Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise

G. G. Haff, A. J. Koch, J. A. Potteiger, K. E. Kuphal, L. M. Magee, S. B. Green, J. J. Jakicic

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

The effects of carbohydrate (CHO) supplementation on muscle glycogen and resistance exercise performance were examined with eight highly resistance trained males (mean ± SEM, age:24.3 ± 1.1 years, height: 171.9 ± 2.0 cm, body mass: 85.7 ± 3.5 kg; experience 9.9 ± 2.0 years). Subjects participated in a randomized, double blind protocol with testing sessions separated by 7 days. Testing consisted of an initial isokinetic leg exercise before and after an isotonic resistance exercise (IRT) session consisting of 3 leg exercises lasting ~39 min. Subjects consumed a CHO (1.0 g CHO · kg body mass-1) or placebo treatment (PLC), prior to and every 10-min (0.5 g CHO · kg body mass-1) during the IRT. Muscle tissue was obtained from the m vastus lateralis after a supine rest (REST) immediately after the initial isokinetic test (POST-ISO) and immediately after the IRT (POST-IRT). The CHO treatment elicited significantly less muscle glycogen degradation from the POST-ISO to POST-IRT (126.9 ± 6.5 to 109.7 ± 7.1 mmol · kg wet weight-1) compared to PLC (121.4 ± 8.1 to 88.3 ± 6.0 mmol · kg wet weight-1). There were no differences in isokinetic performance between the treatments. The results of this investigation indicate that the consumption of a CHO beverage can attenuate the decrease in muscle glycogen associated with isotonic resistance exercise but does not enhance the performance of isokinetic leg exercise.

Original languageEnglish (US)
Pages (from-to)326-339
Number of pages14
JournalInternational Journal of Sport Nutrition
Volume10
Issue number3
StatePublished - 2000
Externally publishedYes

Fingerprint

strength training
Glycogen
glycogen
Carbohydrates
carbohydrates
Muscles
Leg
muscles
Placebos
legs
exercise
Weights and Measures
Beverages
Quadriceps Muscle
Therapeutics
placebos
testing
muscle tissues
beverages
degradation

Keywords

  • Free fatty acids
  • Glucose
  • Isokinetics
  • Lactate
  • Torque
  • Work

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Endocrinology
  • Public Health, Environmental and Occupational Health
  • Food Science

Cite this

Haff, G. G., Koch, A. J., Potteiger, J. A., Kuphal, K. E., Magee, L. M., Green, S. B., & Jakicic, J. J. (2000). Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise. International Journal of Sport Nutrition, 10(3), 326-339.

Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise. / Haff, G. G.; Koch, A. J.; Potteiger, J. A.; Kuphal, K. E.; Magee, L. M.; Green, S. B.; Jakicic, J. J.

In: International Journal of Sport Nutrition, Vol. 10, No. 3, 2000, p. 326-339.

Research output: Contribution to journalArticle

Haff, GG, Koch, AJ, Potteiger, JA, Kuphal, KE, Magee, LM, Green, SB & Jakicic, JJ 2000, 'Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise', International Journal of Sport Nutrition, vol. 10, no. 3, pp. 326-339.
Haff, G. G. ; Koch, A. J. ; Potteiger, J. A. ; Kuphal, K. E. ; Magee, L. M. ; Green, S. B. ; Jakicic, J. J. / Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise. In: International Journal of Sport Nutrition. 2000 ; Vol. 10, No. 3. pp. 326-339.
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