Lydia Kwak

Summary

Affiliation: Karolinska Institutet
Country: Sweden

Publications

  1. ncbi Associations between physical activity, fitness, and academic achievement
    Lydia Kwak
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
    J Pediatr 155:914-918.e1. 2009
  2. ncbi The repeatability and validity of questionnaires assessing occupational physical activity--a systematic review
    Lydia Kwak
    Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
    Scand J Work Environ Health 37:6-29. 2011
  3. ncbi Changes in skinfold thickness and waist circumference after 12 and 24 months resulting from the NHF-NRG In Balance-project
    Lydia Kwak
    Unit for Preventive Nutrition, Department of Biosciences, Karolinska Institutet, Huddinge, Sweden
    Int J Behav Nutr Phys Act 7:26. 2010
  4. ncbi Behavioral and cognitive effects of a worksite-based weight gain prevention program: the NHF-NRG in balance-project
    Lydia Kwak
    Department of Human Biology, Maastricht University, Maastricht, The Netherlands
    J Occup Environ Med 51:1437-46. 2009
  5. ncbi Excessive sedentary time and low cardiorespiratory fitness in European adolescents: the HELENA study
    David Martinez-Gomez
    Department of Biosciences and Nutrition at Novum, Unit for Preventive Nutrition, Karolinska Institutet, Huddinge, Sweden
    Arch Dis Child 96:240-6. 2011
  6. ncbi Recommended levels and intensities of physical activity to avoid low-cardiorespiratory fitness in European adolescents: The HELENA study
    David Martinez-Gomez
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Am J Hum Biol 22:750-6. 2010
  7. ncbi Sleep duration and activity levels in Estonian and Swedish children and adolescents
    Francisco B Ortega
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Eur J Appl Physiol 111:2615-23. 2011
  8. ncbi Can the IPAQ-long be used to assess occupational physical activity?
    Lydia Kwak
    Dept of Biosciences, Karolinska Institute, Huddinge, Stockholm, Sweden
    J Phys Act Health 9:1130-7. 2012
  9. ncbi A checklist for evaluating the methodological quality of validation studies on self-report instruments for physical activity and sedentary behavior
    Maria Hagstromer
    Dept of Neurobiology, Care Sciences, and Society, Karolinska Institute, Huddinge, Sweden
    J Phys Act Health 9:S29-36. 2012
  10. ncbi Attenuation of the effect of the FTO rs9939609 polymorphism on total and central body fat by physical activity in adolescents: the HELENA study
    Jonatan R Ruiz
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Arch Pediatr Adolesc Med 164:328-33. 2010

Detail Information

Publications10

  1. ncbi Associations between physical activity, fitness, and academic achievement
    Lydia Kwak
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
    J Pediatr 155:914-918.e1. 2009
    ..To explore the associations between objectively assessed intensity levels of physical activity and academic achievement and test whether cardiovascular fitness mediates the association between physical activity and academic achievement...
  2. ncbi The repeatability and validity of questionnaires assessing occupational physical activity--a systematic review
    Lydia Kwak
    Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
    Scand J Work Environ Health 37:6-29. 2011
    ..This study aims to review systematically the repeatability and validity of questionnaires used to assess occupational physical activity among healthy adults...
  3. ncbi Changes in skinfold thickness and waist circumference after 12 and 24 months resulting from the NHF-NRG In Balance-project
    Lydia Kwak
    Unit for Preventive Nutrition, Department of Biosciences, Karolinska Institutet, Huddinge, Sweden
    Int J Behav Nutr Phys Act 7:26. 2010
    ..abstract:..
  4. ncbi Behavioral and cognitive effects of a worksite-based weight gain prevention program: the NHF-NRG in balance-project
    Lydia Kwak
    Department of Human Biology, Maastricht University, Maastricht, The Netherlands
    J Occup Environ Med 51:1437-46. 2009
    ....
  5. ncbi Excessive sedentary time and low cardiorespiratory fitness in European adolescents: the HELENA study
    David Martinez-Gomez
    Department of Biosciences and Nutrition at Novum, Unit for Preventive Nutrition, Karolinska Institutet, Huddinge, Sweden
    Arch Dis Child 96:240-6. 2011
    ..The aims of this study were to examine what amount of sedentary time is associated with low cardiorespiratory fitness (CRF) in adolescents and whether this association is independent of physical activity...
  6. ncbi Recommended levels and intensities of physical activity to avoid low-cardiorespiratory fitness in European adolescents: The HELENA study
    David Martinez-Gomez
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Am J Hum Biol 22:750-6. 2010
    ..The purpose of this study was to determine the sex-specific physical activity (PA) intensity thresholds that best discriminate between unhealthy/healthy cardiorespiratory fitness (CRF)...
  7. ncbi Sleep duration and activity levels in Estonian and Swedish children and adolescents
    Francisco B Ortega
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Eur J Appl Physiol 111:2615-23. 2011
    ..Consequently, the common assumption that physical activity is a mediator in the relationship between short sleep durations and obesity is not supported by our findings...
  8. ncbi Can the IPAQ-long be used to assess occupational physical activity?
    Lydia Kwak
    Dept of Biosciences, Karolinska Institute, Huddinge, Stockholm, Sweden
    J Phys Act Health 9:1130-7. 2012
    ..Aims were to compare OPA as assessed with the International Physical Activity Questionnaire long version (IPAQ-L) with OPA assessed with an accelerometer and to assess the contribution of OPA to total PA...
  9. ncbi A checklist for evaluating the methodological quality of validation studies on self-report instruments for physical activity and sedentary behavior
    Maria Hagstromer
    Dept of Neurobiology, Care Sciences, and Society, Karolinska Institute, Huddinge, Sweden
    J Phys Act Health 9:S29-36. 2012
    ..The quality of methodological papers assessing physical activity instruments depends upon the rigor of a study's design...
  10. ncbi Attenuation of the effect of the FTO rs9939609 polymorphism on total and central body fat by physical activity in adolescents: the HELENA study
    Jonatan R Ruiz
    Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institutet, Huddinge, Sweden
    Arch Pediatr Adolesc Med 164:328-33. 2010
    ..To examine whether physical activity attenuates the effect of the FTO rs9939609 polymorphism on body fat estimates in adolescents...