Qigong for type 2
Lee MS, Chen KW, Choi TY, Ernst E.
Standard Research, Korea Institute of Oriental Medicine, Daejeon
305-811, South Korea.
OBJECTIVES: To summarize and critically
evaluate the evidence available from clinical trials (CTs)
of qigong for patients with type 2 diabetes.
METHODS: We have searched the literature
using 15 databases from their respective inceptions through March 2009 without
language restrictions. Risk of bias was assessed using Cochrane criteria.
RESULTS: Nine CTs,
which included three randomized clinical trials (RCTs),
one controlled clinical trial (CCT) and five uncontrolled observational studies
(UOSs), met our inclusion criteria. Three RCTs compared qigong plus usual care (including drug
therapy) with usual care alone. The quality of these RCTs
was poor. Their results suggested favorable effects of qigong on glycosylated hemoglobin (HbA1c), 2h plasma glucose (2hPG),
insulin sensitivity, and blood viscosity. One CCT compared qigong with no
treatment and failed to show favorable effects of qigong on fasting plasma
glucose (FPG), 2hPG, HbA1c and insulin sensitivity.
All UOSs reported beneficial effects of qigong on FPG
CONCLUSION: Currently there are few rigorous
trials testing the effectiveness of qigong for type 2 diabetes. The studies
that are available are of low methodological quality. Collectively this
evidence is insufficient to suggest that qigong is an effective treatment for
type 2 diabetes. Rigorously designed trials are warranted to answer the many
questions that remain open.