Upper arm drops during the extension
Gravity pulls the upper arm down; the lateral head loses its load.
Overactive muscles
Posterior deltoidLatissimus dorsi
Corrective work
Foam RollLats↗StretchLat stretch (kneeling overhead)↗Push · Upper Body
Seated Dumbbell Kickback
Coaching cues
- Sit on a bench; hinge forward so the torso is nearly parallel to the floor
- Upper arm parallel to the floor; extend the forearm back to lockout
- Pause and squeeze; lower slowly
- Seated position supports the trunk and reduces cheating
Common faults 2
Trunk straightens during the kickback
The hinge position is lost; line of pull changes completely.
Overactive muscles
Erector spinaeHamstrings
Corrective work
Foam RollHamstrings↗StretchHamstring stretch with strap↗