IRCT20180916041047N1 IRCT 2018-12-29 Ahvaz University of Medical Sciences "The Effect of Educational Intervention Based on the Extended Parallel Process Model on the Prevention of Physical disorders of work with computer" The Effect of Educational Intervention Based on the Extended Parallel Process Model on the Prevention of Physical disorders of work with computer in Female Employees of Ahvaz Health Services Centers 2018-10-27 anticipated 238 Complete https://irct.ir/trial/33929 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: The census is the sampling method and the method of dividing the members into different groups are initially clustered and then randomized allocation of lottery type. In this way, 15 urban health centers will be divided into three equal clusters of population, and then each of the clusters will be randomly assigned to the three study groups. In fact, the participants and the researcher will not know the stage in the selection of participants. N/A Condition 1: Musculoskeletal Disorders. Condition 2: Visual disturbances. Intervention 1: Control group : will not receive intervention. Intervention 2: First intervention group : will receive educational content that will consist of messages that are based on perceived threats and will be sent as short messages via mobile phones for four weeks. Intervention 3: Intervention group : will receive educational content that will consist of messages that are based on Efficiency and will be sent as short messages via mobile phones for four weeks. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is Because the current research is at an early stage and no decision has been made in this regard