Leg extensions make the whole front of your thigh muscle grow evenly, while squats mainly make the middle part of a different thigh muscle grow.

Pro

Against

Evidence from Studies

Supporting (1)

Community contributions welcome

The role of exercise selection in regional Muscle Hypertrophy: A randomized controlled trial

Randomized Controlled Trial

Human

2021 Oct

Contradicting (0)

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No contradicting evidence found

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.

Source Study

The role of exercise selection in regional Muscle Hypertrophy: A randomized controlled trial

Score: 41

DOI: 10.1080/02640414.2021.1929736

Similar Assertions

Different leg exercises make different parts of your thigh muscles grow bigger—leg extensions grow all parts of one muscle, while squats mainly grow the middle part of another.

89%

Doing leg extensions for 8 weeks makes the front thigh muscle bigger along its whole length more than doing squats, especially near the knee.

86%

Different leg exercises make different parts of your thigh muscles bigger — leg extensions grow the front part, squats grow the lower outer part.

85%

Doing leg extensions makes the front thigh muscle bigger along its whole length more than doing squats, especially near the knee.

83%

Doing leg extensions makes the front thigh muscle grow more evenly along its length than doing squats, which don’t stimulate that muscle as much.

83%