Analysis Version
v1
History
Back to Study: Comparison between 20-s and 2-min inter-set rest i...
descriptive
Analysis v1
Strong Support

When you train your quads, the big front muscle (rectus femoris) grows more than the side muscles (vastii), even when you do the same total amount of work.

51
Pro
0
Against

Evidence from Studies

Supporting (1)

51

Community contributions welcome

51

Comparison between 20-s and 2-min inter-set rest intervals on changes in muscle cross-sectional area and maximum strength under volume-load-equated resistance training

Randomized Controlled Trial
Human

The study found that after 10 weeks of leg training, the big front thigh muscle (rectus femoris) grew much more than the side muscles (vastii), just like the claim said — so the claim is right.

Contradicting (0)

0

Community contributions welcome

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

Comparison between 20-s and 2-min inter-set rest intervals on changes in muscle cross-sectional area and maximum strength under volume-load-equated resistance training

Score: 51
DOI: 10.1007/s11332-025-01605-5

Similar Assertions

This study only looked at the front and side of the thigh—so we don’t know if doing more sets helps your front thigh or hamstrings grow more.

0
52
78%

Muscles don’t grow evenly—when you train your thigh, the top and middle parts of the front muscle grow more than the bottom, and the side muscle grows the same everywhere.

54
0
78%

Whether you do CrossFit or lift weights regularly, your thigh muscles end up about the same size after years of training.

54
0
77%

Even if you do a lot of leg workouts, your thigh muscles grow about the same amount whether you do 20 or 50 sets a week—just doing any consistent training makes them bigger.

0
52
77%

If you lift the same total weight, your quads grow just as much whether you rest 20 seconds or 2 minutes between sets—so you don’t need to feel the burn to build muscle.

51
0
77%