Document Type : Research Paper I Open Access I Released under (CC BY-NC) license
Authors
1 Department of Sports Sciences-sports nutrient, Shiraz Zand Institute of Higher Education, Shiraz, Iran.
2 Department of Sports Sciences, Shiraz Zand Institute of Higher Education, Shiraz, Iran.
3 Department of exercise physiology, Shiraz branch, Islamic Azad University, Shiraz, Iran
Abstract
Introduction: The aim of the present study was to compare and correlate physical fitness and work ability with the expression of miR-133a in firefighters of the fire department.
Methodology: The present study was of an applied type and descriptive-analytical in terms of research method. The statistical population was all firefighters of the Shiraz Fire Department, of which 20 (10 administrative posts, 10 operational posts) were selected from 24 stations and 12 fire stations that were willing to cooperate using the accessible sampling method. Physical fitness and work ability indices were examined using the WAI questionnaire and miR-133a expression was examined using the Real-time PCR method. Data analysis was performed using the Shapiro-Wilk, Pearson, and independent t-tests by SPSS27, and the significance level was considered to be P<0.05.
Results: No significant relationship was observed between miR-133a expression and work ability and physical fitness indices in the studied groups. There was also no significant difference in work ability, core muscular endurance, upper body muscular endurance, and flexibility between the operational and administrative groups, but a significant difference was observed between the maximum oxygen consumption (P=0.03) and miR-133a expression (P=0.02) among firefighters in the operational and administrative groups.
Conclusions: In operational firefighters, a decrease in miR-133a is associated with an increase in Vo2max. It is suggested that regular exercise programs be developed to improve cardiorespiratory fitness and manage occupational stress. Further research is necessary to understand the relationship between miR-133a and physical fitness in order to design more effective health interventions for firefighters.
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