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Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training.
Eur J Appl Physiol. 2012 Jul; 112(7):2693-702.EJ

Abstract

The purpose of this study was to investigate associations between acute exercise-induced hormone responses and adaptations to high intensity resistance training in a large cohort (n = 56) of young men. Acute post-exercise serum growth hormone (GH), free testosterone (fT), insulin-like growth factor (IGF-1) and cortisol responses were determined following an acute intense leg resistance exercise routine at the midpoint of a 12-week resistance exercise training study. Acute hormonal responses were correlated with gains in lean body mass (LBM), muscle fibre cross-sectional area (CSA) and leg press strength. There were no significant correlations between the exercise-induced elevations (area under the curve-AUC) of GH, fT and IGF-1 and gains in LBM or leg press strength. Significant correlations were found for cortisol, usually assumed to be a hormone indicative of catabolic drive, AUC with change in LBM (r = 0.29, P < 0.05) and type II fibre CSA (r = 0.35, P < 0.01) as well as GH AUC and gain in fibre area (type I: r = 0.36, P = 0.006; type II: r = 0.28, P = 0.04, but not lean mass). No correlations with strength were observed. We report that the acute exercise-induced systemic hormonal responses of cortisol and GH are weakly correlated with resistance training-induced changes in fibre CSA and LBM (cortisol only), but not with changes in strength.

Authors+Show Affiliations

Exercise Metabolism Research Group, Department of Kinesiology, McMaster University, 1280 Main St. West, Hamilton, ON, L8S 4K1, Canada.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22105707

Citation

West, Daniel W D., and Stuart M. Phillips. "Associations of Exercise-induced Hormone Profiles and Gains in Strength and Hypertrophy in a Large Cohort After Weight Training." European Journal of Applied Physiology, vol. 112, no. 7, 2012, pp. 2693-702.
West DW, Phillips SM. Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training. Eur J Appl Physiol. 2012;112(7):2693-702.
West, D. W., & Phillips, S. M. (2012). Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training. European Journal of Applied Physiology, 112(7), 2693-702. https://doi.org/10.1007/s00421-011-2246-z
West DW, Phillips SM. Associations of Exercise-induced Hormone Profiles and Gains in Strength and Hypertrophy in a Large Cohort After Weight Training. Eur J Appl Physiol. 2012;112(7):2693-702. PubMed PMID: 22105707.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training. AU - West,Daniel W D, AU - Phillips,Stuart M, Y1 - 2011/11/22/ PY - 2011/03/20/received PY - 2011/11/09/accepted PY - 2011/11/23/entrez PY - 2011/11/23/pubmed PY - 2012/10/30/medline SP - 2693 EP - 702 JF - European journal of applied physiology JO - Eur. J. Appl. Physiol. VL - 112 IS - 7 N2 - The purpose of this study was to investigate associations between acute exercise-induced hormone responses and adaptations to high intensity resistance training in a large cohort (n = 56) of young men. Acute post-exercise serum growth hormone (GH), free testosterone (fT), insulin-like growth factor (IGF-1) and cortisol responses were determined following an acute intense leg resistance exercise routine at the midpoint of a 12-week resistance exercise training study. Acute hormonal responses were correlated with gains in lean body mass (LBM), muscle fibre cross-sectional area (CSA) and leg press strength. There were no significant correlations between the exercise-induced elevations (area under the curve-AUC) of GH, fT and IGF-1 and gains in LBM or leg press strength. Significant correlations were found for cortisol, usually assumed to be a hormone indicative of catabolic drive, AUC with change in LBM (r = 0.29, P < 0.05) and type II fibre CSA (r = 0.35, P < 0.01) as well as GH AUC and gain in fibre area (type I: r = 0.36, P = 0.006; type II: r = 0.28, P = 0.04, but not lean mass). No correlations with strength were observed. We report that the acute exercise-induced systemic hormonal responses of cortisol and GH are weakly correlated with resistance training-induced changes in fibre CSA and LBM (cortisol only), but not with changes in strength. SN - 1439-6327 UR - https://www.unboundmedicine.com/medline/citation/22105707/Associations_of_exercise_induced_hormone_profiles_and_gains_in_strength_and_hypertrophy_in_a_large_cohort_after_weight_training_ L2 - https://dx.doi.org/10.1007/s00421-011-2246-z DB - PRIME DP - Unbound Medicine ER -