School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand.
Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
Sensors (Basel). 2023 Sep 2;23(17):7615. doi: 10.3390/s23177615.
Measurement of real-world physical activity (PA) data using accelerometry in older adults is informative and clinically relevant, but not without challenges. This review appraises the reliability and validity of accelerometry-based PA measures of older adults collected in real-world conditions. Eight electronic databases were systematically searched, with 13 manuscripts included. Intraclass correlation coefficient (ICC) for were: walking duration (0.94 to 0.95), lying duration (0.98 to 0.99), sitting duration (0.78 to 0.99) and standing duration (0.98 to 0.99). ICCs for ranged from 0.24 to 0.82 for step counts and 0.48 to 0.86 for active calories. ranged from 5864 to 10,832 steps and for active calories from 289 to 597 kcal. ICCs for for step count were 0.02 to 0.41, and for active calories 0.07 to 0.93. for step count ranged from 0.83 to 0.98. Percentage of agreement for walking ranged from 63.6% to 94.5%; for lying 35.6% to 100%, sitting 79.2% to 100%, and standing 38.6% to 96.1%. between step count and criteria for moderate-to-vigorous PA was = 0.68 and 0.72. Inter-rater reliability and criterion validity for walking, lying, sitting and standing duration are established. Criterion validity of step count is also established. Clinicians and researchers may use these measures with a limited degree of confidence. Further work is required to establish these properties and to extend the repertoire of PA measures beyond "volume" counts to include more nuanced outcomes such as intensity of movement and duration of postural transitions.
使用加速度计测量老年人的真实世界体力活动 (PA) 数据具有信息性和临床相关性，但并非没有挑战。本综述评估了在真实环境中收集的老年人基于加速度计的 PA 测量的可靠性和有效性。系统地检索了 8 个电子数据库，共纳入 13 篇文献。 的组内相关系数 (ICC) 为：行走时长 (0.94 至 0.95)、卧床时长 (0.98 至 0.99)、坐姿时长 (0.78 至 0.99) 和站立时长 (0.98 至 0.99)。步数的 ICC 范围为 0.24 至 0.82，活跃卡路里的 ICC 范围为 0.48 至 0.86。步数范围为 5864 至 10832 步，活跃卡路里范围为 289 至 597 千卡。对于步数，ICC 为 0.02 至 0.41，对于活跃卡路里，ICC 为 0.07 至 0.93。对于活跃卡路里，ICC 为 0.83 至 0.98。对于步数，百分比一致性为 63.6%至 94.5%；对于卧床，百分比一致性为 35.6%至 100%；对于坐姿，百分比一致性为 79.2%至 100%；对于站立，百分比一致性为 38.6%至 96.1%。对于中高强度体力活动，步数与标准之间的相关系数 = 0.68 和 0.72。行走、卧床、坐姿和站立时长的组内一致性和标准效度已经确立。步数的标准效度也已经确立。临床医生和研究人员可以在一定程度上有信心地使用这些指标。还需要进一步的工作来确立这些特性，并将 PA 测量的范围从“量”的计数扩展到包括运动强度和姿势转换持续时间等更细致的结果。
