ActivABLES, a tangible interaction to promote home-based exercise and physical activity of community-dwelling stroke survivors: A development paper (Preprint)

BACKGROUND Novel technical solutions are called for to promote home-based exercise and facilitate engagement in physical activity among community-dwelling stroke survivors supported by their caregivers in the home environment. Lack of knowledge and resources on what to do and how to accomplish this has been demonstrated. OBJECTIVE To describe in detail the development of a technical intervention, ActivABLES, to promote home-based exercise and physical activity engagement of community-dwelling stroke survivors with support from their informal caregivers. METHODS Technical development process of ActivABLES was guided by Human-Centred Design and participatory design/co-design as well as the Medical Research Council (MRC) framework for the development and evaluation of complex interventions. The main steps included: (a) Synthesis of the evidence supported the inclusion of balance exercises, mobility and walking exercises, exercises for the upper arm and means to decrease sedentary behavior; b) Initial user studies with qualitative data collection from individual interviews with stroke survivors and focus group interviews with informal caregivers and health professionals; c) Preliminary testing of eight prototypes with seven stroke survivors and their informal caregivers which included introduction and testing of the prototypes; d) Feasibility study of six prototypes with ten stroke survivors and their informal caregivers which included use of ActivABLES for four weeks. RESULTS After the preliminary testing of eight prototypes, four prototypes were not further developed whereas four prototypes were modified further. In addition, two new prototypes were developed, leaving six prototypes constructed for use in the feasibility study. These included: 1) ActivFOAM, a soft mat for balance exercises, 2) WalkingSTARR, an iPhone application to facilitate walking, 3) ActivBALL, a soft ball for hand exercises, 4) ActivSTICKS, two linked plastic sticks for upper arm exercises and trunk rotation and 5) the ActivLAMP and 6) the ActivTREE which both give visual feedback (lights) for progress of daily exercise and physical activities. ActivFOAM, ActivBALL and ActivSTICKS are all connected to a tablet where exercise instructions are given. All the exercise prototypes can be connected to ActivLAMP and ActivTREE to give feedback on how much exercise the user has done. Settings can be individualized and recommended daily time and/or repetition can easily be changed as the user further progresses to higher activity levels. CONCLUSIONS The development process of ActivABLES was guided by the human-centred design, with iterative testing of future users, and the MRC framework of complex intervention, with repeated process of development and testing. This process resulted in six prototypes which aim to promote home-based exercise and facilitate physical activity engagement of community-dwelling stroke survivors and were used in a feasibility study. Further research with a larger sample of stroke survivors and a more robust design is needed to substantiate these results.