Mind over motion: mental rehearsal may help older adults turn and walk better

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

Inclusion Criteria: * Age 65 years or older. * Self-report difficulty with turning, balance, or walking-related mobility tasks. * Self-report increased fall risk, including a history of falls, fall-related injury, multiple falls within the previous year, or fear of falling due to balance or walking concerns. * Report some difficulty with walking-related activities, such as turning, walking longer distances, climbing stairs, or completing household activities. * Willingness to be randomized to either study group and complete all study procedures. * Living independently in the community and able to travel to the research site. * Ability to perform motor imagery, defined by a qualifying score on the Motor Imagery Questionnaire - Revised Second Version. * Access to an internet-connected computer capable of playing videos with sound in a quiet environment. * Ability to provide informed consent. Exclusion Criteria: * Diagnosis or symptoms of a neurological disorder or central nervous system injury, including Alzheimer's disease, Parkinson's disease, multiple sclerosis, or stroke. * Contraindications to transcranial magnetic stimulation (TMS) or non-invasive brain stimulation procedures. * Use of medications known to substantially affect central nervous system function. * Severe arthritis or musculoskeletal impairment that would limit safe participation in mobility training. * Severe obesity (body mass index greater than 35 kg/m²). * Significant cardiovascular, pulmonary, renal, or other uncontrolled medical conditions that may limit safe participation. * Myocardial infarction or major cardiac surgery within the previous year. * Cancer treatment within the previous year, excluding nonmelanoma skin cancer or cancers with excellent prognosis. * Uncontrolled hypertension at rest (systolic blood pressure \>180 mmHg and/or diastolic blood pressure \>100 mmHg). * Bone fracture or joint replacement within the previous 6 months. * Current participation in physical therapy or cardiopulmonary rehabilitation targeting lower extremity function. * Current enrollment in another clinical trial that may interfere with study participation or outcomes. * Inability to communicate effectively with study personnel or inability to understand English-language study procedures. * Plans to relocate from the area during the study period. * Any additional safety or compliance concerns identified by the investigative team.