Repetition Tempo & Movement Velocity

How fast you raise and lower the weight; within a wide range it has limited impact on strength and size.

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Research consistently shows...

Tempo is the speed of the lifting (concentric) and lowering (eccentric) phases. Meta-analyses of repetition duration find that a broad range of controlled tempos - from a couple of seconds to several seconds per rep - produces similar strength and hypertrophy, so there is no need to count seconds obsessively. Intentionally very slow tempos offer no growth advantage and reduce the load you can use, while explosive intent on the lifting phase is useful specifically when power is the goal.

strengthhypertrophypowergeneral adultstrained

Common misconceptions

Myth: Super-slow lifting builds the most muscle. Actually: Deliberately ultra-slow reps limit load and offer no hypertrophy edge over normal controlled tempos.
Myth: You must lower the weight for an exact count. Actually: Any controlled eccentric works; the precise tempo within a normal range does not meaningfully change outcomes.

What we won't claim

Does not diagnose, treat, or cure any disease or injury
Not a substitute for individualized medical or physical-therapy advice
Results vary between individuals; no guaranteed outcome

When to seek a professional

Persistent pain or symptoms that do not resolve with rest
Exertional chest pain, dizziness or breathlessness

Key sources (5), grade mix A:5 · B:0 · C:0

77 supporting studies inform this block; the key sources below are shown with their individual grades and DOI links. This is the audit trail.

AYasin Ersöz (2023) · International Journal of Disabilities Sports & Health Sciences · 10.33438/ijdshs.1323722

AT. Davies et al (2017) · Sports Medicine · 10.1007/s40279-017-0676-4

AJinghui Zhong et al (2026) · Frontiers in Physiology · 10.3389/fphys.2025.1720205

AMatthew J. Hermes et al (2023) · Journal of Strength and Conditioning Research · 10.1519/jsc.0000000000004490

AD. Hackett et al (2018) · European Journal of Sport Science · 10.1080/17461391.2018.1434563

✓Explore all 778 studies in Strength Training →

The full evidence base this focus area draws on, every study with its grade and DOI.