PAAWS (Physical Activity Assessment using Wearable Sensors) Study
Our goal in the PAAWS Study is to collect close to 300 week-long datasets from a range of diverse adults age 18+ as they go about their lives. As they do, they wear a suite of wearable accelerometers on their bodies, and a camera that allows us to know exactly what activities they are engaged in at each moment.
Data Summary (Free-living):
- Body accelerometer data: Left wrist, right wrist, right ankle, right-side thigh, and right hip from GT9X-Link Actigraphs at 80 Hz.
- Phone accelerometer data (Android): Mobile phone at ~50 Hz.
- Phone accelerometer data (iPhone): GT9X-Link at 80 Hz attached to mobile phone case.
- Other phone data (Android): Screen unlock.
- Other phone data (iPhone): TBA.
- Annotation data: Annotations of physical activity, sedentary behavior, some sleep behavior, and sensor non-wear periods are derived from a front-facing video camera, with video gaps filled in from self-report and video-aided recall.
Data Summary (Lab):
- Accelerometer data: Left wrist, right wrist, left ankle, right ankle, left thigh, right thigh, right hip from GT9X-Link Actigraphs at 80 Hz.
- Phone accelerometer data (Android): Mobile phone at ~50 Hz.
- Phone accelerometer data (iPhone): GT9X-Link at 80 Hz attached to mobile phone case.
- Metabolic data: Respiratory frequency (Rf), tidal volume (VT), ventilation (VE), VO2, VO2/Kg, METS, and energy expenditure (EEm) for some activities (treadmill, indoor bicycle, other indoor activities) from a Cosmed QuarkPFT. Heart rate (HR) for all lab activities from a Polar chest strap monitor.
- Other phone data (Android): Screen unlock.
- Other phone data (iPhone): TBA.
- Annotation data: Annotations of physical activity and sedentary behavior are derived from a third-person-controlled video camera.
Data Summary (Home sleep):
- Polysomnograpy data (Up to two nights): Polysomnography data acquired from the Nox A1 PSG System.
- Accelerometer data: Left wrist, right wrist, right ankle, right-side thigh, and right hip from GT9X-Link Actigraphs at 80 Hz.
- Other phone data (Android): Screen unlock.
- Other phone data (iPhone): TBA.
- Annotation data (Up to two nights): Wake/sleep labeling and sleep stages (labeled from all PSG data every 30 seconds).
Methods:
We will be linking from this website to detailed descriptions of our codebook, activity ontology, methods, and manual of procedures. We will also provide details on all the sensors used so that other research groups can replicate our protocols. Stay tuned.