The study needed to be stopped due to the COVID-19 pandemic.

This study will investigate the impact of land based or aquatic based group exercise on the balance, walking, balance confidence, and quality of life of people with idiopathic Parkinson disease. Participants will be randomized to participate in a land based or aquatic based group exercise program 2 times per week for 12 weeks. Prior to and after participation, balance, walking, quality of life, and balance confidence will be measured by a blinded examiner.

Inclusion Criteria:

• adults over the age of 18 who have been diagnosed with idiopathic Parkinson disease.
• stable dose of levadopa medication for 30 days prior to study initiation
• able to walk 20 feet without physical assistance
• a referral from a physician to participate in physical therapy

Exclusion Criteria:

individuals with:

• uncontrolled cardiovascular or pulmonary conditions
• deep vein thrombosis in the last 6 months
• the use of breathing tube or feeding tube
• those with an extreme fear of exercising in the water
• an active dermatological condition (including eczema, psoriasis, or open wound) -any other neurological condition other than Parkinson disease
• a musculoskeletal condition that would impact their ability to participate in the exercise group
• cognitive impairment (a score of less than 24/30 on the Mini Mental Status Examination)