چکیده (انگلیسی):

Despite the large number of articles published in the medical literature advocating the use of Tai Ji Quan for a wide variety of health-related
outcomes, there has been little systematic broad-scale implementation of these programs. It may be argued that the lack of funding from organizations
capable of implementing and overseeing large-scale programs, such as governmental health agencies or national non-governmental
organizations concerned with healthcare for older adults, is to blame. However, the evidence these organizations need to justify underwriting
such programs is in short supply because of conflicting priorities and standards related to determining the efficacy and effectiveness of Tai Ji
Quan. Establishing efficacy through acceptable designs such as randomized controlled trials involves strict protocols to ensure meaningful
internal validity but different approaches are needed to demonstrate meaningful effectiveness (external validity) outside the study setting. By
examining the quality, quantity, and relative proportions of the randomized controlled trials, systematic reviews, and dissemination studies
reported in the medical literature, this paper highlights the disparity in emphasis between efficacy and effectiveness research that has impeded
the development of a cohesive literature on Tai Ji Quan and concludes that until more researchers develop a systematic, long-range commitment
to investigating its health-related benefits, the research related to Tai Ji Quan will remain fractured and sporadic, limiting the incentive of large
funding agencies to support its wide-spread use.