for group NL,female (p < 0.05); lower BMI (0.001) and previous history of back pain (p = 0.003); low scores on health self-assessment(p < 0.0001); familial history of back pain (p = 0.003); chronic headaches (p = 0.002); chronic use of analgesics (< 0.001);diffuse pain (p = 0.025); VAS for diffuse pain (p = 0.01); number of tender points (p ≤ 0.001); morning stiffness in the spine (p = 0.02) and low quality of life according to SF-36 domains: physical functioning, body pain, general health,vitality, social functioning (p = 0,01). Though not statistically significant, there was a tendency toward higher quality of life in the role physical and mental health domains of the SF-36(Tables 1–4