Research
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Both PBT and ABT strategies produced similar lower body hypertrophy outcomes with no significant group differences.
Both training methods can be effectively used for lower body hypertrophy.
StrongSupportsmedium confidence
Additionally, there were no group differences (VL50: p=0.72; VL70: p=0.92; VM70: p=0.54).
Why this rating
Based on the study design involving a controlled comparison of training methods.
Source
Percentage-based and Autoregulated-based Resistance Training Loading Produce Similar Lower Body Hypertrophy Outcomes
Ryan K. Byrnes et al. · Medicine & Science in Sports & Exercise · 2017
DOI 10.1249/01.mss.0000517184.53506.f4
rct · n=11
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- Percentage-based training (PBT) resulted in a significant increase in muscle thickness of the vastus lateralis at 50% femur length (VL50) from 25.4±3.28 mm to 28.1±4.64 mm (+10.42%; p=0.04).Strong
- Autoregulated-based training (ABT) did not show a significant increase in muscle thickness of the vastus lateralis at 50% femur length (VL50) from 26.72±3.75 mm to 28.45±3.42 mm (+6.47%; p=0.16).Strong
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