Blar i Brage NIH på forfatter "Horsch, Alexander"
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Criterion validity of two physical activity and one sedentary time questionnaire against accelerometry in a large cohort of adults and older adults
Sagelv, Edvard Hamnvik; Hopstock, Laila Arnesdatter; Johansson, Jonas; Hansen, Bjørge Herman; Søren, Brage; Horsch, Alexander; Ekelund, Ulf; Morseth, Bente (Peer reviewed; Journal article, 2020)Objectives: We compared the ability of physical activity and sitting time questionnaires (PAQ) for ranking individuals versus continuous volume calculations (physical activity level (PAL), metabolic equivalents of task ... -
Physical activity levels in adults and elderly from triaxial and uniaxial accelerometry: The Tromsø Study
Sagelv, Edvard Hamnvik; Ekelund, Ulf; Pedersen, Sigurd; Brage, Søren; Hansen, Bjørge Herman; Johansson, Jonas; Grimsgaard, Sameline; Nordström, Anna; Horsch, Alexander; Hopstock, Laila Arnesdatter; Morseth, Bente (Peer reviewed; Journal article, 2019)Introduction: Surveillance of physical activity at the population level increases the knowledge on levels and trends of physical activity, which may support public health initiatives to promote physical activity. Physical ... -
Prevalence of accelerometer-measured physical activity in adolescents in Fit Futures – part of the Tromsø Study
Beldo, Sigurd; Morseth, Bente; Christoffersen, Tore; Halvorsen, Peder Andreas; Hansen, Bjørge Herman; Furberg, Anne-Sofie; Ekelund, Ulf; Horsch, Alexander (Peer reviewed; Journal article, 2020)Background: Previous studies show large variations in physical activity (PA) levels among adolescents. However, the number of studies is limited and even fewer studies have assessed PA in adolescents by accelerometer ... -
Separating movement and gravity components in an acceleration signal and implications for the assessment of human daily physical activity
van Hees, Vincent T.; Gorzelniak, Lukas; Leon, Emmanuel Carlos Dean; Eder, Martin; Pias, Marcelo; Taherian, Salman; Ekelund, Ulf; Renström, Frida; Franks, Paul W.; Horsch, Alexander; Brage, Søren (Journal article; Peer reviewed, 2013-04-23)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 ...