The Claim
Eight weeks of resistance training, irrespective of load, is associated with significant increases in upper body and back muscle thickness in young adult males, as measured by ultrasonography, indicating that both high-intensity and high-volume training protocols can stimulate muscle hypertrophy.
What the research says
Challenges is higher
Challenge is ahead, but a single strong supporting 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.
If young guys lift weights for eight weeks—whether they go heavy or do more reps—they’ll likely build muscle in their upper body and back, and that can be seen with ultrasound scans.
See the scientific wording
Eight weeks of resistance training, regardless of load, is associated with significant increases in upper body and back muscle thickness in young adult males, as measured by ultrasonography, confirming that both high-intensity and high-volume protocols can stimulate muscle growth.
What the research says
1 studyStudy: The effect of myofibril and sarcoplasmic hypertrophy training on muscle hypertrophy and strength
The study found that one type of weight training built more muscle than another, which goes against the idea that all types of lifting work the same for muscle growth.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.