TY  - JOUR
AU  - Pépin, Jean Louis
AU  - Bruno, Rosa Maria
AU  - Yang, Rui-Yi
AU  - Vercamer, Vincent
AU  - Jouhaud, Paul
AU  - Escourrou, Pierre
AU  - Boutouyrie, Pierre
PY  - 2020
DA  - 2020/6/19
TI  - Wearable Activity Trackers for Monitoring Adherence to Home Confinement During the COVID-19 Pandemic Worldwide: Data Aggregation and Analysis
JO  - J Med Internet Res
SP  - e19787
VL  - 22
IS  - 6
KW  - wearable activity trackers
KW  - pandemic
KW  - COVID-19
KW  - home confinement
KW  - lockdown
KW  - monitoring
KW  - wearables
KW  - tracking
AB  - Background: In the context of home confinement during the coronavirus disease (COVID-19) pandemic, objective, real-time data are needed to assess populations’ adherence to home confinement to adapt policies and control measures accordingly. Objective: The aim of this study was to determine whether wearable activity trackers could provide information regarding users' adherence to home confinement policies because of their capacity for seamless and continuous monitoring of individuals’ natural activity patterns regardless of their location. Methods: We analyzed big data from individuals using activity trackers  (Withings) that count the wearer’s average daily numberof steps in a number of representative nations that adopted different modalities of restriction of citizens’ activities. Results: Data on the number of steps per day from over 740,000 individuals around the world were analyzed. We demonstrate the physical activity patterns in several representative countries with total, partial, or no home confinement. The decrease in steps per day in regions with strict total home confinement ranged from 25% to 54%. Partial lockdown (characterized by social distancing measures such as school closures, bar and restaurant closures, and cancellation of public meetings but without strict home confinement) does not appear to have a significant impact on people’s activity compared to the pre-pandemic period. The absolute level of physical activity under total home confinement in European countries is around twofold that inChina. In some countries, such as France and Spain, physical activity started to gradually decrease even before official commitmentto lockdown as a result of initial less stringent restriction orders or self-quarantine. However, physical activity began to increaseagain in the last 2 weeks, suggesting a decrease in compliance with confinement orders. Conclusions: Aggregate analysis of activity tracker data with the potential for daily updates can provide information regarding adherence to home confinement policies. 
SN  - 1438-8871
UR  - http://www.jmir.org/2020/6/e19787/
UR  - https://doi.org/10.2196/19787
UR  - http://www.ncbi.nlm.nih.gov/pubmed/32501803
DO  - 10.2196/19787
ID  - info:doi/10.2196/19787
ER  -