AI Article Synopsis
- Muscle hypertrophy, the increase in muscle size from strength training, was assessed in the elbow flexor muscles of untrained men over 12 weeks.
- Eleven participants performed a strength training regimen focusing on unilateral elbow flexion, completing 3 sessions each week.
- Results showed significant hypertrophy in all regions (distal, medial, proximal) of the elbow flexors, indicating the medial cross-sectional area can be used for assessments of muscle growth.
Article Abstract
Introduction: 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.
Methods: 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.
Results: The magnetic resonance images verified the presence of significant and similar hypertrophy in the distal, medial, and proximal portions of the elbow flexor muscles.
Conclusions: 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.
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| http://dx.doi.org/10.1002/mus.25088 | DOI Listing |
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