Estimation of Aerobic Capacity and Determination of Its Associated Factors among Male Workers of Industrial Sector of Shiraz City, 2010

Background and aims In order to physiologically fit the job to the worker’s capability, maximum aerobic capacity (VO2-max) is used. This study was conducted to estimate VO2-max and determine its associated factors among workers of industrial sector of Shiraz city. MethodsIn this cross-sectional study, 500 healthy male workers employed in Shiraz city industries participated voluntarily. Subjects’ aerobic capacity was assessed by ergocycle test according to Astrand protocol for 6 minutes. A questionnaire consisted of two parts covering demographic, anthropometric and physiological characteristics was used as data collecting tool. ResultsMean and standard deviation of age of workers was 32.01 and 7.66 years, respectively. Worker’s aerobic capacity was estimated to be 2.69±0.263 1.min-1. The results showed that there was association between VO2-max and age, weight and BMI while no association was found between VO2-max and height. Also, statistical analysis revealed association between VO2-max and smoking and exercise per week (P<0.05). Nature of work, shift working, job satisfaction and fatigue had no association with aerobic capacity. Based on the results, regression equations were developed for estimation of aerobic capacity. ConclusionAerobic capacity had association with age, weight, BMI, exercise and smoking.