eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-10-25 8 October Spl Edition 789 794 10.13005/bpj/784 4382 article In this study, score of a clinical test of physical mobility identified by Timed up and go (TUG)testing also effect of a cognitive task on TUG performance were compared between two groupsof nonspecific chronic neck pain and healthy participates. 24 people with nonspecific chronic neck pain and 24 control subjects were participated in this study. Times required to complete TUG was measured in three conditions including test without cognitive task, test with easy and difficult cognitive task. Subjects with nonspecific chronic neck pain had slower speed than control group in all of conditions. Increase in level of cognitive difficulty increased the amount of time of TUG in two groups. Interaction of group by cognitive difficulty was not significant, meaning cognitive difficulty had no effect on time required to complete TUG between two groups. Results of this study suggest mobility problem in subject with nonspecific chronic neck pain. An implication of these findings is that assessment and treatment of functional mobility these subjects are considered in clinic. Time up and go is a simple test to measure functional mobility. It is recommended that further research be undertaken the effect of secondary test on postural control subjects with nonspecific chronic neck pain with advance analysis. https://biomedpharmajournal.org/vol8octoberspledition/the-effect-of-dual-tasking-on-timed-up-and-go-performance-in-subjects-with-chronic-nonspecific-neck-pain/ Nonspecific chronic neck pain Timed up and go test attention dual-task methodology