The Study
Does Taking a Break Matter—Adaptations in Muscle Strength and Size Between Continuous and Periodic Resistance Training
This study is like a fair race between two groups of people who trained differently—one took a 10-week break, the other trained nonstop. After 20 weeks, both groups ended up equally strong and muscular. So we can say the break didn’t hurt their final results, but it didn’t help either—it just slowed them down temporarily.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
People who lifted weights for 10 weeks, then stopped for 10 weeks, then lifted again for 10 weeks ended up just as strong and muscular as people who lifted nonstop for 20 weeks.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 575 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this means taking a long break (like a vacation or injury) won’t ruin your progress if you get back to lifting; your body remembers how to grow faster the second time.
- 2After 10 weeks off, muscles shrank 7–10% and strength dropped 3–6%.
- 3But after 5 weeks back, they regained all lost size and strength — and even gained faster than people who never stopped.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Scandinavian Journal of Medicine & Science in Sports
Year
2024
Authors
Eeli J. Halonen, Idda Gabriel, Milla M Kelahaara, J. P. Ahtiainen, J. Hulmi
Related Content
Claims (5)
Adults who stop lifting weights for 10 weeks and then train for another 10 weeks end up with the same muscle strength and size as those who trained continuously for 20 weeks, even though they lost some strength and size during the break.
Untrained adults aged 18–40 who perform resistance training twice a week for 10 weeks experience a 20–25% increase in maximum strength for leg press and biceps curl exercises and a 15–17% increase in the size of the thigh and biceps muscles.
Adults who stop training for 10 weeks and then restart resistance training regain their previous muscle strength and size within 5 weeks, and they regain it faster initially than people who trained without stopping.
After 10 weeks of stopping exercise, untrained adults lose more muscle size than strength.
After taking a 10-week break from training, untrained adults regain muscle strength and size faster in the first 5 weeks of returning to exercise than they did when they first started training.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.