I'd like to hear something about the patients that did Tai Chi or Yoga as part of their Stress Protocol. Any statistics?
No statistics, just my perspective, for what it's worth.
Tai Chi and Yoga, if done consciously, are a type of meditation - moving meditation. Holding the mind steady in a way that we don't run after every thought that comes into our heads has also been described as 'mindfulness'.
If a person works better with this type of practice than sitting for a period of time, then by all means, it should be practiced. There is a difference between a mindful, calm and centered moving meditation approach, compared to the atmosphere in a noisy health club, with loud music, chit-chat, laughter and a social-type of approach to the class. Not wrong, just not meditation.