Research
Cellular
Muscle size increases vary across regions within and between muscles after resistance training programs.
Practitioners should consider regional differences in muscle hypertrophy when designing training programs.
StrongSupportsmedium confidence
Importantly, muscle size increases vary across regions within and between muscles after resistance training programs (i.e., heterogeneous, or nonuniform, muscle hypertrophy).
Why this rating
The claim is supported by a review of existing literature.
Source
Determining Changes in Muscle Size and Architecture After Exercise Training: One Site Does Not Fit all
João Pedro Nunes et al. · The Journal of Strength and Conditioning Research · 2024
DOI 10.1519/jsc.0000000000004722
otherCited 28×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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