Resisted forearm pronation (Forearm pronation strengthening, with band, arms crossed; 01)

Start in a seated position with a resistance band held in the hand of your affected arm with the other end of the band fixed across you securely by the unaffected arm.
Holding the resistance band, rest your affected arm on the table with your palm facing upwards.
Turn your palm face down, pulling against the resistance of the band.
Control the movement and then return back to the start position and repeat.