Age-related declines in physical and cognitive functioning and the associated adverse outcomes such as restricted mobility, cognitive impairment, and falls ultimately result in a decrease of older adults' quality of life. In the light of the demographic change, these age-related declines gain special importance. Attempting to counteract these declines, previous studies have revealed that simultaneous motor and cognitive training may be equally or even more effective than separate training. In fact, simultaneous motor-cognitive training has shown to improve various physical, cognitive, and psychological functions in older adults - for instance balance, gait, executive control, processing speed, exercise enjoyment, depressive symptoms, and quality of life. However, most training programs are provided face-to-face, and accessibility is a major concern for older adults, especially in the post-pandemic era. Besides, due to the demographic change there is an increased need for long-term care/treatment challenging the health care system (in terms of finance, time, and personnel). Home-based rehabilitation programs offer a cost-effective solution to these problems.

However, previous research either investigated home-based training approaches based on separate motor-cognitive training, or, in case of simultaneous motor-cognitive training approaches, these have been tested in rather specific older populations (e.g., stroke survivors, Parkinson patients, older adults with cognitive impairment) or in healthy older adults. Yet, simultaneous motor-cognitive training in the home setting should be feasible and effective in a broader population of older adults especially in those without long-term access to traditional rehabilitation interventions accompanying them to full recovery. For this reason, this study aims to test the feasibility of a personalized, simultaneous motor-cognitive home-based training approach based on exergames for geriatric patients and to evaluate its effectiveness compared to usual care alone on physical and cognitive functions as well as on fall-related self-efficacy.

Potential participants will be screened and if eligible, asked if they are interested in partaking. All eligible and interested possible participants will be orally informed about the study and receive a written study information explaining the aim of the study, procedures, risks, and benefits of participation, as well as their rights and duties in case of participation. All participants will sign a written consent form, before any study-specific actions are performed.

The study will start with a baseline assessment. Then, participants will be randomized to either the intervention or the control group applying permuted block randomization. Subsequently, participants of the intervention group will perform 6 supervised, personalized motor-cognitive training sessions in a rehabilitation centre (ideally within 2 weeks) for about 20-30 minutes per session (familiarization period). Afterwards, participants of the intervention group will continue the training independently at home for 10 weeks, 3 times/week for about 20-30 minutes with the investigators supervising them via phone calls and regular personal visits. Physical and cognitive tests will be the basis for individual training plans which will further on be regularly adapted based on progression rules. All motor-cognitive training sessions in both intervention phases will be additional to usual care. The control group receives no additional training besides usual care. Participants of all groups will conduct 3 measurement sessions: (1) T1 (baseline assessments), (2) T2 (pre-intervention, after familiarization period, before starting the home-based training), (3) T3 (post-intervention assessment).