John at MyPHysicalTherapySpace points out an interesting new study on the effects of physical therapy on low back pain.

This study evaluated the effectiveness of physical therapy exercise sessions and advice vs. sham exercises and advice over a 12 month period for individuals with subacute low back pain (lasting longer than 6 weeks but less than 12 weeks).

Surprising results: "Exercise and advice were each slightly more effective than placebo at 6 weeks but not at 12 months."