Cable Seated Chest Flys vs Dumbbell Chest Fly
Swapping Cable Seated Chest Flys (Cable) for Dumbbell Chest Fly (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 Cable Seated Chest Flys for Dumbbell Chest Fly.
| Muscle Group | Cable Seated Chest Flys | Dumbbell Chest Fly | Leverage Shift |
|---|---|---|---|
| Chest (Pectoralis Major) | Primary (85%) | Primary (85%) | Matched |
| Shoulders (Deltoids) | Secondary (15%) | Secondary (15%) | Matched |
Load & Volume Conversion: Cable Seated Chest Flys → Dumbbell Chest Fly
Worked weight heuristic: a 45 kg set on Cable Seated Chest Flys (Cable) maps roughly to 38 kg per hand on Dumbbell Chest Fly (Dumbbell; 2 kg jumps, curve: extended end-range stretch with neutral wrist path). Calibrate set 1 at RPE 8 so e1RM history for Cable Seated Chest Flys remains unskewed. Zero anatomical muscles are dropped between Cable Seated Chest Flys and Dumbbell Chest Fly; 1:1 weekly set volume carries straight across.
Supporting Sports-Science Literature
| Study Title | Lead Author & Year | Verified Link |
|---|---|---|
| An electromyography analysis of 3 muscles surrounding the shoulder joint during the performance of a chest press exercise at several angles. | Trebs (2010) | PubMed 20512064 ↗ |
| Specific prime movers' excitation during free-weight bench press variations and chest press machine in competitive bodybuilders. | Coratella (2020) | PubMed 31397215 ↗ |
| A comparison of muscle activity and 1-RM strength of three chest-press exercises with different stability requirements. | Saeterbakken (2011) | PubMed 21225489 ↗ |
| The effects of ten weeks resistance training on sticking region in chest-press exercises. | Saeterbakken (2020) | PubMed 32645111 ↗ |