Effect of change in pelvic tilt angle on neck muscle activity in sitting posture

Objective: Pelvic tilt should be used to examine muscle activity in the neck and shoulders. Method: The neck muscle activity was measured during an anterior pelvic tilt in a random order for 30 selected subjects, and the neck muscle activity was measured during a posterior pelvic tilt after 1 minute of rest. Results: The %RVC values of upper trapezius, SCM, and SC were significantly lower in the anterior pelvic tilt than in the posterior pelvic tilt. Conclusion: The anterior pelvic sitting posture prevents forward posture by maintaining the normal curvature of the spine and relatively reduces the load around the neck and shoulders. Therefore, in order to correct the forward posture, it seems appropriate to perform the anterior tilt of the pelvis in advance.