Effects of a smartphone game to facilitate active neck movements on the incidence of neck pain among office workers: A 6-month cluster-randomized controlled trial.

Objectives: To evaluate the effects of a smartphone game for active neck movement exercise on perceived neck discomfort, new onset neck pain, and active cervical range of motion among high-risk office workers.

Methods: A 6-month prospective cluster-randomized controlled trial was conducted. Workers were randomly assigned at the cluster level into either the intervention group (n = 50), who received a smartphone game to play twice a day, or the control group (n = 50), who received a placebo seat pad to use while sitting.