JMIR Publications

ABSTRACT

Background:

In order to empower active and healthy ageing, digital solutions embed multiple modules for physical activity and cognitive health promotion, and social engagement. Integrating new empowering technologies such as digital exercise monitoring requires assessment measures and analysis procedures considering variable compliance of users with the different modules.

Objective:

The purpose of this study was to assess the influence of a tablet-based and a feedback system-based exercise module on balance and leg strength by considering the usage adherence instead of the usage of the entire multi-modular system.

Methods:

In the prospective cohort study in form of a field trial within the fit4AAL project, 83 users (67 women, 16 men, 66.2 ± 2.3 years) used the two digital exercise modules of a multi-modular physical activity promotion system for over 18 weeks. A data-driven clustering method based on the average usage frequency of the exercise modules determined the number of user types meeting the WHO-recommended training frequency of at least twice per week. Based on this usage adherence, statistical analysis was performed with features of functional performance tests (unipedal stance, 30-sec Chair Rise, Y-balance and hurdle step test) obtained six months before, instantly before and after the intervention comparing the baseline phase to the three feedback usage types of the study (using only the tablet, additionally or only the feedback system).

Results:

43 users of the determined user types met the WHO-recommended frequency of muscle-strengthening activities. 60% of these users additionally used the feedback system-based exercise module. They improved in balance compared to the users using either only the tablet or the feedback system (P=.018). In addition, they improved their leg strength within-group and compared to the control (P=.012).

Conclusions:

This study benefited from tech-savvy and physically fit participants. Considering usage adherence in future multi-modular system studies is crucial to assess the influence on functional performance of single and combined use of exercise modules.