The Claim

Some older people don’t build muscle no matter how much they train—and their muscles don’t show any detectable biological changes, even when they do more exercise.

Source: Molecular signatures underlying heterogenous hypertrophy responsiveness to resistance training in older men and women: a within-subject design.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
41score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Some older people don’t build muscle no matter how much they train—and their muscles don’t show any detectable biological changes, even when they do more exercise.

See the scientific wording

Low responders to resistance training show no measurable molecular changes in any pathways, regardless of whether they perform one or four sets of training.

What the research says

1 study

  1. Study: Molecular signatures underlying heterogenous hypertrophy responsiveness to resistance training in older men and women: a within-subject design.

    Even when low responders did more workouts, their muscles didn’t show any biological changes—unlike others who responded well. So, doing more sets didn’t help them at the molecular level.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.