preferred_name: Neck extension, head aligns with trunk; cervical and upper thoracic muscle activity.
preferred_name_lc: neck extension, head aligns with trunk; cervical and upper thoracic muscle activity.
label: Neck extension, head aligns with trunk; cervical and upper thoracic muscle activity.
label_lc: neck extension, head aligns with trunk; cervical and upper thoracic muscle activity.