The Study
Lacto-resistance training: a method to facilitate muscle hypertrophy in professional bodybuilders
This study shows that bodybuilders who did a special kind of workout that makes muscles produce more lactate ended up with slightly bigger muscles compared to those who didn’t train or did regular workouts. But because the study didn’t randomly assign people to groups, we can’t say for sure the workout caused the growth—it might be other factors.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Some strong bodybuilders stop gaining muscle with normal workouts. This study tested a new workout that causes a lot of muscle burn by building up lactate. It checked if this 'burn workout' helps them grow bigger muscles again.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 552 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this is meaningful because these were pro bodybuilders who usually don’t gain muscle anymore—so seeing growth is a big deal.
- 2After 4 weeks, the burn workout group had 22% bigger leg muscles.
- 3Their squat and leg press strength went up by 20%.
- 4The normal workout group got stronger too (11–14%), but their muscles didn’t get bigger.
- 5The burn workout also caused 38% more lactate and more oxygen drop in muscles.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Sport Sciences for Health
Year
2023
Authors
Mohsen Hatami, R. Nikooie, A. Enhesari
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.