Messung der körperlichen Fitness in der NAKO Gesundheitsstudie – Methoden, Qualitätssicherung und erste deskriptive Ergebnisse
Creators: name: Kluttig, Alexander
name: Zschocke, Johannes
name: Haerting, Johannes
name: Schmermund, Axel
name: Gastell, Sylvia
name: Steindorf, Karen
name: Herbolsheimer, Florian
name: Hillreiner, Andrea
name: Jochem, Carmen
name: Baumeister, Sebastian
name: Sprengeler, Ole
name: Pischon, Tobias
name: Jaeschke, Lina
name: Michels, Karin B.
name: Krist, Lilian
name: Greiser, Halina
name: Schmidt, Gerhard
name: Lieb, Wolfgang
name: Waniek, Sabina
name: Becher, Heiko
name: Jagodzinski, Annika
name: Schipf, Sabine
name: Völzke, Henry
name: Ahrens, Wolfgang
name: Günther, Kathrin
name: Castell, Stefanie
name: Kemmling, Yvonne
name: Legath, Nicole
name: Berger, Klaus
name: Keil, Thomas
name: Fricke, Julia
name: Schulze, Matthias B.
name: Loeffler, Markus
name: Wirkner, Kerstin
name: Kuß, Oliver
name: Schikowski, Tamara
name: Kalinowski, Sonja
name: Stang, Andreas
name: Kaaks, Rudolf
name: Damms-Machado, Antje
name: Hoffmeister, Michael
name: Weber, Barbara
name: Franzke, Claus-Werner
name: Thierry, Sigrid
name: Peters, Anette
name: Kartschmit, Nadja
name: Mikolajczyk, Rafael
name: Fischer, Beate
name: Leitzmann, Michael
name: Brandes, Mirko
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: Physical fitness; Muscle strength; Grip strength; Cardiorespiratory fitness; German National Cohort
subject: 610 Medizin

description: Physical fitness is defined as an individual's ability to be physically active. The main components are cardiorespiratory fitness (CRF), muscle strength, and flexibility. Regardless of physical activity level, physical fitness is an important determinant of morbidity and mortality. The aim of the current study was to describe the physical fitness assessment methodology in the German National Cohort (NAKO) and to present initial descriptive results in a subsample of the cohort. In the NAKO, hand grip strength (GS) and CRF as physical fitness components were assessed at baseline using a hand dynamometer and a submaximal bicycle ergometer test, respectively. Maximum oxygen uptake (VO2max) was estimated as a result of the bicycle ergometer test. The results of a total of 99,068 GS measurements and 3094 CRF measurements are based on a data set at halftime of the NAKO baseline survey (age 20-73 years, 47% men). Males showed higher values of physical fitness compared to women (males: GSx202f;= 47.8x202f;kg, VO2max&amp; x202f;= 36.4x202f;ml center dot min(-1)&amp; x202f;center dot kg(-1); females: GSx202f;= 29.9x202f;kg, VO(2max)x202f;= 32.3x202f;mlx202f;center dot min(-1)&amp; x202f;center dot kg(-1)). GS declined from the age of 50 onwards, whereas VO2max levels decreased continuously between the age groups of 20-29 and &gt;= 60 years. GS and VO2max showed a linear positive association after adjustment for body weight (males beta&amp; x202f;= 0.21; females beta&amp; x202f;= 0.35). These results indicate that the physical fitness measured in the NAKO are comparable to other population-based studies. Future analyses in this study will focus on examining the independent relations of GS and CRF with risk of morbidity and mortality.