Could a satellite-based navigation system (GPS) be used to assess the physical activity of individuals on earth?
Details
Serval ID
serval:BIB_39DE72C48784
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Could a satellite-based navigation system (GPS) be used to assess the physical activity of individuals on earth?
Journal
European Journal of Clinical Nutrition
ISSN
0954-3007 (Print)
ISSN-L
0954-3007
Publication state
Published
Issued date
05/1997
Volume
51
Number
5
Pages
338-339
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Abstract
OBJECTIVES: To test whether the Global Positioning System (GPS) could be potentially useful to assess the velocity of walking and running in humans.
SUBJECT: A young man was equipped with a GPS receptor while walking running and cycling at various velocity on an athletic track. The speed of displacement assessed by GPS, was compared to that directly measured by chronometry (76 tests).
RESULTS: In walking and running conditions (from 2-20 km/h) as well as cycling conditions (from 20-40 km/h), there was a significant relationship between the speed assessed by GPS and that actually measured (r = 0.99, P < 0.0001) with little bias in the prediction of velocity. The overall error of prediction (s.d. of difference) averaged +/-0.8 km/h.
CONCLUSION: The GPS technique appears very promising for speed assessment although the relative accuracy at walking speed is still insufficient for research purposes. It may be improved by using differential GPS measurement.
SUBJECT: A young man was equipped with a GPS receptor while walking running and cycling at various velocity on an athletic track. The speed of displacement assessed by GPS, was compared to that directly measured by chronometry (76 tests).
RESULTS: In walking and running conditions (from 2-20 km/h) as well as cycling conditions (from 20-40 km/h), there was a significant relationship between the speed assessed by GPS and that actually measured (r = 0.99, P < 0.0001) with little bias in the prediction of velocity. The overall error of prediction (s.d. of difference) averaged +/-0.8 km/h.
CONCLUSION: The GPS technique appears very promising for speed assessment although the relative accuracy at walking speed is still insufficient for research purposes. It may be improved by using differential GPS measurement.
Keywords
Exercise, Humans, Male, Regression Analysis, Running, Satellite Communications, Walking
Pubmed
Web of science
Open Access
Yes
Create date
21/01/2008 14:09
Last modification date
20/08/2019 14:29
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