Department of Public Health, University of Turku and Turku University Hospital, Finland.
Centre for Population Health Research, University of Turku and Turku University Hospital, Finland.
J Gerontol A Biol Sci Med Sci. 2022 Mar 3;77(3):579-587. doi: 10.1093/gerona/glab107.
Effective strategies to reverse the increasing trend of sedentary behavior after retirement are needed. The aim of this study was to examine the effect of 12-month activity tracker-based intervention on daily total and prolonged sedentary time (≥60 minutes) among recent retirees.
Randomization to intervention and control groups was performed to 231 retirees (mean age 65.2 [SD 1.1] years, 83% women). Intervention participants wore a consumer-based wrist-worn activity tracker (Polar Loop 2, Polar, Kempele, Finland), including daily activity goal, every day and night for 12 months. The activity tracker also gave vibrating reminders to break up uninterrupted inactivity periods after 55 minutes. A wrist-worn triaxial ActiGraph wGT3X-BT accelerometer was used to measure sedentary time at baseline and at 3-, 6-, and 12-month time points.
The use of an activity tracker did not reduce daily total or prolonged sedentary time over 12 months (p values for time * group interaction 0.39 and 0.27, respectively). In the post hoc analysis focusing on short- and medium-term effects on prolonged sedentary time, no differences between the intervention and control groups over 3 months were found, but a tendency for a greater decrease in prolonged sedentary time in the intervention group over 6 months was seen (mean difference in changes between the groups 29 minutes, 95% CI -2 to 61).
The activity tracker with inactivity alerts did not elicit changes in sedentary time over 12 months among recent retirees. Alternative approaches may be needed to achieve long-term changes in sedentary time among retirees. Clinical Trials registration Number: NCT03320746.
需要采取有效的策略来扭转退休后久坐行为不断增加的趋势。本研究旨在检验基于 12 个月活动追踪器的干预对近期退休者日常总久坐时间（≥60 分钟）和长时间久坐时间（≥60 分钟）的影响。
将 231 名退休者（平均年龄 65.2[1.1]岁，83%为女性）随机分为干预组和对照组。干预组参与者佩戴一款消费者级别的腕戴式活动追踪器（Polar Loop 2，Polar，芬兰凯佩莱），包括日常活动目标，每天 24 小时佩戴 12 个月。活动追踪器还会在连续静止 55 分钟后发出振动提醒，以打破长时间的静止状态。腕戴式三轴 ActiGraph wGT3X-BT 加速度计用于在基线和 3、6 和 12 个月时点测量久坐时间。
使用活动追踪器在 12 个月内并未减少日常总久坐时间或长时间久坐时间（时间*组间交互作用的 p 值分别为 0.39 和 0.27）。在关注短期和中期对长时间久坐时间影响的事后分析中，在 3 个月内，干预组与对照组之间没有差异，但在 6 个月内，干预组中长时间久坐时间的减少趋势更大（两组之间变化的平均差异为 29 分钟，95%置信区间-2 至 61）。
在近期退休者中，带有静止提醒的活动追踪器在 12 个月内未引起久坐时间的变化。可能需要采取替代方法来实现退休者久坐时间的长期变化。临床试验注册号：NCT03320746。
