title: Effect of strength training on regional hypertrophy of the elbow flexor muscles.
abstract: Muscle hypertrophy is the main structural adaptation to strength training. We investigated the chronic effects of strength training on muscle hypertrophy in different regions of the elbow flexor muscles.
  
  
  
  Eleven untrained men (21.8 ± 1.62 years) underwent magnetic resonance imaging to determine the proximal, medial, distal, and mean cross-sectional areas (CSA) of the elbow flexors. The volunteers completed 12 weeks of strength training. The training protocol consisted of 4 sets of 8-10 maximum repetitions of unilateral elbow flexion. The interval between sets was 120 s. The training frequency was 3 sessions per week.
  
  
  
  The magnetic resonance images verified the presence of significant and similar hypertrophy in the distal, medial, and proximal portions of the elbow flexor muscles.
  
  
  
  Muscle hypertrophy may be assessed using only the medial CSA. We should not expect different degrees of hypertrophy among the regions of the elbow flexor muscles. Muscle Nerve 54: 750-755, 2016.
authors.affiliation: Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha - Belo Horizonte - Minas Gerais, Brazil, CEP, 31270-901.
authors.forename: Marcos D M
authors.initials: MD
authors.lastname: Drummond
authors.affiliation: Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha - Belo Horizonte - Minas Gerais, Brazil, CEP, 31270-901.
authors.forename: Leszek A
authors.initials: LA
authors.lastname: Szmuchrowski
authors.affiliation: Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha - Belo Horizonte - Minas Gerais, Brazil, CEP, 31270-901.
authors.forename: Karine N O
authors.initials: KN
authors.lastname: Goulart
authors.affiliation: Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha - Belo Horizonte - Minas Gerais, Brazil, CEP, 31270-901. brunopena@yahoo.com.br.
authors.forename: Bruno P
authors.initials: BP
authors.lastname: Couto
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology; D004551:Elbow Joint / Q000000981:diagnostic imaging* / Q000502:physiology; D006801:Humans; D006984:Hypertrophy / Q000000981:diagnostic imaging; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging / Q000379:methods / Q000592:standards*; D008297:Male; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging* / Q000502:physiology; D055070:Resistance Training / Q000379:methods*; D055815:Young Adult
keywords: exercise; magnetic resonance imaging; maximum repetitions; muscle architecture; skeletal muscle