Participants will come to our facility for the first initial evaluation session where a history interview will be conducted to gather demographic data such as age, gender, height, weight, race/ethnicity and past medical/surgical history. The following baseline data will be collected: a) two trials of 6 minute walk test, b) respiratory muscle strength (PImax), c) comfortable walking speed, d) hand grip strength, and e) single limb stance time. During these testings, heart rate and heart rhythms will be continuously recorded via a holter monitor. During the rest breaks, research participants will fill out two quality of life questionnaires (SF-36, Minnesota Living with Heart Failure Questionnaire). After rest breaks, participants will then repeat the six-minute walk test.