en Occupational and Industrial Health Occupational and Industrial Health پژوهشي Original Article <div class="WordSection1"><span style="line-height:1;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><span style="page:WordSection1"><b>Background:</b> Due to the increasing demand for production, shift work has become necessary. However, shift workers often experience decreased sleep quality due to misalignment between their working hours and physiological rhythms. This study aims to investigate the impact of workplace exercise on the sleep quality of rotational shift workers.<br> <b>Methods:</b> This interventional study involved 164 production line shift workers, who were divided into two groups: an experimental group (n = 82) and a control group (n = 82). Data were collected using a demographic questionnaire and the Pittsburgh Sleep Quality Inventory (PSQI). The experimental group engaged in corrective exercises conducted within the workplace for two 10-minute sessions per day, six days a week for eight weeks. Following the intervention, PSQI questionnaires were re-administered to both groups.<br> <b>Results:</b> The results indicated that after the workplace exercise intervention, the sleep quality of rotational shift workers in the experimental group improved by 7.3%, while it decreased by 28.1% in the control group. Additionally, the exercise intervention significantly reduced sleep latency (Z = -3.47, <i>P <</i> 0.001) and sleep disturbance (Z = -2.9, <i>P <</i> 0.001), while enhancing sleep efficiency (Z = -2.34, <i>P </i><i><span lang="EN">&le;</span></i> 0.01).<br> <b>Conclusion:</b> Implementing workplace exercise interventions with supervisors and in groups can enhance sleep quality among rotational shift workers leading to reduced sleep latency and disturbances.</span></span></span></span></div> <div aria-label="Page Break" class="cke_pagebreak" contenteditable="false" data-cke-display-name="pagebreak" data-cke-pagebreak="1" style="page-break-after:always" title="Page Break"></div> Exercise, Sleep, Shift, Workers, Workplace, 223 228 http://jhehp.zums.ac.ir/browse.php?a_code=A-10-109-4&slc_lang=en&sid=1 Faeze Dehghan Banadaki faezeedehghaan@gmail.com 100319475328460015728 100319475328460015728 No Department of Occupational Health Engineering, Student Research Committee, Faculty of Health, Qazvin University of Medical Sciences, Qazvin, Iran. Sakineh Varmazyar svarmazyar@qums.ac.ir 100319475328460015729 100319475328460015729 Yes Department of Occupational Health Engineering, Social Determinants Health Research Center and Research Institute for Prevention of Non-Communicable Diseases, Faculty of Health, Qazvin University of Medical Sciences, Qazvin, Iran. Ali Safari Variani Safary2400@yahoo.com 100319475328460015730 100319475328460015730 No Department of Occupational Health Engineering, Faculty of Health, Qazvin University of Medical Sciences, Qazvin, Iran.