Research
Hormonal
Men experience significantly greater absolute muscle hypertrophy than women in response to heavy resistance strength training, regardless of age.
Men will likely gain more absolute muscle mass than women from the same training program due to physiological differences. This is normal. Women should focus on relative improvements and strength gains rather than comparing absolute size to men.
GoodSupportsHIGH confidence
A significantly greater absolute increase in muscle volume was observed in men than in women (p < .01)... men increased their muscle volume about twice as much in response to ST as did women.
Why this rating
Statistically significant difference (p<.01) with MRI-verified volume changes.
Source
Effects of Age, Gender, and Myostatin Genotype on the Hypertrophic Response to Heavy Resistance Strength Training
F. M. Ivey et al. · The Journals of Gerontology Series A · 2000
DOI 10.1093/gerona/55.11.m641
crossover · n=45Cited 288×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Heavy resistance strength training produces significant muscle hypertrophy in older adults (65-75 years) comparable to young adults (20-30 years) when using the same relative training stimulus.Good
- Young men are the only demographic group capable of retaining a significant portion of muscle volume gains after 31 weeks of detraining.Moderate
- A specific myostatin gene variant (Lys 153 Arg) may influence muscle hypertrophy in women, but not in men.Limited
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →