The health-enhancing benefits of physical activity are well established. Ongoing population physical activity surveillance is critical for benchmarking and priority-setting, especially in low- and middle-income countries (LMICs) where economic transitions have led to rapidly changing lifestyles and the rise in non-communicable diseases. Since its inception, global physical activity surveillance has relied on questionnaires, which are subject to reporting bias. Wearable devices provide opportunities to continuously measure physical activity with greater granularity across various intensities, activity types, postures and bouts. Recent evidence suggests that device-measured physical activity has a stronger association with mortality outcomes than reported physical activity.1 For decades, wearable-based surveillance systems have been in the limelight–demonstrating the potential for accurate physical activity measurements.2 Such ‘traditional’ systems involve an accelerometric sensor attached to the participant’s body and often require manual data downloading and laborious data processing. Despite improved accuracy, logistical barriers (table 1) have prevented wearables from being scaled up and implemented globally, especially in LMICs. Addressing these barriers, as per the WHO global action plan on physical activity,3 requires rethinking wearable systems, addressing logistic barriers and developing more accessible and cost-efficient systems for implementation in a wide range of countries, including LMICs (figure 1). View this table: Table 1 The current challenges of using traditional wearable systems and how new technologies can address …

中文翻译：

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我们准备好进行基于可穿戴设备的全球身体活动监测了吗？

身体活动对健康的益处已广为人知。持续的人口身体活动监测对于制定基准和确定优先事项至关重要，特别是在低收入和中等收入国家（LMIC），这些国家的经济转型导致生活方式迅速改变和非传染性疾病的增加。自成立以来，全球身体活动监测一直依赖于调查问卷，而调查问卷可能存在报告偏差。可穿戴设备提供了以更大的粒度连续测量各种强度、活动类型、姿势和回合的身体活动的机会。最近的证据表明，与报告的身体活动相比，设备测量的身体活动与死亡率结果的关联性更强。1 几十年来，基于可穿戴设备的监测系统一直备受关注，展示了准确的身体活动测量的潜力。2 这种“传统”系统涉及连接到参与者身体的加速度传感器，并且通常需要手动数据下载和费力的数据处理。尽管准确性有所提高，但物流障碍（表 1）阻碍了可穿戴设备在全球范围内的推广和实施，尤其是在中低收入国家。根据世卫组织全球身体活动行动计划3，要解决这些障碍，需要重新思考可穿戴系统，解决物流障碍，并开发更易于使用且更具成本效益的系统，以便在包括中低收入国家在内的广泛国家实施（图 1）。查看此表：表 1 使用传统可穿戴系统当前面临的挑战以及新技术如何解决……