Shared joy in exercise may keep older adults moving

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Experiment 4A: We will follow the standard exclusion protocol used in previous Fit \& Strong! studies (e.g., Hughes et al., 2004; 2006). The participant's physician will be contacted for clearance to participate if they have a history of high blood pressure, or experience dizziness, lightheadedness, or chest pain or pressure during physical activities (walking, climbing stairs, and household chores, etc.) (see document: "E4\_NeedforPhysicianScreeningQuestionnaire.docx"). Additionally, physicians will be contacted if participants indicate that they fall, feel unsteady, or use an assistive walking or standing device. For these conditions and any special considerations that a participant may express, physicians will be contacted for clearance. Experiment 4B: Only participants who participated in Experiment 4A are eligible to participate in Experiment 4B. Exclusion Criteria: * Experiment 4A: We will follow the standard exclusion protocol used in previous Fit \& Strong! studies (e.g., Hughes et al., 2004; 2006). For instance, participants will be excluded for joint steroid injections within 3 months, knee or hip surgery within the previous 6 months or next year, rheumatoid arthritis or other systemic inflammatory arthritis, or uncontrolled diabetes. The participant's physician will be contacted for clearance to participate if they have a history of high blood pressure, or experience dizziness, lightheadedness, or chest pain or pressure during physical activities (walking, climbing stairs, and household chores, etc.) (see document: "E4\_NeedforPhysicianScreeningQuestionnaire.docx"). Additionally, physicians will be contacted if participants indicate that they fall, feel unsteady, or use an assistive walking or standing device. For these conditions and any special considerations that a participant may express, physicians will be contacted for clearance (see document: "StatementofMedicalClearanceforExercise.docx" and "CoverLetterforMedicalClearanceforExercise.docx"). Experiment 4B: Participants who did not participate in Experiment 4A are not eligible to participate in Experiment 4B.