Studies are also looking at the effect of tai chi on gait performance, and balance in people with Parkinson's Disease. The first study concluded that tai chi was ineffective since there was no improvement on gait performance and no improvement on the Part III score of the Unified Parkinson's Disease Rating Scale (UPDRS). The second study found that patients taking tai chi improved on their UPDRS score, Timed Up and Go test, six-minute walk and backwards walking. It did not however, show any improvements on their forward walking or their one leg stance test.