The Claim
In children and adolescents aged 5–18 years, fat-free mass index is a stronger predictor of absolute handgrip strength than absolute fat-free mass, indicating that normalization of lean mass for height provides a better reflection of muscular development during growth.
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.
In children and adolescents aged 5–18, the ratio of lean body mass to height predicts handgrip strength more accurately than total lean body mass alone, showing that adjusting for height better reflects muscle development during growth.
See the scientific wording
In children and adolescents aged 5–18 years, fat-free mass index (FFMI), which adjusts lean mass for height, is a stronger predictor of absolute handgrip strength than absolute fat-free mass, indicating that normalized lean mass better reflects muscular development during growth.
As children grow taller, their muscles become more efficiently arranged and better connected to nerves, so the amount of muscle relative to height better shows how strong they are than just how much muscle they have in total.
What the research says
1 studyIn growing kids, how strong your hand is is better predicted by how much muscle you have relative to your height, not just how much muscle you have total. This study found that using muscle adjusted for height works better than just counting total muscle.
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.