The Claim
In untrained females, both high-volume (15-20 RM) and high-intensity (4-6 RM) resistance training produce similar hypertrophy and significant strength gains over 8 weeks.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
For women who don't usually lift weights, doing lots of lighter reps or fewer heavy reps both build similar muscle size and make you stronger after two months.
See the scientific wording
In untrained females, both high-volume (15-20 RM) and high-intensity (4-6 RM) resistance training produce similar hypertrophy and significant strength gains over 8 weeks.
When muscles are worked to the point of fatigue, whether with heavy or light weights, the force on the fibers and the buildup of metabolic byproducts turn on a molecular signal that tells the muscle to build more protein. This increases the size of the muscle fibers and makes them stronger over time.
What the research says
2 studiesFor women who don’t usually lift weights, doing either lighter weights for more reps or heavier weights for fewer reps both build muscle and make you stronger about the same amount after two months.
Study: Influence of two different modes of resistance training in female subjects.
The study tested exactly what the claim said: two types of weight training in women who don't usually exercise, and found both made muscles bigger and stronger in similar ways.
Related videos
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 2 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.