Lydia Kwak

Summary

Affiliation: Karolinska Institutet
Country: Sweden

Publications

  1. ncbi request reprint 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
  2. doi request reprint 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
  3. pmc 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. doi request reprint 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. doi request reprint 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. doi request reprint 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. doi request reprint 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 request reprint 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 request reprint 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. doi request reprint 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

Publications11

  1. ncbi request reprint 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...
  2. doi request reprint 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...
  3. pmc 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. doi request reprint 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. doi request reprint 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. doi request reprint 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. doi request reprint 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 request reprint 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 request reprint 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. doi request reprint 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...
  11. doi request reprint Promoting physical activity and healthy dietary behavior: the role of the occupational health services: a scoping review
    Lydia Kwak
    From the Unit of Intervention and Implementation Research Drs Kwak, Jensen, Karlsson, and Alipour, Institute for Environmental Medicine, Karolinska Institutet, Stockholm, Sweden Division of Physiotherapy Dr Hagströmer, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden and Division of Social Medicine Dr Elinder, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
    J Occup Environ Med 56:35-46. 2014
    ..Conduct a scoping review to identify and map the literature that has evaluated the effects of health promotion interventions aimed at physical activity and/or dietary behavior, implemented by the occupational health services...