Smith machine bulgarian squat vs Dumbbell Split Squat
Swapping Smith machine bulgarian squat (Machine) for Dumbbell Split Squat (Dumbbell) retains 100% overlap; expect independent unilateral stabilization. Compare exact 17-muscle fractional recruitment before swapping equipment mid-session.
Side-by-Side 17-Muscle Recruitment Delta
How primary mover (1.0× set) and synergist (0.5× set) allocation changes when swapping Smith machine bulgarian squat for Dumbbell Split Squat.
| Muscle Group | Smith machine bulgarian squat | Dumbbell Split Squat | Leverage Shift |
|---|---|---|---|
| Quadriceps | Primary (38%) | Primary (38%) | Matched |
| Glutes (Gluteus Maximus / Medius) | Primary (35%) | Primary (35%) | Matched |
| Hamstrings | Secondary (15%) | Secondary (15%) | Matched |
| Hip Adductors | Secondary (12%) | Secondary (12%) | Matched |
Load & Volume Conversion: Smith machine bulgarian squat → Dumbbell Split Squat
Worked weight heuristic: a 115 kg set on Smith machine bulgarian squat (Machine) maps roughly to 38 kg per hand on Dumbbell Split Squat (Dumbbell; 2 kg jumps, curve: extended end-range stretch with neutral wrist path). Calibrate set 1 at RPE 8 so e1RM history for Smith machine bulgarian squat remains unskewed. Zero anatomical muscles are dropped between Smith machine bulgarian squat and Dumbbell Split Squat; 1:1 weekly set volume carries straight across.
Supporting Sports-Science Literature
| Study Title | Lead Author & Year | Verified Link |
|---|---|---|
| Progressive overload without progressing load? The effects of load or repetition progression on muscular adaptations. | Plotkin (2022) | PubMed 36199287 ↗ |
| Effects of Training With Free Weights Versus Machines on Muscle Mass, Strength, Free Testosterone, and Free Cortisol Levels. | Schwanbeck (2020) | PubMed 32358310 ↗ |
| Hip thrust and back squat training elicit similar gluteus muscle hypertrophy and transfer similarly to the deadlift. | Plotkin (2023) | PubMed 37461495 ↗ |
| Isometric exercise induces analgesia and reduces inhibition in patellar tendinopathy. | Rio (2015) | PubMed 25979840 ↗ |