Effect of Passive and Active Rest Break in Musculoskeletal Complains

Inclusion and Exclusion Criteria Office workers, who work at least 6 hours a day in a sitting position, will be included. disabled employees will not be included. Sample size: The prevalence of complaints and pain intensity in the arm, neck and shoulder regions, in addition to the lumbar region. A statistical power of 80%, α = 5%, sample loss of 15% will be considered for the sample calculation. The reduction expected of the prevalence of musculoskeletal complaints and pain will be 20%. Therefore, it will be necessary to perform the study 286 workers, allocated in control group (CG), intervention groups (IG), passive rest break ‐ Shiatsu ‐ Quick massage (SGM); and comparative group using active rest break ‐ Compensatory exercise program(CE). the outcomes will be evaluated at the individual level, since they reflect aspects of workers' health. Data on outcome measures will be assessed at baseline and after 4 months. After a period of 4 months, the sector that received only a break or massage can receive work gymnastics, if the hypothesis of this study is confirmed on the effectiveness of the exercise on the other interventions. Both groups of workers will be followed up in a longitudinal study in subsequent months and compared to the other workers identified, within the established criteria for risk analysis, for 4 months. Primary outcome: The occurrence of musculoskeletal symptoms (pain, tingling or numbness) will be evaluated by means of the Nordic Questionnaire for Musculoskeletal Symptoms The intensity of the pain will be evaluated by the Verbal Numerical Scale of Pain23. It is an 11‐point scale, in which 0 means "no pain" and 10 means "worst possible pain". Secondary outcomes: 1) Work ability index (WAI) to identify the worker's perception at the moment or in the near future; 2)