title: Effects of a 10-week conventional strength training program on lower leg muscle performance in adolescent boys compared to adults.
abstract: OBJECTIVE
  The use of resistance training by adolescents has been an area of controversy. The aim of the present work was therefore to evaluate the degree of strength trainability in adolescents compared to adults.
  
  
  METHODS
  Thirteen healthy male adolescents (AL) and eight adults (AD) volunteered to participate in a 10-week training program. Subjects performed supervised exercises for the legs, calf raise, leg curl and leg extension three times a week. Maximal strength, explosive power and anaerobic power were assessed prior and after the 10-week training program.
  
  
  RESULTS
  Significant interaction effects (time * age group) were found only for explosive strength as improvements of squat jump and counter movement jump performance (P<0.05) in favor of the AL group. No between-group changes were found for maximal strength and anaerobic power. However, significant time effects were observed for these parameters within both groups.
  
  
  CONCLUSIONS
  Taken together, adolescents show distinct muscular adaptations by a higher gain in explosive power in response to resistance training when compared to adults. This might be related to peak height velocity (PHV) which is a "sensitive" period of trainability and accelerated adaptation to resistance training in adolescents.
authors: Department of Radiology Innsbruck Medical University, Innsbruck, Austria - dominik.pesta@yale.edu.
authors: D
authors: D
authors: Pesta
authors: A
authors: A
authors: Thaler
authors: F
authors: F
authors: Hoppel
authors: C
authors: C
authors: Macek
authors: M
authors: M
authors: Schocke
authors: M
authors: M
authors: Burtscher
mesh_terms: D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D006801:Humans; D007866:Leg / Q000502:physiology*; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*