Mechanical overload of the upper extremity and exposed workers

Background: Many diseases of the upper limbs have a high correlation between micro traumas awkward postures of upper limbs and activities performed with continuous and repetitive rhythms. Objectives: Aim of the study is to assess the presence of upper limb’s symptoms correlated with repetitive movements and muscle strain. Methods: A clinical-anamnestic questionnaire was administered to a group of workers.The differences between the averages were evaluated through the Student T test. The frequency of the single variables was compared using Yates’ Peason Chi Square test, using the Solo BMDP Statistical Software Program. Results: Automotive industry workers showed a higher incidence of diseases than white collar.Significant difference was also evident between the parameters recorded before the work shift and the ones recorded at the end of the work shift only among the workers. Conclusions: The presence of specific symptoms seems to suggest that the upper limb’s diseases and the activities characterized by repetitiveness, incongruent postures and strength are correlated.