Comparative interinstrument reliability of uniaxial and triaxial accelerometers in free-living conditions.
Percept Mot Skills
; 114(2): 584-94, 2012 Apr.
Article
em En
| MEDLINE
| ID: mdl-22755462
ABSTRACT
The aim of this study was to measure the inter-instrument reliability of the ActiGraph and RT3 accelerometers in free-living conditions. 15 healthy adults wore eight ActiGraph accelerometers and five RT3 accelerometers fastened to their back with an elastic belt and adjustable buckle in free-living conditions. For both accelerometers, the inter-instrument coefficient of variation (CV) decreased with increasing physical activity intensity. The inter-instrument CV of the ActiGraph (3% to 10.5%) was significantly lower than that of the RT3 (12.6% to 35.5%; p < 0.05). This finding demonstrates that the ActiGraph has higher inter-instrument reliability than the RT3. For both accelerometers, the inter-instrument reliability was higher for moderate and vigorous physical activity, the two intensities recommended for public health purposes. Studies using these devices can be compared with a low risk of misclassification of participants who meet the recommendation to perform moderate to vigorous physical activity.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Monitorização Ambulatorial
/
Equipamentos e Provisões
/
Atividade Motora
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Percept Mot Skills
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
França