Department of Anatomy and Neurobiology, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, United States.
The Framingham Heart Study, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, United States.
JMIR Aging. 2024 Oct 25;7:e60209. doi: 10.2196/60209.
Physical activity has emerged as a modifiable behavioral factor to improve cognitive function. However, research on adherence to remote monitoring of physical activity in older adults is limited.
This study aimed to assess adherence to remote monitoring of physical activity in older adults within a pilot cohort from objective user data, providing insights for the scalability of such monitoring approaches in larger, more comprehensive future studies.
This study included 22 participants from the Boston University Alzheimer's Disease Research Center Clinical Core. These participants opted into wearing the Verisense watch as part of their everyday routine during 14-day intervals every 3 months. Eighteen continuous physical activity measures were assessed. Adherence was quantified daily and cumulatively across the follow-up period. The coefficient of variation was used as a key metric to assess data consistency across participants over multiple days. Day-to-day variability was estimated by calculating intraclass correlation coefficients using a 2-way random-effects model for the baseline, second, and third days.
Adherence to the study on a daily basis outperformed cumulative adherence levels. The median proportion of adherence days (wearing time surpassed 90% of the day) stood at 92.1%, with an IQR spanning from 86.9% to 98.4%. However, at the cumulative level, 32% (7/22) of participants in this study exhibited lower adherence, with the device worn on fewer than 4 days within the requested initial 14-day period. Five physical activity measures have high variability for some participants. Consistent activity data for 4 physical activity measures might be attainable with just a 3-day period of device use.
This study revealed that while older adults generally showed high daily adherence to the wearable device, consistent usage across consecutive days proved difficult. These findings underline the effectiveness of wearables in monitoring physical activity in older populations and emphasize the ongoing necessity to simplify usage protocols and enhance user engagement to guarantee the collection of precise and comprehensive data.
身体活动已成为改善认知功能的可改变行为因素。然而，关于老年人远程监测身体活动依从性的研究有限。
本研究旨在从客观用户数据评估老年人远程监测身体活动的依从性，为此类监测方法在更大、更全面的未来研究中的可扩展性提供见解。
本研究纳入了来自波士顿大学阿尔茨海默病研究中心临床核心的 22 名参与者。这些参与者选择在每 3 个月的 14 天间隔内佩戴 Verisense 手表作为日常生活的一部分。评估了 18 项连续的身体活动测量。依从性每天和整个随访期累积进行量化。变异系数是评估多个日期间参与者数据一致性的关键指标。使用 2 路随机效应模型计算基线、第 2 天和第 3 天的日内相关系数，以估计日常变化。
在日常基础上，对研究的依从性优于累积依从性水平。佩戴时间超过一天的 90%的依从性天数的中位数比例为 92.1%，IQR 范围为 86.9%至 98.4%。然而，在累积水平上，本研究中有 32%（7/22）的参与者依从性较低，在要求的最初 14 天内，设备佩戴时间少于 4 天。对于一些参与者来说，有 5 项身体活动测量指标的变异性很高。仅使用 3 天的设备使用期，可能就可以获得 4 项身体活动测量指标的一致活动数据。
本研究表明，虽然老年人通常对可穿戴设备具有较高的日常依从性，但连续多天的一致使用仍然具有挑战性。这些发现强调了可穿戴设备在监测老年人身体活动方面的有效性，并强调了简化使用协议和增强用户参与度以保证收集精确和全面数据的必要性。
