Resistance exercise order does not determine postexercise delivery of testosterone, growth hormone, and IGF-1 to skeletal muscle

Appl Physiol Nutr Metab. 2013 Feb;38(2):220-6. doi: 10.1139/apnm-2012-0397. Epub 2012 Dec 6.

Abstract

Does resistance exercise order affect hormone availability? Participants performed arm exercise before and after leg exercise. Hormone delivery was estimated by multiplying brachial artery blood flow and hormone concentrations. Blood flow increased after arm (276%) and leg (193%; both p < 0.001) exercise. Testosterone, growth hormone, and insulin-like growth factor 1 showed with distinct delivery patterns between conditions; however (interactions all p < 0.001), net exposure was similar. The anabolic potential of postexercise hormones was not affected by exercise order.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Blood Flow Velocity
  • Brachial Artery / physiology
  • Exercise / physiology*
  • Gene Expression Regulation / physiology
  • Growth Hormone / metabolism*
  • Humans
  • Insulin-Like Growth Factor I / genetics
  • Insulin-Like Growth Factor I / metabolism*
  • Male
  • Muscle, Skeletal / blood supply*
  • Muscle, Skeletal / physiology
  • Resistance Training
  • Testosterone / metabolism*
  • Time Factors
  • Young Adult

Substances

  • Testosterone
  • Insulin-Like Growth Factor I
  • Growth Hormone