Kristian Lundberg1,2, Anne Suhr Thykjaer1,2, Rasmus Søgaard Hansen1,2, Anders Højslet Vestergaard1,2, Nina Jacobsen3, Ernst Goldschmidt4, Rodrigo Antunes Lima5,6, Tunde Peto2,7, Niels Wedderkopp5,8, Jakob Grauslund1,2. 1. Department of Ophthalmology, Odense University Hospital, Odense, Denmark. 2. Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark. 3. Department of Ophthalmology, Rigshospitalet-Glostrup University Hospital, Copenhagen, Denmark. 4. Danish Institute for Myopia Research, Vedbaek, Denmark. 5. Centre of Research in Childhood Health, Research Unit for Exercise Epidemiology, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark. 6. CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil. 7. Centre for Public Health, Queen's University Belfast, Belfast, United Kingdom. 8. Sport Medicine Clinic, The Orthopedic Department, Hospital of Middelfart, Institute of Regional Health Services Research, University of Southern Denmark, Middelfart, Denmark.
Abstract
PURPOSE: To determine associations between physical activity (PA) and myopia in Danish school children and investigate the prevalence of myopia. METHODS: This is a prospective study with longitudinal data on PA in a Danish child cohort. Physical activity (PA) was measured objectively by repeated ActiGraph accelerometer measurement four times with different intervals (1-2.5 years) at the mean ages 9.7, 11.0, 12.9 and 15.4 years. Mean intensity of PA was estimated as counts/minutes, and time spent in sedentary, light, moderate and vigorous PA was summed using defined cut-off points. The ophthalmologic examination was conducted at the mean age of 15.4 ± 0.7 years and included cycloplegic autorefraction and biometry. RESULTS: A total of 307 children participated in the Childhood Health, Activity, and Motor Performance School (CHAMPS) Eye Study. The cycloplegic spherical equivalent (SE) was 0.30 ± 1.46 dioptres. The prevalence of myopia was 17.9% (SE ≤-0.5 dioptres). Mean axial length (AL) was 23.5 ± 0.9 mm. For all participants, the overall mean daily distribution of PA was 67.2% in sedentary, 25.6% in light, 4.4% in moderate and 2.9% in vigorous PA. Age- and sex-adjusted linear regression showed no association between PA and SE or AL. In a prospective slope analysis, there was no association between accumulated PA during the 7 years and AL or SE. CONCLUSION: The prevalence of myopia among Danish children was 17.9%. By logistic regression and slope analysis, we found no association between PA and myopia, in this first of its kind study based on objective and repeated PA data.
PURPOSE: To determine associations between physical activity (PA) and myopia in Danish school children and investigate the prevalence of myopia. METHODS: This is a prospective study with longitudinal data on PA in a Danish child cohort. Physical activity (PA) was measured objectively by repeated ActiGraph accelerometer measurement four times with different intervals (1-2.5 years) at the mean ages 9.7, 11.0, 12.9 and 15.4 years. Mean intensity of PA was estimated as counts/minutes, and time spent in sedentary, light, moderate and vigorous PA was summed using defined cut-off points. The ophthalmologic examination was conducted at the mean age of 15.4 ± 0.7 years and included cycloplegic autorefraction and biometry. RESULTS: A total of 307 children participated in the Childhood Health, Activity, and Motor Performance School (CHAMPS) Eye Study. The cycloplegic spherical equivalent (SE) was 0.30 ± 1.46 dioptres. The prevalence of myopia was 17.9% (SE ≤-0.5 dioptres). Mean axial length (AL) was 23.5 ± 0.9 mm. For all participants, the overall mean daily distribution of PA was 67.2% in sedentary, 25.6% in light, 4.4% in moderate and 2.9% in vigorous PA. Age- and sex-adjusted linear regression showed no association between PA and SE or AL. In a prospective slope analysis, there was no association between accumulated PA during the 7 years and AL or SE. CONCLUSION: The prevalence of myopia among Danish children was 17.9%. By logistic regression and slope analysis, we found no association between PA and myopia, in this first of its kind study based on objective and repeated PA data.
Authors: János Németh; Tennó Daiki; Gergely Dankovics; István Barna; Hans Limburg; Zoltán Zsolt Nagy Journal: Int J Ophthalmol Date: 2022-07-18 Impact factor: 1.645
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Authors: Godwin Ovenseri-Ogbomo; Uchechukwu L Osuagwu; Bernadine N Ekpenyong; Kingsley Agho; Edgar Ekure; Antor O Ndep; Stephen Ocansey; Khathutshelo Percy Mashige; Kovin Shunmugan Naidoo; Kelechi C Ogbuehi Journal: PLoS One Date: 2022-02-03 Impact factor: 3.240