N
Niels Brage
Researcher at University of Southern Denmark
Publications - 9
Citations - 2172
Niels Brage is an academic researcher from University of Southern Denmark. The author has contributed to research in topics: Consistency (statistics) & Calibration (statistics). The author has an hindex of 7, co-authored 9 publications receiving 2082 citations.
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Journal ArticleDOI
Reliability and validity of the combined heart rate and movement sensor actiheart
TL;DR: The Actiheart is technically reliable and valid but further studies are needed to assess validity in other activities and during free-living.
ORIGINAL COMMUNICATION Reliability and validity of the combined heart rate and movement sensor Actiheart
TL;DR: The Actiheart as discussed by the authors is a combined heart rate (HR) and movement sensor, which is designed to assess physical activity in populations and has been shown to be reliable and valid for walking and running.
Journal ArticleDOI
Branched equation modeling of simultaneous accelerometry and heart rate monitoring improves estimate of directly measured physical activity energy expenditure
Soren Brage,Niels Brage,Paul W. Franks,Ulf Ekelund,Man Yu Wong,Lars Bo Andersen,Karsten Froberg,Nicholas J. Wareham +7 more
TL;DR: Combining HR and CSA by branched modeling improves estimates of PAEE, and IC may be less crucial with this modeling technique.
Journal ArticleDOI
Hierarchy of individual calibration levels for heart rate and accelerometry to measure physical activity
Soren Brage,Ulf Ekelund,Niels Brage,M A Hennings,Karsten Froberg,Paul W. Franks,Nicholas J. Wareham +6 more
TL;DR: A substantial proportion of the between-individual variance in relationships between PAI, accelerometry, and HR is captured with simple calibration procedures, feasible for use in epidemiological studies.
Journal ArticleDOI
Effect of combined movement and heart rate monitor placement on physical activity estimates during treadmill locomotion and free-living.
Soren Brage,Niels Brage,Ulf Ekelund,Jian'an Luan,Paul W. Franks,Karsten Froberg,Nicholas J. Wareham +6 more
TL;DR: Quality of HR data was generally higher when monitors were placed in the lower position, and positioning the Actiheart at the level below the sternum may yield cleaner HR data, which is encouraging for studies where research participants may have to position the monitors themselves.