According to my AFAA’s datebase’s, exercises in all fours position, wall push-ups, or flexed wrists during arm movements in the aerobic workout may initiate symptoms.Rubber tubing for upper body strenthening should be used with caution due to the tendency of students to “break” the alignment of their wrists with their forearms which could potentially exacerbate condition.
Continuous stretching of the wrist flexors can strengthen the tendons:
Kneel on the floor.
Flex both wrists and place the palm of each hand on the floor, shoulder-width apart.
Point the fingers toward the knees.
While keeping the elbows straight, lean backward (buttock to the heels),keeping the palms flat the floor.
The closer the hands are to the knees, the easier is to keep the backs of the hands touching the floor.
The following books may be helpful, too:
Baldwin K.Kinesiology for Personal Fitness Trainers,New York:McGraw-Hill,
Nieman D,ed. Exercise Testing and Prescription: A Health-Related Approach.New York:McGraw-Hill,2003.