Isometric one arm up-middle-down pull-ups
Forearms - Biceps - Lats

- At a bar, pull up with both hands until your chin passes the bar.
- At that moment, release one of your hands and hold the position for a determined amount of time.
- Then lower yourself until your head is just below the bar and hold it there.
- Finally, lower down until your arm is completely locked and hold again.
You may also like

Shoulder shake
AnteriorDeltoid ∙ ExternalRotators ∙ Lats ∙ RearDeltoid ∙ UpperChest ∙ UpperTrapezius ∙ LowerTrapezius ∙ SideDeltoid

One arm dead hang
Forearms

Flag elevations
Obliques ∙ Lats ∙ AnteriorDeltoid ∙ Biceps ∙ UpperChest ∙ Triceps ∙ Abs ∙ UpperTrapezius

Commando pull-ups
Biceps ∙ Lats

Elbow flexion and extension
Biceps ∙ Triceps

Elbow-assisted one arm pull-ups
Biceps ∙ Lats ∙ Forearms