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Fletta eftir höfundi "Chen, Kong Y."

Fletta eftir höfundi "Chen, Kong Y."

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    Comparison of summer and winter objectively measured physical activity and sedentary behavior in older adults: Age, gene/environment susceptibility Reykjavik study 
    Arnardóttir, Nanna Ýr; Óskarsdóttir, Nína Dóra; Brychta, Robert J.; Koster, Annemarie; van Domelen, Dane R.; Caserotti, Paolo; Eiriksdottir, Gudny; Sverrisdóttir, Jóhanna E.; Jóhannsson, Erlingur; Launer, Lenore J.; Gudnason, Vilmundur; Harris, Tamara B.; Chen, Kong Y.; Sveinsson, Thorarinn (MDPI AG, 2017-10-21)
    In Iceland, there is a large variation in daylight between summer and winter. The aim of the study was to identify how this large variation influences physical activity (PA) and sedentary behavior (SB). Free living PA was measured by a waist-worn ...
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    Dynamic sitting: Measurement and associations with metabolic health 
    van der Berg, Julianne D.; Stehouwer, Coen D.A.; Bosma, Hans; Caserotti, Paolo; Eiriksdottir, Gudny; Arnardóttir, Nanna Ýr; Van Domelen, Dane R.; Brychta, Robert J.; Chen, Kong Y.; Sveinsson, Thorarinn; Johannsson, Erlingur; Launer, Lenore J.; Gudnason, Vilmundur; Jónsson, Pálmi V.; Harris, Tamara B.; Koster, Annemarie (Informa UK Limited, 2019-03-30)
    Dynamic sitting, such as fidgeting and desk work, might be associated with health, but remains difficult toidentify out of accelerometry data. We examined, in a laboratory study, whether dynamic sitting can beidentified out of triaxial activity counts. ...
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    Less physical activity and more varied and disrupted sleep is associated with a less favorable metabolic profile in adolescents 
    Rögnvaldsdóttir, Vaka; Brychta, Robert; Hrafnkelsdóttir, Soffía M.; Chen, Kong Y.; Arngrímsson, Sigurbjörn Árni; Johannsson, Erlingur; Gudmundsdottir, Sigridur Lara (Public Library of Science (PLoS), 2020-05-15)
    Background: Sleep and physical activity are modifiable behaviors that play an important role in preventing overweight, obesity, and metabolic health problems. Studies of the association between concurrent objective measures of sleep, physical activity, ...
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    Less screen time and more frequent vigorous physical activity is associated with lower risk of reporting negative mental health symptoms among Icelandic adolescents 
    Hrafnkelsdóttir, Soffía Margrét; Brychta, Robert J.; Rögnvaldsdóttir, Vaka; Gestsdottir, Sunna; Chen, Kong Y.; Jóhannsson, Erlingur Sigurður; Guðmundsdóttir, Sigriður Lára; Arngrímsson, Sigurbjörn Árni (Public Library of Science (PLoS), 2018-04-26)
    Objective Few studies have explored the potential interrelated associations of screen time and physical activity with mental health in youth, particularly using objective methods. We examined cross-sectional associations of these variables among ...
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    Longitudinal Change in Adolescent Bedtimes Measured by Self-Report and Actigraphy 
    Brychta, Robert J.; Rögnvaldsdóttir, Vaka; Gudmundsdottir, Sigridur Lara; Stefansdottir, Runa; Hrafnkelsdóttir, Soffía Margrét; Gestsdottir, Sunna; Arngrímsson, Sigurbjörn Árni; Chen, Kong Y.; Jóhannsson, Erlingur (Human Kinetics, 2019-12-01)
    Introduction: Sleep is often quantified using self-report or actigraphy. Self-report is practical and less technically challenging, but prone to bias. We sought to determine whether these methods have comparable sensitivity to measure longitudinal ...