Naslov
A Pilot Study to Collect Time-Location-Activity Data Using a Mass Market Smartphone App and Fitness Tracking Device

Autori
Loh, Miranda ; Li, N ; Schieberle, Christian ; Pronk, Anjoeka ; Kuijpers, Eelco ; Sarigiannis, Denis ; Chapizanis, Dimitrios ; Karakitsios, Spiros ; Maggos, Tomas ; Stamatelopoulou, Asimina ; Špirić, Zdravko ; Bartzis, John ; Cherrie, John

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
The International Society of Exposure Science 25th Annual Meeting - October 18-22, 2015 / Blount, Ben ; LaKind, Judy - Henderson (NV) : The International Society of Exposure Science, 2015, 204-205

Skup
The International Society of Exposure Science: 25th Annual Meeting

Mjesto i datum
Henderson (NV), Sjedinjene Američke Države, 18.10.2015. - 22.10.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
activity patterns; exposure factors; sensor technology

Sažetak
It is now possible for the general public to record their location and activity using their phones and wearable fitness trackers. This provides a potentially widespread and less expensive method of collecting time-location-activity data. As part of the HEALS project (www.heals-eu.eu ), funded by the European Union 7th Framework Programme (EU FP7), a pilot study to investigate the potential use of smart consumer products in measuring personal time-location-activity information for exposure studies was conducted. Four participants in 7 cities across Europe (Athens, Edinburgh, Kozani, Stuttgart, Thessaloniki, Zagreb, Zeist/Utrecht) wore a Fitbit Flex and used the Moves app on their smartphone for approximately 1 week. The participants also wore a GPS unit, Actigraph, and filled out a time-activity log on paper for the same time period. The Moves smartphone app and the Fitbit Flex fitness tracker were compared to a GPS and paper time-activity diaries for time-location, and an Actigraph for activity. Fitbit and Actigraph steps per minute were compared using Lin’s Concordance Coefficient, and Bland Altman plots. Analyses for a subset of the participants show a moderate concordance (0.78, 95th CI = 0.77, 0.79). Scatter plots show that the concordance is highest for high intensity activity in terms of steps per minute, with a wide spread for low and moderate intensity activity. The Fitbit tended to overestimate Actigraph steps. The mean difference between Fitbit and Actigraph was -10.9 steps/min (95th CI = -11.5, -10.4), with 7% of the total points (n=6414) outside the limits of agreement (-55, 35 steps/min). Correspondence of Moves with GPS and paper log differed between people, with a 69-95% correspondence with GPS and 78-93% with the paper log. Further analyses of the complete dataset will provide information as to the potential to use Fitbit and Moves as new means of recording time-location-activity information for exposure studies.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo, Javno zdravstvo i zdravstvena zaštita

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