(HealthDay)—Twelve weeks of spinal manipulative therapy (SMT) combined with exercise therapy (ET) is more effective than ET alone over a one-year period for adolescents with chronic low back pain (LBP), according to a study published in the July issue of Pain.

Roni Evans, Ph.D., from the University of Minnesota in Minneapolis, and colleagues compared 12 weeks of SMT combined with ET to ET alone among 185 adolescents aged 12 to 18 years with chronic LBP. LBP severity was assessed at 12, 26, and 52 weeks; 179 adolescents provided data at 12 weeks and 174 at 26 and 52 weeks.

The researchers observed a larger reduction in LBP severity over the course of one year with adding SMT to ET (P = 0.007). At the end of treatment, the group difference in LBP severity was small (mean difference, 0.5; P = 0.08), but increased at weeks 26 (mean difference, 1.1; P = 0.001) and 52 (mean difference, 0.8; P = 0.009). SMT with ET performed better than ET alone for disability and improvement (P = 0.04 and 0.02, respectively) at 26 weeks. At all time points, the SMT with ET group reported significantly greater satisfaction with care (P ≥ 0.02). No serious treatment-related adverse events were reported.

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