Deficit Deadlift vs Trap Bar Deadlift
FR : Soulevé de terre en déficit ↔ Trap Bar Deadlift
Swapping Deficit Deadlift (Barbell) for Trap Bar Deadlift (Barbell) retains 100% overlap; expect bilateral free-bar coordination. Compare exact 17-muscle fractional recruitment before swapping equipment mid-session.
Weighted Muscle Overlap
100%
Sum of min(coef A, coef B)
Primary Equipment
Barbell → Barbell
Same rep/load measurement family
Load Transfer Protocol
Target RPE 7.5–8.5
Never assume 1:1 kg across leverages
Side-by-Side 17-Muscle Recruitment Delta
How primary mover (1.0× set) and synergist (0.5× set) allocation changes when swapping Deficit Deadlift for Trap Bar Deadlift.
| Muscle Group | Deficit Deadlift | Trap Bar Deadlift | Leverage Shift |
|---|---|---|---|
| Hamstrings | Primary (28%) | Primary (28%) | Matched |
| Glutes (Gluteus Maximus / Medius) | Primary (25%) | Primary (25%) | Matched |
| Lower Back (Spinal Erectors) | Primary (20%) | Primary (20%) | Matched |
| Quadriceps | Secondary (12%) | Secondary (12%) | Matched |
| Traps (Upper & Mid Trapezius) | Secondary (8%) | Secondary (8%) | Matched |
| Forearms & Grip | Secondary (7%) | Secondary (7%) | Matched |
Load & Volume Conversion: Deficit Deadlift → Trap Bar Deadlift
Worked weight heuristic: a 100 kg set on Deficit Deadlift (Barbell) maps roughly to 100 kg on Trap Bar Deadlift (Barbell; 2.5 kg jumps, curve: descending or bell-shaped barbell lever). Calibrate set 1 at RPE 8 so e1RM history for Deficit Deadlift remains unskewed. Zero anatomical muscles are dropped between Deficit Deadlift and Trap Bar Deadlift; 1:1 weekly set volume carries straight across.
Supporting Sports-Science Literature
| Study Title | Lead Author & Year | Verified Link |
|---|---|---|
| Hip thrust and back squat training elicit similar gluteus muscle hypertrophy and transfer similarly to the deadlift. | Plotkin (2023) | PubMed 37461495 ↗ |
| Hip thrust and back squat training elicit similar gluteus muscle hypertrophy and transfer similarly to the deadlift. | Plotkin (2023) | PubMed 37877099 ↗ |
| An electromyographic analysis of sumo and conventional style deadlifts. | Escamilla (2002) | PubMed 11932579 ↗ |
| The Effect of Lifting Straps on Deadlift Performance in Females. | Trahey (2023) | PubMed 37729509 ↗ |