The Claim
After 8 weeks of dumbbell row training, there is a 1% increase in distal elbow flexor muscle thickness, indicating that this exercise does not produce significant hypertrophy in the distal regions of the biceps brachii and brachialis.
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.
After 8 weeks of doing dumbbell rows, the muscles at the back of the upper arm near the elbow show almost no growth, suggesting that this exercise may not effectively build muscle in those specific areas.
See the scientific wording
Dumbbell rows do not produce significant distal elbow flexor hypertrophy after 8 weeks of training, with only a 1% increase in distal thickness, suggesting that multi-joint exercises may not equally stimulate all regions of the biceps brachii and brachialis.
When you do dumbbell rows, your upper arm muscles don't get pulled or stretched much at their lower ends, so those parts don't get enough tugging to grow bigger.
What the research says
1 studyThis study found that doing dumbbell rows barely made the lower part of your biceps bigger, even after 8 weeks — so it’s not the best exercise if you want to grow that specific part.
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.