Effects of tailored resistance exercise training in a group of metalworkers with ergonomic or manual handlings loads prescription by the occupational physician: A pilot study

Background. Work-related musculoskeletal disorders (WRMSDs) are cause of disability and loss of productivity. Part of the workers suffers from WRMSDs while others are exposed to risk factors. Resistance training (RT) can reduce pain symptomatology, counteracting WRMSDs. The aim of this investigation is to evaluate the effectiveness of a RT program in a group of metalworkers on pain perception, disability and physical fitness in context of real work-setting. Methods. Eighteen metalworkers took part to a 12 weeks RT program with a personalized intervention during the sessions. Disability of the arm, shoulder and hand questionnaire (DASH) and the visual analogue scale for the low back (L-VAS) represent the primary outcome regarded. Handgrip strength, shoulder and hamstrings flexibility and cardiorespiratory endurance were tested. Pre-post differences were evaluated through T-test. Results. DASH score improved significantly of 4.28 points (p = 0.03). L-VAS did not change (p = 0.38) while physical fitness outcomes improved significantly except for the shoulder flexibility. Spontaneous attendance reached 83.42%. Conclusions. Pain and disability decreased in upper limb and shoulder but not in the lumbar spine. Moreover, physical fitness of participants improved. Considering the spontaneous attendance to the program of these participants, we exhort RT implementation in occupational primary and secondary prevention programs.