The Claim
Approximately 70% of repetitions in resistance training are performed with the intended cadence, even in the presence of natural tempo deviations induced by fatigue, which supports the viability of time-under-tension (TUT)-based training programming.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
During resistance training, about 70% of lifts are performed at the planned speed, even when fatigue causes natural changes in movement tempo, suggesting that training programs based on controlling time under tension remain practical and feasible.
See the scientific wording
Approximately 70% of repetitions in resistance training are performed with the intended cadence, despite natural tempo deviations under fatigue, supporting the viability of TUT-based programming.
When lifting weights slowly and deliberately, the muscles stay under tension longer, which builds up metabolic byproducts and signals the nervous system to keep firing strongly. Even when tired, the body keeps recruiting muscle fibers at the planned pace because the nervous system responds to the ongoing chemical buildup and mechanical strain, helping the person stick to the intended speed for most repetitions.
What the research says
1 studyStudy: When duration matters: rethinking resistance training load through time under tension
Even when people get tired during weightlifting, they still mostly lift at the speed they planned to — about 7 out of 10 times. This means training programs that focus on controlling how fast you lift can still work well in real life.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.