title: Ghrelin and glucoregulatory hormone responses to a single circuit resistance exercise in male college students.
abstract: BACKGROUND
  It has been suggested that ghrelin may play a role in growth hormone (GH) secretion to exercise.
  
  
  OBJECTIVE
  The present study was designed to examine the effects of a single bout of circuit resistance exercise on plasma glucose, ghrelin, GH, and c-peptide, and cortisol.
  
  
  METHODS
  Fourteen volunteer male physical education students completed a single bout circuit resistance training (10 exercises, three circuits, and at 60% of 1-RM). Blood samples were collected before, immediately after the exercise, and 24-h following the exercise protocol.
  
  
  RESULTS
  GH, glucose, and c-peptide showed a significant increase immediately after exercise and returned to pre exercise values over time. Plasma ghrelin showed a significant decrease immediately after the exercise and increased significantly 24-h following the exercise.
  
  
  CONCLUSIONS
  In conclusion, a decrease in plasma ghrelin following a single bout of circuit resistance exercise indicates that an increase in GH is not related to plasma ghrelin levels. An acute exercise-induced hyperphagia during the long-recovery was considered.
authors.affiliation: Department of Physical Education and Sport Sciences, University of Tarbiat Modarres, PO Box 14115-39, Tehran, Iran. ghanbari@modares.ac.ir
authors.forename: Abbass
authors.initials: A
authors.lastname: Ghanbari-Niaki
mesh_terms: D000328:Adult; D015444:Exercise; D054439:Ghrelin; D006728:Hormones / Q000502:physiology*; D006801:Humans; D008297:Male; D036361:Peptide Hormones / Q000502:physiology*; D013334:Students
chemical_list: D054439:Ghrelin; D006728:Hormones; D036361:Peptide Hormones