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.
journal_name
Acta Ophthalmoljournal_title
Acta ophthalmologicaauthors
Lundberg K,Suhr Thykjaer A,Søgaard Hansen R,Vestergaard AH,Jacobsen N,Goldschmidt E,Lima RA,Peto T,Wedderkopp N,Grauslund Jdoi
10.1111/aos.13513subject
Has Abstractpub_date
2018-03-01 00:00:00pages
134-141issue
2eissn
1755-375Xissn
1755-3768journal_volume
96pub_type
杂志文章abstract:PURPOSE:To investigate the coexistence of ocular microvascular and systemic macrovascular abnormalities in early stage, newly diagnosed and previously untreated normal tension glaucoma patients (NTG). METHODS:Retinal vascular reactivity to flickering light was assessed in 19 NTG and 28 age-matched controls by means of...
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更新日期:2016-03-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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