Table 3. Exercise interventions

Exercise	Instructions	Purpose	Frequency	Repetitions
Cervical extension in a quadruped position	Induced posterior sagittal rotation, Performed within 1/3 to 1/2 of the normal range of motion	To improve deep cervical extensor activityTo improve normal axial rotation during cervical extension	3 times per week	10 repetitions per set,2 sets
Quadruped rock back exercise	Induced scapular protraction with thoracic flexion during rock back toward heels.Prevent cervical spine flexion	To stretch the latissimus dorsiTo improve thoracic kyphosis	3 times per week	10 repetitions per set,2 sets
Upper thoracic flexion exercise	Pull in abdominal muscles,Prevent cervical flexion and excessive lower thoracic spine flexion	To improve upper thoracic flexion	3 times per week	15 repetitions per set,3 sets
Wall slide with scapular elevation	Pull in abdominal muscles,Upper thoracic flexion,Prevent cervical flexion, and excessive lower thoracic flexion	To improve scapular upward rotationTo strengthen upper trapezius	3 times per week	15 repetitions per set,2 sets
Cervical extensor isometric exercise	Maintain cervical extension against bad resistancePrevent cervical retraction	To strengthen the cervical extensors	3 times per week	15 repetitions per set,2 sets