Reliability of isometric muscle endurance tests in subjects with postural neck pain.

Objective: The purpose of this study was to determine the reliability of 3 isometric muscle endurance tests in subjects with postural neck pain.

Methods: Twenty-one subjects with chronic postural neck pain performed 3 submaximal muscle tests twice on the first occasion and once at the second session 3 days later. The tests examined isometric neck flexion, neck extension, and scapular muscle endurance.