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Fletta eftir höfundi "Gudmundsdottir, Sigridur Lara"

Fletta eftir höfundi "Gudmundsdottir, Sigridur Lara"

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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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    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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    Serum 25-hydroxyvitamin D concentrations in 16-year-old Icelandic adolescent and its association with bone mineral density 
    Gudmundsdottir, Sigridur Lara; Hrafnkelsson, Hrafn; Sigurdsson, Engilbert; Johannsson, Erlingur (Cambridge University Press (CUP), 2020-03-19)
    Objective: The aim of the study was to assess the potential association between serum 25-hydroxyvitamin D (25(OH)D) and whole-body bone mineral density (BMD) among 16-year-old adolescents and to study the prevalence of 25(OH)D insufficiency, defined ...
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    Training Schedule and Sleep in Adolescent Swimmers 
    Gudmundsdottir, Sigridur Lara (Human Kinetics, 2020-02-01)
    Insufficient sleep duration may affect athletic performance and health. Inconsistent sleep pattern also has negative health effects, but studies on athletes’ intraindividual sleep variability are scarce. The aim of this research was to compare total ...