On our study, when we ran simple statistical comparisons between the back pain suffers and nonsufferers in a young adult population, we observed some factors that showed a clear association with lumbar pain, namely female gender, lower BMI, personal or family history of back pain, morning stiffness in the lumbar spine, the use of analgesics, low quality of life, frequent headaches, diffuse pain and higher number of tender points. Some of these variables have beencited previously in studies conducted on adults. However, the association between lower BMI and lumbar pain that emerged from our sample was quite surprising. Studies with larger samples would have to be conducted in order to evaluate this association