• Publications
  • Influence
Physical activity in US youth: effect of race/ethnicity, age, gender, and weight status.
PURPOSE To describe physical activity (PA) levels by race/ethnicity, age, gender, and weight status in a representative sample of US youth. METHODS Cross-sectional data from the 2003-2004 andExpand
  • 228
  • 19
KNOWME: a case study in wireless body area sensor network design
Wireless body area sensing networks have the potential to revolutionize health care in the near term. The coupling of biosensors with a wireless infrastructure enables the real-time monitoring of anExpand
  • 73
  • 6
Determining Energy Expenditure From Treadmill Walking Using Hip-Worn Inertial Sensors: An Experimental Study
We describe an experimental study to estimate energy expenditure during treadmill walking using a single hip-mounted inertial sensor (triaxial accelerometer and triaxial gyroscope). TypicalExpand
  • 44
  • 4
Toward free-living walking speed estimation using Gaussian Process-based Regression with on-body accelerometers and gyroscopes
Walking speed is an important determinant of energy expenditure. We present the use of Gaussian Process-based Regression (GPR), a non-linear, non-parametric regression framework to estimate walkingExpand
  • 47
  • 4
Physical Activity in US Youth : Impact of Race / Ethnicity , Age , Gender , & Weight Status
Purpose—To describe physical activity (PA) levels by race/ethnicity, age, gender, and weight status in a representative sample of U.S. youth. Methods—Cross-sectional data from the 2003–4 and 2005–6Expand
  • 50
  • 4
KNOWME: An Energy-Efficient Multimodal Body Area Network for Physical Activity Monitoring
The use of biometric sensors for monitoring an individual’s health and related behaviors, continuously and in real time, promises to revolutionize healthcare in the near future. In an effort toExpand
  • 21
  • 4
Recognition of physical activities in overweight Hispanic youth using KNOWME Networks.
BACKGROUND KNOWME Networks is a wireless body area network with 2 triaxial accelerometers, a heart rate monitor, and mobile phone that acts as the data collection hub. One function of KNOWME NetworksExpand
  • 21
  • 1
Energy estimation of treadmill walking using on-body accelerometers and gyroscopes
Walking is the most common activity among people who are physically active. Standard practice physical activity characterization from body-mounted inertial sensors uses accelerometer-generatedExpand
  • 14
  • 1
Hierarchical linear models for energy prediction using inertial sensors: a comparative study for treadmill walking
Walking is a commonly available activity to maintain a healthy lifestyle. Accurately tracking and measuring calories expended during walking can improve user feedback and intervention measures.Expand
  • 6
  • 1
Stress and abdominal fat: preliminary evidence of moderation by the cortisol awakening response in Hispanic peripubertal girls.
Stress and the cortisol awakening response (CAR) have been independently linked to increases in abdominal fat depots. This cross-sectional study examined the CAR as a moderator of the associationExpand
  • 30