Comparative effect of driving side on low back pain due to Repetitive Ipsilateral Rotation

To determine the effects of repetitive ipsilateral rotation on low back pain among the taxi drivers of right and left hand drive. A total of 1200 (600 Iran+600 Pakistan) male taxi drivers, aged between 20-60 years with work experience of more than one year were randomly selected and interviewed in Tehran (Iran) & Lahore (Pakistan) to fill self-administered questionnaires in Persian and Urdu languages which contained socio-demographic, work related and LBP characteristics. Chi-square test and multiple logistic regression models were employed for statistical analyses. Point, one week, one year and lifetime prevalence of LBP among right hand drive taxi drivers was 26.7%, 35.5%, 49.8% and 77.7% respectively. Point, one week, one year and lifetime prevalence of LBP among left hand drive taxi drivers was 37%, 42.7%, 53.5% and 72.3% respectively. Mean Numeric Pain rating scale (NPRS) score was 4.15 (SD=1.42) in Pakistan, while in Iran it was 4(SD=1.57). There was no significant difference regarding pain intensity (p=0.123) between drivers from both countries. Mean Roland-Morris Questionnaire (RMQ) score among drivers in Pakistan with LBP was 7.76(SD= 2.50), while in Iranian drivers who had LBP, mean RMQ score was 7.71(SD=2.99). Static or less dynamic muscles are more prone to LBP due to lower endurance. Lack of exercising habit, work as a driver for more number of years, driving within city, more driving hours in a day, forward bending, lifting, no seat comfort, lack of awareness regarding ergonomics and lower satisfaction level of job were the main reasons of LBP.