The Claim
Does full or partial ROM from the bottom make muscles grow more at the ends?
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Doing a full squat or starting a bicep curl from the bottom makes your muscles grow more at the far ends (like the top of your thigh or the outer part of your bicep) than doing partial reps from the top.
See the scientific wording
Training with full or initial range of motion (ROM) is associated with greater hypertrophy in distal muscle regions compared to final ROM, likely because these ROMs better engage muscles at longer lengths with higher external torque.
What the research says
1 studyStudy: The interplay between muscle length, range of motion, and exercise selection: a review
This study says that lifting weights through a full or starting range of motion makes muscles grow better because it stretches them more while still pushing hard—exactly what the claim says.
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.