The Claim

Do leg presses build your glutes and inner thighs?

Source: Hypertrophic Effects of Single- versus Multi-Joint Exercise: A Direct Comparison Between Knee Extension and Leg Press.

What the research says

Supports is higher

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

Supports
31score
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

Leg presses make your butt and inner thigh muscles bigger, but leg extensions don’t affect those muscles at all.

See the scientific wording

Leg press training is associated with significant increases in gluteus maximus and adductor magnus muscle volume, while knee extension training is not.

What the research says

1 study

  1. Study: Hypertrophic Effects of Single- versus Multi-Joint Exercise: A Direct Comparison Between Knee Extension and Leg Press.

    The study found that doing leg presses made your butt and inner thigh muscles bigger, but doing knee extensions didn’t — which is exactly what the claim says.

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.