Artikel
Large-scale assessment of physical activity in a population using high-resolution accelerometers worn on the hip: the German National Cohort (NAKO)
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Autoren
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Hansjörg Baurecht
- Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
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Andrea Weber
- Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
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Michael J. Stein
- Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
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Vincent van Hees
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Karen Steindorf
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Florian Herbolsheimer
- Deutsches Krebsforschungszentrum (DKFZ) und Nationales Centrum für Tumorerkrankungen (NCT) Heidelberg, Heidelberg, Germany
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Lilian Krist
- Charité – Universitätsmedizin Berlin, Berlin, Germany
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Sylvia Gastell
- Deutsches Institut für Ernährungsforschung, Nuthetal, Germany
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Michael F. Leitzmann
- Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
| Veröffentlicht: | 6. September 2024 |
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Gliederung
Text
Large population-based cohort studies utilizing device-based measures of physical activity are pivotal in bridging the gaps concerning the potential protective effects of physical activity on chronic diseases. This study details the quality control procedures and the derivation of physical activity metrics from 100 Hz accelerometer data gathered in the German National Cohort (NAKO). A subsample of NAKO participants wore during the 2014 to 2019 baseline assessment a triaxial ActiGraph accelerometer on their right hip for seven consecutive days. To ensure high data quality and integrity, a comprehensive process including autocalibration, calculations of signal features such as Euclidean Norm Minus One (ENMO) and Mean Amplitude Deviation (MAD), identification of non-wear time, and imputation using the R package GGIR version 2.10-3 was performed. A total of 73,334 participants contributed data for accelerometry analysis, of whom 63,236 provided valid data. The mean ENMO was 11.7 ± 3.7 mg (milli gravitational acceleration) and the average MAD was 19.9 ± 6.1 mg. Notably, these acceleration summary metrics were higher in men than women and decline with increasing age. The work carried out in the present study will facilitate harmonized analysis, reproducibility, and use of the NAKO accelerometry data. The NAKO accelerometry dataset represents a valuable resource for physical activity research and will be made accessible through a specified application process.
The authors declare that they have no competing interests.
The authors declare that a positive ethics committee vote has been obtained.
