In addition, Blangsted and colleague. Reported that the effect of one-year resistance training of the neck–shoulder region was more effective in reducing the duration and intensity of neck and shoulder symptoms than all-around physical exercises. However, this type of exercise did not improve work ability or mean sick leave. The outcomes might be explained by the initially high-work ability (90%) and low mean sick leave (five days per year) in their study population. Their study was a long-term study of exercise for one year, using resistance training, while ours was a four-week duration of stretching exercise. However, we can demonstrate the effect of stretching exercise as early as four weeks of treatment.