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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
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Related Experiment Video

Updated: Mar 30, 2026

Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data
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Using GPS Data to Study Neighborhood Walkability and Physical Activity.

Andrew G Rundle1, Daniel M Sheehan1, James W Quinn1

  • 1Department of Epidemiology, Mailman School of Public Health, New York, New York.

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|November 13, 2015
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Summary

Neighborhood walkability influences how residents use local spaces and their total physical activity. Higher walkability in utilized areas correlates with increased moderate-equivalent physical activity.

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Area of Science:

  • Urban planning and public health
  • Environmental psychology
  • Geographic information systems (GIS)

Background:

  • Neighborhood walkability, characterized by urban form supporting pedestrian activity, is hypothesized to increase physical activity.
  • Limited research exists on how walkability affects residents' neighborhood space utilization and overall physical activity levels.

Purpose of the Study:

  • To investigate the relationship between neighborhood walkability, the spatial extent of areas utilized by residents, and their total physical activity.

Main Methods:

  • GPS loggers and accelerometers collected mobility and physical activity data from 803 New York City residents over one week.
  • Neighborhood space utilization was defined by a minimum convex polygon around GPS waypoints within 1 km of home.
  • Walkability was assessed using a scale calculated for utilized and non-utilized neighborhood areas.

Main Results:

  • Utilized neighborhood space was associated with street intersection density (positive) and residential/subway stop density (negative).
  • Walkability scores were higher in utilized compared to non-utilized neighborhood areas.
  • Increased neighborhood walkability in utilized areas correlated with 32% more moderate-equivalent physical activity.

Conclusions:

  • Neighborhood walkability is linked to the specific areas residents utilize within their neighborhoods.
  • Higher neighborhood walkability is associated with greater total weekly physical activity.