"direction-oriented motion and balanced short-stance tai chi" model: Biomechanical characteristics and practicability

Previous clinical studies on Tai Chi have often randomly adopted Tai Chi movements that are complicated and not systematic for the elderly and beginners to learn. This study aimed to develop a direction-based and easy-to-learn Tai Chi model, the practicability of which was also tested. This model adopted seven typical movements of the Yang-style Tai Chi form that were divided into four motion directions. The biomechanical characteristics, including muscle activation, body center of gravity movement, and center of pressure of the practitioner during Tai Chi were measured to identify the model's characteristics and practicability. After three months of training, the patterns of measured biomechanical characteristics of the beginners were similar to those of the masters. This model maintains the principal features of traditional Tai Chi and allows beginners to more easily practice the movements within a short period of time. Beginners can also use this model under relaxed conditions, with the correct kinesiology of Tai Chi motions, and quickly practice Tai Chi at a level similar to that of masters.