Why do muscles grow differently in different people?
Influence of intramuscular steroid receptor content and fiber capillarization on skeletal muscle hypertrophy
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study looked at why some people's muscle fibers grow more than others after exercise by checking their muscle cells before and after 10 weeks of leg training.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 531 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study looked at why some people's muscle fibers grow more than others after exercise by checking their muscle cells before and after 10 weeks of leg training.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 531 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Publication
Authors
Van Vossel K, Hardeel J, Van der Stede T, Weyns A, Boone J, Blemker SS, Derave W, Lievens E
Related Content
Claims (4)
People new to weight training who have more of a certain protein in their muscles (called ERα) tend to gain more muscle size after 10 weeks of leg exercises — so this protein might help explain why some people build muscle faster than others.
If you're new to strength training, having more tiny blood vessels around your fast-twitch muscle fibers might help those muscles grow more when you start working out.
Doing 10 weeks of leg exercises that strengthen your knee muscles boosts one specific hormone receptor in your muscles (ERα), but doesn’t change two others (AR and ERβ).
If you're new to working out, doing leg exercises for 10 weeks can make one of your big thigh muscles grow bigger, even if the individual muscle fibers don't get thicker.