Hormonal responses to consecutive days of heavy-resistance exercise with or without nutritional supplementation

William J. Kraemer, Jeff S. Volek, Jill A. Bush, Margot Putukian, Wayne J. Sebastianelli

Research output: Contribution to journalArticle

135 Citations (Scopus)

Abstract

Nine resistance-trained men consumed either a protein-carbohydrate supplement or placebo for 1 wk in a crossover design separated by 7 days. The last 3 days of each treatment, subjects performed resistance exercise. The supplement was consumed 2 h before and immediately after the workout, and blood was obtained before and after exercise (0, 15, 30, 45, and 60 min postexercise). Lactate, growth hormone, and testosterone were significantly (P ≤ 0.05) elevated immediately postexercise. The lactate response was significantly lower during supplementation on days 2 and 3. Growth hormone and prolactin responses on day 1 were significantly higher during supplementation. After exercise, testosterone declined below resting values during supplementation. Cortisol decreased immediately postexercise on day 1; the response was diminished on days 2 and 3. Glucose and insulin were significantly elevated by 30 min during supplementation and remained stable during placebo. Insulin-like growth factor-I was higher during supplementation on days 2 and 3. These data indicate that protein- carbohydrate supplementation before and after training can alter the metabolic and hormonal responses to consecutive days of heavy-resistance exercise.

Original languageEnglish (US)
Pages (from-to)1544-1555
Number of pages12
JournalJournal of Applied Physiology
Volume85
Issue number4
StatePublished - Oct 1 1998

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Exercise
Growth Hormone
Testosterone
Lactic Acid
Placebos
Carbohydrates
Insulin-Like Growth Factor I
Prolactin
Cross-Over Studies
Hydrocortisone
Proteins
Insulin
Glucose
Therapeutics

All Science Journal Classification (ASJC) codes

  • Physiology
  • Physiology (medical)

Cite this

Kraemer, William J. ; Volek, Jeff S. ; Bush, Jill A. ; Putukian, Margot ; Sebastianelli, Wayne J. / Hormonal responses to consecutive days of heavy-resistance exercise with or without nutritional supplementation. In: Journal of Applied Physiology. 1998 ; Vol. 85, No. 4. pp. 1544-1555.
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Hormonal responses to consecutive days of heavy-resistance exercise with or without nutritional supplementation. / Kraemer, William J.; Volek, Jeff S.; Bush, Jill A.; Putukian, Margot; Sebastianelli, Wayne J.

In: Journal of Applied Physiology, Vol. 85, No. 4, 01.10.1998, p. 1544-1555.

Research output: Contribution to journalArticle

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