Equivalence of accelerometer data for walking and running : treadmill versus on land
Deutscher übersetzter Titel: | Die Äquivalenz der Beschleunigungsdaten beim Walking und Laufen : Laufband vs. auf normalem Boden |
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Autor: | Vanhelst, Jeremy; Zunquin, Gautier; Theunynck, Denis; Mikulovic, Jacques; Bui-Xuan, Gilles; Béghin, Laurent |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 27 (2009), 7, S. 669-675, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640410902741068 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201409008622 |
Quelle: | BISp |
Abstract
The aim of this study was to compare equivalence and agreement of physical activity output data collected by a Research Tri-axial accelerometer (R3T) during walking and running on a treadmill versus on land. Fifty healthy volunteers, 35 males (age 21.9 ± 1.8 years) and 15 females (age 21.6 ± 0.7 years), underwent a series of tests on a treadmill and on land with the order of testing administered randomly. Each participant walked for 10 min at 4 km · h−1 and 6 km · h−1, and ran at 8 km · h−1 and 10 km · h−1, with the same accelerometer. Analysis of output data was assessed by two statistical tests: the equivalence test and Bland and Altman method. Mean differences for walking were 41.2 ± 129.8 counts per minute and −68.8 ± 173.15 counts per minute at 4 km · h−1 and km · h−1, respectively. Mean differences for running were 19.1 ± 253.20 counts per minute and 38.9 ± 270.2 counts per minute at 8 km · h−1 and 10 km · h−1, respectively. The physical activity output data from the treadmill were higher by an average of 3.5% than the data collected on land. The differences obtained between the treadmill and on land were small and non-significant. The equivalence test showed that output data from the treadmill versus on land were equivalent (P < 0.05). The Bland and Altman method showed good agreement between the counts obtained on the treadmill and on land (P < 0.05). In conclusion, physical activity output data were similar as measured by the RT3 accelerometer on a treadmill and on land. The findings suggest that the RT3 may be used in a laboratory and extrapolated to data obtained on land. Verf.-Referat