Analysis Version
v1
History
Back to Study: Eccentric exercise per se does not affect muscle d...
causal
Analysis v1
58
Pro
0
Against

Lifting weights slowly (eccentric) or quickly (concentric) both make your quads stronger in about 10 weeks — and you don’t need to be sore or damaged to get stronger.

Context Details

Domain

exercise_science

Population

human

Subject

Repeated eccentric or concentric resistance training over 10 weeks

Action

leads to

Target

comparable, mode-specific strength gains in knee extensors of healthy young men, demonstrating that muscle damage is not a prerequisite for hypertrophy or strength adaptation

Intervention Details

Type: exercise
Duration: 10 weeks

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)

58
58

Eccentric exercise per se does not affect muscle damage biomarkers: early and late phase adaptations

Randomized Controlled Trial
Human
2021 Feb

Contradicting (0)

0
No contradicting evidence found

Source Study

Eccentric exercise per se does not affect muscle damage biomarkers: early and late phase adaptations

Score: 58
DOI: 10.1007/s00421-020-04528-w

Similar Assertions

You can get just as strong by pushing weights up as by lowering them slowly—even if lowering them doesn’t make your muscles sore or damaged.

58
0
82%

Men who started with a longer tendon lever arm and could already activate their thigh muscles better tended to get stronger in eccentric movements after training — their starting point mattered.

39
0
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When untrained men get stronger during dynamic leg extensions, the biggest factor is how much they can turn on their thigh muscles — bigger muscles and fiber angles help a little, but turning on the muscles harder matters most.

39
0
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When untrained men get stronger during dynamic leg movements like standing up, the biggest factor is how much their thigh muscles fire, especially when combined with changes in the deep thigh muscle’s fiber angle and overall muscle size.

39
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78%

When guys who’ve never lifted weights before train their legs for 15 weeks, the more their muscles grow, the stronger they get—so muscle growth is mostly why they get stronger.

39
0
77%