- Sit on curl machine placing back of arms on pad. Grasp lever
handles with underhand grip. Align elbows at same pivot point
as fulcrum of lever.
- Raise lever handles toward shoulders. Lower handles until
arms are fully extended. Repeat.
- Seat should be adjusted to allow arm pit to rest near top
of pad. Back of upper arm should remain on pad throughout movement.
If machine has secondary lever (as shown), it is not as essential
to position elbows in-line with the primary fulcrum, as would
otherwise be required.
- Long head (lateral head) of biceps brachii is activated significantly
more than short head (medial head) of biceps brachii since short
head enters into active
insufficiency as it continues to contract. Long head of Triceps
Brachii is only significant activated as antagonist stabilizer
when it approaches passive
insufficiency as elbow nears full flexion. Also see movements
performed on machine with no
seat and arms positioned
Stabilizers (see comments)