Articles Aging Aging: The Health Care Challenge ExcerptMultiple Sclerosis Tai Chi Tai Chi and fall reductions in older adults: a randomized controlled trial. Tai Chi: improving functional balance and predicting subsequent falls in older persons. Community-based tai chi and its effect on injurious falls, balance, gait, and fear of falling in older people. Reduction in fear of falling through intense tai chi exercise training in older, transitionally frail adults.