content (mmol/kg dry wt) in the vastus lateralis of CL muscles averaged 90, 395, and 592 mmol/kg dry wt at 0, 24, and 72 h of recovery. The EL muscle, on the other hand, averaged 168, 329, and 435 mmol/kg dry wt at these same intervals. Subjects receiving 8.5 g CHO/kg stored significantly more glycogen than those who were fed 4.3 g CHO/kg. In both groups, however, significantly less glycogen was stored in the EL than in the CL.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
|Item Type:||Journal Article|
|Keywords:||glycogen, article; carbohydrate diet; exercise; histology; human cell; human experiment; male; muscle metabolism; normal human; priority journal, Adult; Dietary Carbohydrates; Exercise; Glycogen; Human; Male; Muscle Contraction; Muscles; Support, Non-U.S. Gov't; Time Factors|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
|Deposited On:||18 Jul 2016 23:50|
|Last Modified:||18 Jul 2016 23:50|
Repository Staff Only: item control page