In Chinese adults who lift weights for 12 weeks, people with a specific gene version (CC) tend to gain more bone in their arms than those with another version (CT). Men with this gene also tend to build thicker leg muscles, and women with it tend to get stronger at explosive movements after training.
Claim Language
Language Strength
association
Uses association language (linked to, correlated with)
The claim uses 'demonstrate greater gains' and 'associations in'—phrases that indicate observed patterns or links rather than direct causation. 'Greater gains' implies a comparative difference but does not assert causation, and 'associations' explicitly frames the relationships as statistical links, not deterministic effects.
Context Details
Domain
exercise_science
Population
human
Subject
Chinese Han adults undergoing 12 weeks of resistance training
Action
demonstrate greater gains
Target
upper limb bone mineral content; lower limb muscle thickness in males; post-training power improvements in females
Intervention Details
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (0)
Contradicting (1)
VDR Gene Polymorphisms and Inter-Individual Variability in Response to Resistance Training.
The study found that people with the CT version of this gene, not the CC version, got more bone strength from training — which is the opposite of what the claim says. It did find CC helped men build leg muscle, but not in the way the claim described for bones or women.