To Perform Trunk Flexion:
- Move the trunk into its end range position
- Place 1 hand on opposite shoulder.
- Press shoulder into hand as if flexing the trunk with only enough pressure to perform the isometric contraction at 10-20% for 3-6 sec x 3-6 sets.
- Rest approximately 5 seconds between reps.
- Reset the trunk flexion as far as it can go after each rep.
