Zusammenfassung
Background Physical activity is a complex behavior that is difficult to measure validly and reliably in large, population-based studies. Data on physical activity are available for the initial 100,000 participants of the German National Cohort. Objectives To describe the baseline physical activity assessment in the cohort and to present initial descriptive results. Material and methods Physical ...
Zusammenfassung
Background Physical activity is a complex behavior that is difficult to measure validly and reliably in large, population-based studies. Data on physical activity are available for the initial 100,000 participants of the German National Cohort. Objectives To describe the baseline physical activity assessment in the cohort and to present initial descriptive results. Material and methods Physical activity was assessed using a combination of tools, including two self-administered questionnaires, the Questionnaire on Annual Physical Activity Pattern (QUAP) and the Global Physical Activity Questionnaire (GPAQ); a computer-based 24-h physical activity recall (cpar24); and 7-day accelerometry (Actigraph GT3X/+; ActiGraph, Pensacola, FL, USA). Results The availability of data varied between assessment instruments (QUAP: nx202f;= 16,372; GPAQ: nx202f;= 90,900; cpar24: nx202f;= 23,989; accelerometry: nx202f;= 35,218). Analyses across measurement tools showed that on average, women spent 75 to 216x202f;min/d, and men spent 73 to 224x202f;min/d in moderate or higher intensity total physical activity. Persons aged 20-39 years spent 66 to 200x202f;min/d, and persons aged 40-69 years spent 78 to 244x202f;min/d in moderate or higher intensity total physical activity. Conclusions Initial baseline analyses of physical activity in this cohort show the value of using a combination of questionnaires, 24-h recalls, and a movement sensor. The comprehensive data collection represents a valuable resource for future analyses and will improve our understanding of the association between physical activity and disease prevention.
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