Core stregth sinergyand its influence in non chronic LBP

Purpose: to evaluate the influence of the core muscles strength in non chronic LBP. Introduction: LBP is often associated to the job related activities and the lack of core strength. Firefighters have a high percentage of risk in job related LBP, such as many other kind of job. Methods: 18 male firefighters (age 42,9±7,4; BMI 25,6±3,0) from the Urbino Fire Department, PU (Italy) were tested by the Roland Morris Questionnaire (RMQ) and a core stability test. The RMQ test consisted in 24 items to describe the influence of LBP on your own day life activities. The core stability tests consisted in four different static plank positions, subjects' whole body on a straight line, rested on their elbows: front, reverse and both sides positions. The time was recorded at the moment the subjects lost his best position. Data were analyzed using multiple linear regression analysis. Predictor variables were: duration of plank test in front, reverse, sides positions and ratio between frontal and reverse value. Dependent variable was Roland Morris questionnaire score. Results: data reported a positive correlation between the RMQ values and the ratio front/reverse core stability tests values (p=0,02). Interestingly there were no significantly correlation comparing RMQ ant the core tests separately. Discussion: this abstract shows that as ratio between reverse plank and front plank rises in favour of the former ones, a rise in RMQ scoring is obtained.The firefighters that had a lack of synergy in the trunk muscles (front vs reverse), had a LBP influences in their day life activities. In conclusion, a simple method aimed at checking LBP risk has been proposed; larger sample will be necessary to validate the proposed method.