Figure 1From: Effect of head and limb orientation on trunk muscle activation during abdominal hollowing in chronic low back pain Electrode placement and exercise position. Acronyms: ATNR: Asymptomatic Tonic Neck Reflex. Consent was obtained from the researcher in the photos. a: Supine, b: ATNR Left, c: Cervical Rotation to the Left, d: Morrow Stage 1 Defined as Cervical Extension, e: Morrow Stage 2 Defined as Cervical Flexion.Back to article page