Accepted for Publication: June 12, 2021.
Published: August 26, 2021. doi:10.1001/jamanetworkopen.2021.21675
Open Access: This is an open access article distributed under the terms of the CC-BY License. © 2021 Jarnig G et al. JAMA Network Open.
Corresponding Author: Gerald Jarnig, MSc, Institute of Human Movement Science, Sport and Health, University of Graz, Mozartgasse 14, 8010 Graz, Austria (firstname.lastname@example.org).
Author Contributions: Messrs Jarnig and Jaunig contributed equally to this work. Messrs Jarnig and Jaunig had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Concept and design: Jarnig, van Poppel.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Jarnig, Jaunig.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Jarnig, Jaunig.
Obtained funding: Jarnig.
Administrative, technical, or material support: Jarnig.
Supervision: van Poppel.
Conflict of Interest Disclosures: Mr Jarnig reported receiving grants from the Austrian Federal Ministry for Arts, Culture, Civil Service and Sport during the conduct of the study. No other disclosures were reported.
Funding/Support: This study was funded by grant GZ205.410/0014-II/B/5/2018 (Mr Jarnig) from the Austrian Federal Ministry for Arts, Culture, Civil Service and Sport. The University of Graz funded open access publishing.
Role of the Funder/Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We thank all participants and their guardians and the trainers and staff who assisted with this study. Wolfgang Modritz (Nachwuchsmodell, Austria) initiated the study; Rodrigo A. Lima, PhD (University of Graz, Austria), and Dr Peter Hofmann (University of Graz, Austria) provided support in the conception phase; Dr Robert Klinglmair (Education Directorate of Carinthia, Austria) authorized assessments in schools; Mag. Christian Günter (Austrian Federal Ministry of Sport) and Mag. Hannes Wolf (Education Directorate of Carinthia, Austria) helped continue the assessments after the COVID-19 lockdown. None of the individuals listed were financially compensated.
Additional Information: The study was organized by Nachwuchsmodell Austria. The Austrian Working Group on Pediatric Endocrinology and Diabetics provided the calculations for the Austrian reference values for height SD scores and body mass index centile curves (ie, equicurves).
A , Pecoraro
L , Ferruzzi
et al. Effects of COVID-19 lockdown on lifestyle behaviors in children with obesity living in Verona, Italy: a longitudinal study. Obesity (Silver Spring)
. 2020;28(8):1382-1385. doi:10.1002/oby.22861
I , Houdart
S , El Ouadrhiri
Y , Bigard
X , Vuillemin
A , Duché
P . How to deal with COVID-19 epidemic-related lockdown physical inactivity and sedentary increase in youth? adaptation of Anses’ benchmarks. Arch Public Health
. 2020;78:52. doi:10.1186/s13690-020-00432-z
S , Menting
MD , Daams
JG , van Poppel
MNM , Roseboom
TJ , Gemke
RJBJ . Cardiorespiratory fitness in childhood and adolescence affects future cardiovascular risk factors: a systematic review of longitudinal studies. Sports Med
. 2018;48(11):2577-2605. doi:10.1007/s40279-018-0974-5
A , Kelley
GA , Cottrell
LE , Giacobbi
Jr , Innes
KE , Lilly
CL . Childhood obesity and adult cardiovascular disease risk factors: a systematic review with meta-analysis. BMC Public Health
. 2017;17(1):683. doi:10.1186/s12889-017-4691-z
DS , Khan
LK , Dietz
WH , Srinivasan
SR , Berenson
GS . Relationship of childhood obesity to coronary heart disease risk factors in adulthood: the Bogalusa Heart Study. Pediatrics
. 2001;108(3):712-718. doi:10.1542/peds.108.3.712
E , Altman
DG , Egger
M , Pocock
SJ , Gøtzsche
PC , Vandenbroucke
JP ; STROBE Initiative. The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. PLoS Med
. 2007;4(10):e296. doi:10.1371/journal.pmed.0040296
Republic of Austria. Legal Information System of the Republic of Austria, Federal Law Gazzette [State Law Gazzette]. Published February 12, 2021. Accessed February 12, 2021. https://www.ris.bka.gv.at/Bgbl-Auth/
T , Bachmann
C , Diehlmann
K , Kemper
B. DüMo Düsseldorfer Modell der Bewegungs-, Sport- und Talentförderung: 2003-2018: Konzept, Normwerte, Untersuchungsergebnisse. LIT; 2020.
K. Deutscher Motorik-Test 6-18: (DMT 6-18): Manual und internetbasierte Auswertungssoftware. 2. Auflage. Feldhaus, Edition Czwalina; 2016.
M , Onyango
AW , Borghi
E , Siyam
A , Nishida
C , Siekmann
J . Development of a WHO growth reference for school-aged children and adolescents. Bull World Health Organ
. 2007;85(9):660-667. doi:10.2471/BLT.07.043497
DD , Daly-Smith
A , Hall
et al. COVID-19 lockdown: ethnic differences in children’s self-reported physical activity and the importance of leaving the home environment: a longitudinal and cross-sectional study from the Born in Bradford birth cohort study. Preprint. Posted online March 3, 2021. medRxiv
. doi:10.1101/2021.02.26.21252543Google Scholar
R , Salway
R , Sharp
D , Shield
JPH , Jago
R . A longitudinal study investigating change in BMI z-score in primary school-aged children and the association of child BMI z-score with parent BMI. BMC Public Health
. 2020;20(1):1902. doi:10.1186/s12889-020-10001-2
L , Abdeen
ZA , Hamid
et al; NCD Risk Factor Collaboration (NCD-RisC). Worldwide trends in body-mass index, underweight, overweight, and obesity from 1975 to 2016: a pooled analysis of 2416 population-based measurement studies in 128·9 million children, adolescents, and adults. Lancet
. 2017;390(10113):2627-2642. doi:10.1016/S0140-6736(17)32129-3