Church-based Intervention to Improve Physical Function

Inclusion Criteria: Churches (Community-level): * Membership of 300 or more adults * Located in Cook, Lake, Dupage, Will, McHenry, Kane, or Kendall counties Participants (Individual-level): * Age 40 or older * Have mobility limitations (defined as SPPB score of ≤9) * Ambulatory, defined as able to get out of a chair and walk without assistance without using a straight cane * Able to speak and read English * Attend recruitment church; and * Safe to begin an exercise program, which will be determined using the Exercise Assessment and Screening for You (EASY) Tool. Exclusion Criteria: Participants (Individual-level): * Severe cognitive impairment, defined as five or more errors on the Short-Portable Mental Status Questionnaire * Unable to consistently attend group classes at a scheduled time due to lack of reliable transportation, schedule conflicts, travel, plans to relocate, upcoming surgery, etc. * Participating in a medically supervised rehabilitation program such as cardiac rehab * Inpatient treatment for a psychiatric condition within the past 6 months, or currently receiving treatment for schizophrenia or other serious psychiatric illness * Contraindications to exercise determined using the EASY/healthcare follow-up * Congestive heart failure New York Health Association (NYHA) Class I or higher; unstable angina; heart attack or stroke within past 6 months * Visual or hearing impairment.