Morpho-functional response of the elbow extensor muscles to twelve-week self-perceived maximal resistance training

• Published in: Clinical physiology and functional imaging 2010-11, Vol.30 (6), p.413-419
• Main Authors: Gacesa, Jelena Z. Popadic, Jakovljevic, Djordje G., Kozic, Dusko B., Dragnic, Natasa R., Brodie, David A., Grujic, Nikola G.
• Format: Article
• Language: English
• Subjects: adaptation; Adaptation, Physiological; Biological and medical sciences; Elbow; exercise; Fundamental and applied biological sciences. Psychology; Humans; Hypertrophy; Magnetic Resonance Imaging; Male; Muscle Contraction; Muscle Fatigue; Muscle Strength; Muscle Strength Dynamometer; Muscle, Skeletal - pathology; Muscle, Skeletal - physiopathology; Organ Size; Perception; Physical Endurance; Resistance Training; skeletal muscle physiology; strength; Time Factors; Vertebrates: anatomy and physiology, studies on body, several organs or systems; Young Adult
• ISSN: 1475-0961; 1475-097X
• DOI: 10.1111/j.1475-097X.2010.00957.x

Summary The aim of this study was to determine morphological and functional changes of the elbow extensor muscles in response to a 12‐week self‐perceived maximal resistance training (MRT). Twenty‐one healthy sedentary young men were engaged in elbow extensor training using isoacceleration dynamometry for 12 weeks with a frequency of five sessions per week (five sets of ten maximal voluntarily contractions, 1‐min rest period between each set). Prior to, at 6 weeks and after the training, a series of cross‐sectional magnetic resonance images of the upper arm were obtained and muscle volumes were calculated. Maximal and endurance strength increased (P