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causal
Analysis v1
Contested

Doing slow, gentle weight training can build muscle and make you just as strong as lifting heavy weights quickly.

47
Pro
52
Against

Evidence from Studies

Supporting (4)

47

Community contributions welcome

47

Effects of Whole-Body Low-Intensity Resistance Training With Slow Movement and Tonic Force Generation on Muscular Size and Strength in Young Men

Randomized Controlled Trial
Human
2008 Nov

The study found that doing slow, low-intensity weight training builds muscle and strength just as well as fast, high-intensity training, which matches the claim exactly.

38

Effects of low-intensity resistance exercise with slow movement and tonic force generation on muscular function in young men.

Randomized Controlled Trial
Human
2006 Apr

The study found that doing slow, low-intensity weight lifting built as much muscle and strength as fast, high-intensity lifting, just like the claim says.

37

Low-load Slow Movement Squat Training Increases Muscle Size and Strength but Not Power

Randomized Controlled Trial
Human
2016 Apr

The study tested slow, low-weight exercise and found it builds muscle and strength just like the claim says, but it didn't compare it directly to high-intensity exercise to prove they're equal.

35

Increased muscle size and strength from slow-movement, low-intensity resistance exercise and tonic force generation.

Randomized Controlled Trial
Human
2013 Jan

The study tested the exact same slow, low-intensity exercise method and found it built muscle and strength in older people, which supports the claim that this type of workout can be as good as harder exercises.

Contradicting (1)

52

Community contributions welcome

52

Intentionally Slow Concentric Velocity Resistance Exercise and Strength Adaptations: A Meta-Analysis

Systematic Review With Meta-Analysis
Human
2023 Aug 1

The study found that fast exercise builds more strength than slow exercise, which goes against the claim that slow exercise is just as good.

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.

Similar Assertions

When healthy young men do slow, low-effort weightlifting exercises, their muscles work longer and use more oxygen than during faster or higher-effort exercises in a single workout session.

38
0
84%

Doing slow, low-intensity weight training twice a week for about three months can build muscle and strength almost as well as fast, heavy lifting in young men who don't normally exercise.

47
0
83%

Slow, low-effort weight training keeps your muscles working hard and starves them of oxygen more than fast, heavy lifting, which might help build muscle and strength just as well by stressing the muscles in a different way.

47
0
82%

Lifting heavier weights makes you stronger and improves your brain-muscle connection more than lifting lighter weights, even if you do the same total amount of work and build the same muscle size.

52
25
79%

Doing slow, controlled weight lifts with light weights can make your muscles use up more oxygen during the workout than doing the same lifts fast or lifting heavy weights—even if the heavy lifting feels harder.

46
0
78%

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