Oh my aching back: Do yoga, tai chi or qigong help?

About 80 percent of Americans will experience low back pain at some point. Patients are often advised to manage their back pain with exercise and mind-body interventions. But, do they really help? Researchers compared and contrasted yoga, tai chi and qigong, and found them to be effective for treatment of low back pain, reporting positive outcomes such as reduction in pain or psychological distress such as depression and anxiety, reduction in pain-related disability, and improved functional ability.