title: Comparison of the Effects of Resistance Exercise Orders on Number of Repetitions, Serum IGF-1, Testosterone and Cortisol Levels in Normal-Weight and Obese Men.
abstract: BACKGROUND
  Exercise order affects repetition performance and acute hormonal responses to resistance training (RT) programs.
  
  
  OBJECTIVE
  The purpose of this study was to compare the acute effects of two different resistance exercise orders (REO) on number of repetitions and serum Insulin-like Growth Factor-1 (IGF-1), testosterone and cortisol levels in normal-weight and obese men.
  
  
  METHODS
  25 untrained college-aged men were assigned to either obese (n = 11) or normal-weight (n = 15) groups. Subjects performed two REO protocols in 2 exercise groups. In the first group subjects began with large-muscle group and progressed to small-muscle group (Protocol A), while in the other group subjects performed the same exercise but in reverse sequence (Protocol B). Each activity was performed in 3 consecutive sets of 10 repetitions maximum to near fatigue.
  
  
  RESULTS
  REOs did not affect number of repetitions in none of the groups. The average rating of perceived exertion was higher for protocol B in both groups. IGF-1 and testosterone increased immediately post exercise for both protocols and in both groups, however immediately post exercise increase in IGF-1 and testosterone were lower in obese group. Cortisol response to REO was weaker in obese group.
  
  
  CONCLUSIONS
  Performing large muscle group exercises first in RE training and progressing to small muscle group produced greater anabolic hormonal response relative to reverse sequence in normal-weight young adult men. Anabolic hormonal response to REOs was blunted in the obese group.
authors.affiliation: Department of Physical Education and Sport Sciences, University of Kurdistan, Sanandaj, IR Iran.
authors.forename: Dariush
authors.initials: D
authors.lastname: Sheikholeslami-Vatani
authors.affiliation: Department of Physiology, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, IR Iran; Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, IR Iran.
authors.forename: Slahadin
authors.initials: S
authors.lastname: Ahmadi
authors.affiliation: Department of Physical Education and Sport Sciences, University of Kurdistan, Sanandaj, IR Iran.
authors.forename: Rashad
authors.initials: R
authors.lastname: Salavati
keywords: Acute Exercise; Hormone Responses in Exercise; Obese; Strength Training