Dumbbell Triceps extension vs Barbell JM PRESS
Swapping Dumbbell Triceps extension (Dumbbell) for Barbell JM PRESS (Barbell) retains 100% overlap; expect bilateral free-bar coordination. 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 Dumbbell Triceps extension for Barbell JM PRESS.
| Muscle Group | Dumbbell Triceps extension | Barbell JM PRESS | Leverage Shift |
|---|---|---|---|
| Triceps Brachii | Primary (100%) | Primary (100%) | Matched |
Load & Volume Conversion: Dumbbell Triceps extension → Barbell JM PRESS
Worked weight heuristic: a 38 kg per hand set on Dumbbell Triceps extension (Dumbbell) maps roughly to 57.5 kg on Barbell JM PRESS (Barbell; 2.5 kg jumps, curve: descending or bell-shaped barbell lever). Calibrate set 1 at RPE 8 so e1RM history for Dumbbell Triceps extension remains unskewed. Zero anatomical muscles are dropped between Dumbbell Triceps extension and Barbell JM PRESS; 1:1 weekly set volume carries straight across.
Supporting Sports-Science Literature
| Study Title | Lead Author & Year | Verified Link |
|---|---|---|
| Less time, same gains: Comparison of superset vs. traditional set training on muscular adaptations | Burke (2025) | DOI ↗ |
| Maximal Strength Performance and Muscle Activation for the Bench Press and Triceps Extension Exercises Adopting Dumbbell, Barbell, and Machine Modalities Over Multiple Sets. | Farias (2017) | PubMed 27669189 ↗ |
| Varying the Order of Combinations of Single- and Multi-Joint Exercises Differentially Affects Resistance Training Adaptations. | Brandão (2020) | PubMed 32149887 ↗ |
| Effects of body position and loading modality on muscle activity and strength in shoulder presses. | Saeterbakken (2013) | PubMed 23096062 ↗ |