The ability to walk under normal and cognitive dual task conditions is essential for safe mobility in older adults. However, while assessments of gait provide important health information, they have been limited to laboratory settings. We aimed to create an easy-to-use smartphone App enabling remote dual task walking assessments, and to demonstrate its reliability and validity in relatively healthy younger and older adults. The iPhone-based App utilized multi-media instructions and the phone's internal motion sensors to record movements during normal walking and walking with simultaneous serial-subtractions, with the phone placed in the user's pants pocket. Fourteen younger and 12 older adults completed two lab visits, during which data were acquired by the App and GAITRite mat over multiple normal and dual task walking trials. Participants also used the App to complete assessments in their homes on three separate days. Outcomes included average stride time and the dual-task cost to stride time. Across all detected strides in laboratory trials, derived outcome measures from the App were highly correlated with those derived from the GAITRite mat (Stride Time: p<0.001, r2 =0.99. Dual-task cost: p<0.001, r2 =0.98). These correlations were unaffected by age group, walking condition, and pocket tightness. Moreover, across trials, gait metrics demonstrated excellent test-retest reliability, both within and between laboratory visits and home-based assessments (ICC: 0.79-0.90). These results suggest that dual task walking assessments are valid and can be reliably administered in remote settings in relatively healthy younger and older adults.
Patient portals can be beneficial for older adults who manage their own health. However, there is a lack of research on older adults' experience using patient portals in the community. The aim of this study was to assess older adults' perceived usability of patient portals they currently use. This was a secondary data analysis using selected baseline data from an online trial that tested the effects of a 3-week Theory-Based Patient Portal eLearning Program, and included 272 older adults recruited online. Data were analyzed using descriptive statistics and content analysis. Most participants owned patient portal accounts (n = 194 [71.3%]). Self-efficacy for using patient portals was relatively low (mean, 27.1; range, 0-40), and perceived usability of patient portals was also low (mean, 28.7; range, 6-42). The most-favored features of patient portals were review of medical information and eMessaging. The main difficulties in using patient portals were associated with login/access and specific portal functions. Managing multiple patient portals was a particular challenge for many participants. Findings from this study indicate the importance of providing proper levels of training and technical support to older adults to maximize use and improve outcomes of patient portal implementation.
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