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Dokumenttyp:
journal article 
Autor(en):
van Hees, Vincent T; Gorzelniak, Lukas; Dean León, Emmanuel Carlos; Eder, Martin; Pias, Marcelo; Taherian, Salman; Ekelund, Ulf; Renström, Frida; Franks, Paul W; Horsch, Alexander; Brage, Søren 
Titel:
Separating movement and gravity components in an acceleration signal and implications for the assessment of human daily physical activity. 
Abstract:
Human body acceleration is often used as an indicator of daily physical activity in epidemiological research. Raw acceleration signals contain three basic components: movement, gravity, and noise. Separation of these becomes increasingly difficult during rotational movements. We aimed to evaluate five different methods (metrics) of processing acceleration signals on their ability to remove the gravitational component of acceleration during standardised mechanical movements and the implications f...    »
 
Zeitschriftentitel:
PLoS ONE 
Jahr:
2013 
Band / Volume:
Heft / Issue:
Seitenangaben Beitrag:
e61691 
Sprache:
eng 
TUM Einrichtung:
Institut für Medizinische Statistik und Epidemiologie