Figure 1.

A: Rubber bar held in involved (right) hand in maximum wrist flexion.

B: Other end of rubber bar grasped by noninvolved (left) hand.

C: Rubber bar twisted by flexing the noninvolved wrist while holding the involved wrist in flexion.

D: Arms brought in front of body with elbows in extension while maintaining twist in rubber bar by holding with noninvolved wrist in full flexion and the involved wrist in full flexion.

E: Rubber bar slowly untwisted by allowing involved wrist to move into extension, slowly, approximately a five second release,

i.e. eccentric contraction of the involved wrist extensors.

Note: Supplemental File 1 on the IJSPT website is a Video that demonstrates this exercise.