We conducted a survey about recent surgical procedures on a large connected population and requested each individual’s permission to access data from commercial wearable devices they may have been wearing around the time of the procedure. For subcohorts of 66–118 patients who reported having a weight loss procedure and who had dense Fitbit data around their procedure date, we examined several daily measures of behavior and physiology in the 12 weeks leading up to and the 12 weeks following their procedures. We found that the weeks following weight loss operations were associated with fewer daily total steps, smaller proportions of the day spent walking, lower resting and 95th percentile heart rates, more total sleep time, and greater sleep efficiency. We demonstrate that consumer-grade activity trackers can capture behavioral and physiological changes resulting from weight loss surgery and these devices have the potential to be used to develop measures of patients’ postoperative recovery that are convenient, sensitive, scalable, individualized, and continuous.

中文翻译：

---

减肥手术患者的连续数字评估

我们对大量互联人群进行了一项关于近期外科手术的调查，并要求每个人都允许访问他们在手术期间可能一直佩戴的商用可穿戴设备中的数据。对于 66-118 名报告进行过减肥手术并且在手术日期前后拥有密集 Fitbit 数据的患者的子队列，我们​​检查了手术前 12 周和手术后 12 周内的多项日常行为和生理指标。我们发现，减肥手术后的几周与每日总步数减少、一天中步行的比例更小、休息和 95% 的心率、更多的总睡眠时间和更高的睡眠效率相关。