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Both FAST and SLOW repetition tempos produced similar increases in muscle thickness at the proximal portion of the quadriceps.
Practitioners can use either tempo for muscle thickness gains in trained individuals.
StrongSupportsmedium confidence
Both legs similarly increased MTP (estimated differences: FAST: 0.24 cm, 3.6%; SLOW: 0.20 cm, 3.1%).
Why this rating
Based on study design from abstract.
Source
Does Varying Repetition Tempo in a Single-Joint Lower Body Exercise Augment Muscle Size and Strength in Resistance-Trained Men?
Jeremy R. Pearson et al. · The Journal of Strength and Conditioning Research · 2021
DOI 10.1519/jsc.0000000000003953
rct · n=13Cited 15×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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