The Claim
Incorporating time under tension into resistance training volume calculations using the equation Volume = sets × reps × load × time per rep may improve the precision of training prescriptions, enhance individualization, and provide a more complete understanding of internal training load and adaptation.
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.
Adding the duration of each repetition to the calculation of workout volume may lead to more accurate and personalized resistance training plans, helping to better track how hard the body is working and how it adapts over time.
See the scientific wording
Incorporating Time Under Tension into resistance training volume calculations—via the equation Volume = sets × reps × load × time per rep—may improve the precision of training prescriptions, enhance individualization, and provide a more complete understanding of internal training load and adaptation.
When muscles contract for longer periods during exercise, the sustained pull on muscle fibers triggers chemical signals that build more muscle protein and recruit more muscle fibers. The buildup of fatigue-related chemicals also sends signals to the nervous system to activate more muscle fibers, making the training more effective even with lighter weights.
What the research says
1 studyStudy: When duration matters: rethinking resistance training load through time under tension
This study says that counting how long your muscles are working during each rep—instead of just counting reps and weights—makes workout plans more accurate and personal. It shows that this small change helps trainers better understand how hard your body is working.
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.