Analysis Version
v1
History
Back to Study: The development of skeletal muscle hypertrophy thr...
quantitative
Analysis v1
1
Pro
0
Against

You can't really grow bigger muscles until you've done about 18 weightlifting sessions—your body needs time to adapt before it starts building real muscle.

Context Details

Domain

exercise_science

Population

human

Subject

True muscle hypertrophy

Action

is only observed after

Target

approximately 18 resistance training sessions

Intervention Details

Type: exercise

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 (1)

1
1

The development of skeletal muscle hypertrophy through resistance training: the role of muscle damage and muscle protein synthesis

Narrative Review
2018 Mar

This study says your muscles don’t really grow bigger until you’ve worked out with weights about 18 times — before that, any size increase is just swelling, not real muscle growth.

Contradicting (0)

0
No contradicting evidence found

Source Study

The development of skeletal muscle hypertrophy through resistance training: the role of muscle damage and muscle protein synthesis

Score: 1
DOI: 10.1007/s00421-017-3792-9

Similar Assertions

You can't build real muscle strength just by working out a few times—you need to stick with it for weeks, because the first few workouts just make your muscles look puffy, not stronger.

1
0
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Getting stronger from lifting weights doesn’t always mean your muscles are getting bigger—and vice versa. Strength and size don’t go hand in hand.

46
0
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Getting stronger from lifting weights doesn’t always mean your muscles are getting bigger—and vice versa. Strength and size don’t go hand in hand.

46
0
85%

People grow muscle at very different rates — but each person tends to grow their arms and legs similarly, no matter what weight they use. This means your genes and biology matter more than how heavy your weights are.

46
0
83%

Higher weekly resistance training volume leads to greater muscle hypertrophy in trained individuals.

53
52
83%