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Fletta eftir höfundi "Rögnvaldsdóttir, Vaka"

Fletta eftir höfundi "Rögnvaldsdóttir, Vaka"

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    Henta lágkolvetnamataræði og föstur í þjálfun? 
    Guðmundsdóttir, Sigríður Lára; Varðardóttir, Birna; Margeirsdóttir, Elísabet; Jakobsdóttir, Gréta; Rögnvaldsdóttir, Vaka; Ólafsdóttir, Anna Sigríður (2021)
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    Hreyfing íslenskra grunnskólanema 
    Gísladóttir, Þórdís Lilja; Vilhjálmsson, Rúnar; Rögnvaldsdóttir, Vaka (2022-02-08)
    Gildi hreyfingar fyrir líkamlega og andlega heilsu er vel þekkt. Þrátt fyrir þá vitneskju dregur úr hreyfingu frá barnsaldri til unglingsára og almennt er hreyfingu ábótavant. Því er mikilvægt að kanna hreyfingu barna og unglinga með það fyrir augum ...
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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 ...
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    Sleeping Behavior and Physical Health of Icelandic Adolescents 
    Rögnvaldsdóttir, Vaka (Háskóli Íslands, Menntavísindasvið, 2020-05)
    Background Sleep and physical activity are essential functions of human health. According to International recommendations, adolescents should sleep 8-10 hours each night and engage in moderate to vigorous physical activity for at least 60 minutes ...