Acupuncture appears to be associated with improvement of dyspnea (labored breathing) on exertion, in patients with chronic obstructive pulmonary disease ( COPD), according to a study published online on Monday by the professional journal Archives of Internal Medicine. The management of dyspnea is an important target in the treatment of COPD, a common respiratory disease characterized by irreversible airflow limitation. COPD is predicted to be the third leading cause of death worldwide by 2020, according to the study background. Masao Suzuki of Kyoto University and colleagues conducted a randomized controlled trial from July 2006 through March 2009. A total of 68 patients diagnosed with COPD participated, and 34 were assigned to a real acupuncture group for 12 weeks, plus daily medication. The other 34 were assigned to a placebo acupuncture group in which the needles were blunt (and appeared to, but did not enter the skin). The primary measure was the evaluation of a six-minute walk test on a Borg scale where zero meant \"breathing very well, barely breathless\" and 10 signified \"severely breathless.\" After 12 weeks of treatment, the Borg scale score after the six- minute walk test improved from 5.5 to 1.9 in the real acupuncture group. No improvement was seen in the Borg scale score in the placebo acupuncture group before and after treatment (4.2 and 4.6, respectively), according to the study results. \"Randomized trials with larger sample sizes and longer-term interventions with follow-up evaluations are necessary to confirm the usefulness of acupuncture in COPD treatment,\" the authors conclude.