A new accelerometric method to assess the daily walking practice.

Détails

ID Serval
serval:BIB_9E994428C836
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
A new accelerometric method to assess the daily walking practice.
Périodique
International Journal of Obesity and Related Metabolic Disorders
Auteur(s)
Schutz Y., Weinsier S., Terrier P., Durrer D.
ISSN
0307-0565 (Print)
ISSN-L
0307-0565
Statut éditorial
Publié
Date de publication
01/2002
Volume
26
Numéro
1
Pages
111-118
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
Publication Status: ppublish
Résumé
OBJECTIVE: To describe a method to obtain a profile of the duration and intensity (speed) of walking periods over 24 hours in women under free-living conditions.
DESIGN: A new method based on accelerometry was designed for analyzing walking activity. In order to take into account inter-individual variability of acceleration, an individual calibration process was used. Different experiments were performed to highlight the variability of acceleration vs walking speed relationship, to analyze the speed prediction accuracy of the method, and to test the assessment of walking distance and duration over 24-h.
SUBJECTS: Twenty-eight women were studied (mean+/-s.d.) age: 39.3+/-8.9 y; body mass: 79.7+/-11.1 kg; body height: 162.9+/-5.4 cm; and body mass index (BMI) 30.0+/-3.8 kg/m(2).
RESULTS: Accelerometer output was significantly correlated with speed during treadmill walking (r=0.95, P<0.01), and short unconstrained walks (r=0.86, P<0.01), although with a large inter-individual variation of the regression parameters. By using individual calibration, it was possible to predict walking speed on a standard urban circuit (predicted vs measured r=0.93, P<0.01, s.e.e.=0.51 km/h). In the free-living experiment, women spent on average 79.9+/-36.0 (range: 31.7-168.2) min/day in displacement activities, from which discontinuous short walking activities represented about 2/3 and continuous ones 1/3. Total walking distance averaged 2.1+/-1.2 (range: 0.4-4.7) km/day. It was performed at an average speed of 5.0+/-0.5 (range: 4.1-6.0) km/h.
CONCLUSION: An accelerometer measuring the anteroposterior acceleration of the body can estimate walking speed together with the pattern, intensity and duration of daily walking activity.
Mots-clé
Acceleration, Adult, Circadian Rhythm, Energy Metabolism, Female, Humans, Male, Middle Aged, Models, Statistical, Obesity/prevention & control, Reproducibility of Results, Walking/physiology, Walking/statistics & numerical data, Women's Health
Pubmed
Web of science
Open Access
Oui
Création de la notice
21/01/2008 13:08
Dernière modification de la notice
20/08/2019 15:04
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