Comparison of two Actigraph models for assessing free-living physical activity in Indian adolescents
Deutscher übersetzter Titel: | Vergleich zweier Aktigraph-Modelle zur Einschätzung der freien körperlichen Aktivität jugendlicher Indianer |
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Autor: | Corder, Kirsten; Ekelund, Ulf; Ramachandran, Ambady; Snehalatha, Chamukuttan; Wareham, Nicholas |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 25 (2007), 14, S. 1607-1611, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640410701283841 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201312008791 |
Quelle: | BISp |
Abstract des Autors
This aim of this study was to compare the new Actigraph (GT1M) with the widely used Model 7164. Seven days of free-living physical activity were measured simultaneously using both the Model 7164 and GT1M in 30 Indian adolescents (mean age 15.8 years, s = 0.6). The GT1M was on average 9% lower per epoch than model 7164, thus a correction factor of 0.91 is suggested for comparison between the two monitors. The differences between monitors increased in magnitude with intensity of activity (P < 0.001) but remained randomly distributed (r = 0.01, P = 0.96). No significant difference was observed between monitors for time spent in moderate (P = 0.31) and vigorous (P = 0.34) physical activity when using the same epoch length. The Model 7164 classified less time as sedentary (P < 0.001) and more time as light-intensity activity (P < 0.001) than the GT1M. In conclusion, data from the GT1M can be compared with historical data using average counts per minute with a correction factor, and the two models might be comparable for assessing time spent in moderate to vigorous physical activity in children when using the same epoch length. Verf.-Referat