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Medicine
Canada
2023

D-Index & Metrics

Medicine

D-Index
130
Citations
91505
World Ranking
2437
National Ranking
93

Research.com Recognitions

  • 2023 - Research.com Medicine in Canada Leader Award

Overview

Ian Janssen is affiliated with Queen's University in Canada and has contributed extensively to research in medicine and psychology. Their work primarily focuses on public health, physiology, and experimental and cognitive psychology, with specific attention to areas such as obesity, physical activity, diet, sleep disorders, and behavioral health interventions.

Their recent publications demonstrate a focus on integrating physical activity, sedentary behavior, and sleep in relation to health outcomes. Notable papers include:

  • Obesity in adults: a clinical practice guideline, 2020, Canadian Medical Association Journal
  • Canadian 24-Hour Movement Guidelines for Adults aged 18-64 years and Adults aged 65 years or older: an integration of physical activity, sedentary behaviour, and sleep, 2020, Applied Physiology Nutrition and Metabolism
  • Sedentary behaviour and health in adults: an overview of systematic reviews, 2020, Applied Physiology Nutrition and Metabolism
  • Combinations of physical activity, sedentary time, and sleep duration and their associations with depressive symptoms and other mental health problems in children and adolescents: a systematic review, 2020, International Journal of Behavioral Nutrition and Physical Activity
  • Sleep timing, sleep consistency, and health in adults: a systematic review, 2020, Applied Physiology Nutrition and Metabolism

Janssen collaborates frequently with several scholars in related fields, including:

  • Jean-Philippe Chaput
  • Mark S. Tremblay
  • Travis J. Saunders
  • Amanda Ross-White
  • Justin J. Lang

Publication venues that feature Janssen's work often include:

  • Applied Physiology Nutrition and Metabolism
  • International Journal of Behavioral Nutrition and Physical Activity
  • Health Promotion and Chronic Disease Prevention in Canada
  • Promotion de la santé et prévention des maladies chroniques au Canada
  • Canadian Journal of Public Health

Their research involves significant contributions to topics such as:

  • Obesity, Physical Activity, Diet
  • Physical Activity and Health
  • Sleep and related disorders
  • Behavioral Health and Interventions
  • Children's Physical and Motor Development
  • Child Development and Digital Technology
  • Impact of Technology on Adolescents

In total, Janssen has published extensively across disciplines related to medicine and psychology, with a strong interdisciplinary approach toward understanding health behaviors and outcomes in various populations.

Best Publications

  • Systematic review of the health benefits of physical activity and fitness in school-aged children and youth

    Ian Janssen;Allana G LeBlanc

  • Low relative skeletal muscle mass (sarcopenia) in older persons is associated with functional impairment and physical disability.

    Ian Janssen;Steven B. Heymsfield;Robert Ross

  • Skeletal muscle mass and distribution in 468 men and women aged 18–88 yr

    Ian Janssen;Steven B. Heymsfield;ZiMian Wang;Robert Ross

  • Waist circumference and not body mass index explains obesity-related health risk

    Ian Janssen;Peter T Katzmarzyk;Robert Ross

  • Canadian 24-Hour Movement Guidelines for Children and Youth: An Integration of Physical Activity, Sedentary Behaviour, and Sleep.

    Mark S. Tremblay;Mark S. Tremblay;Valerie Carson;Jean-Philippe Chaput;Jean-Philippe Chaput;Sarah Connor Gorber

  • Reduction in Obesity and Related Comorbid Conditions after Diet-Induced Weight Loss or Exercise-Induced Weight Loss in Men: A Randomized, Controlled Trial

    Robert Ross;Damon Dagnone;Peter J.H. Jones;Heidi Smith

  • Systematic review of the relationships between objectively measured physical activity and health indicators in school-aged children and youth.

    Veronica Joan Poitras;Casey Ellen Gray;Michael M. Borghese;Valerie Carson

  • The healthcare costs of sarcopenia in the United States

    Ian Janssen;Donald S. Shepard;Peter T. Katzmarzyk;Ronenn Roubenoff

  • Comparison of overweight and obesity prevalence in school-aged youth from 34 countries and their relationships with physical activity and dietary patterns

    I. Janssen;P. T. Katzmarzyk;W. F. Boyce;C. Vereecken

  • Estimation of skeletal muscle mass by bioelectrical impedance analysis.

    Ian Janssen;Steven B. Heymsfield;Richard N. Baumgartner;Robert Ross

  • New Canadian Physical Activity Guidelines

    Mark S. TremblayM.S. Tremblay;Darren E.R. WarburtonD.E. Warburton;Ian JanssenI. Janssen;Donald H. PatersonD.H. Paterson

  • Skeletal Muscle Cutpoints Associated with Elevated Physical Disability Risk in Older Men and Women

    Ian Janssen;Richard N. Baumgartner;Robert Ross;Irwin H. Rosenberg

  • Associations between Overweight and Obesity with Bullying Behaviors in School-Aged Children

    Ian Janssen;Wendy M. Craig;William F. Boyce;William Pickett

  • Body mass index, waist circumference, and health risk: evidence in support of current National Institutes of Health guidelines.

    Ian Janssen;Peter T. Katzmarzyk;Robert Ross

  • Physical activity of Canadian adults: accelerometer results from the 2007 to 2009 Canadian Health Measures Survey.

    Rachel C Colley;Didier Garriguet;Ian Janssen;Cora L Craig

  • Physical activity of Canadian children and youth: accelerometer results from the 2007 to 2009 Canadian Health Measures Survey.

    Rachel C Colley;Didier Garriguet;Ian Janssen;Cora L Craig

  • Sarcopenic obesity predicts instrumental activities of daily living disability in the elderly.

    Richard N. Baumgartner;Sharon J. Wayne;Debra L. Waters;Ian Janssen

  • Total-body skeletal muscle mass: development and cross-validation of anthropometric prediction models

    Robert C Lee;ZiMian Wang;Moonseong Heo;Robert Ross

  • The Economic Costs Associated With Physical Inactivity and Obesity in Canada: An Update

    Peter T. Katzmarzyk;Ian Janssen

  • Reduction in Obesity and Related Comorbid Conditions after Diet-Induced Weight Loss or Exercise-Induced Weight Loss in Men

    Robert Ross;Damon Dagnone;Peter J.H. Jones;Heidi Smith

Frequent Co-Authors

Mark S. Tremblay
Mark S. Tremblay Children's Hospital of Eastern Ontario
William Pickett
William Pickett Brock University
Robert Ross
Robert Ross Queen's University
Peter T. Katzmarzyk
Peter T. Katzmarzyk Pennington Biomedical Research Center
Jean-Philippe Chaput
Jean-Philippe Chaput University of Ottawa
Karen A. Matthews
Karen A. Matthews University of Pittsburgh
John C. Spence
John C. Spence University of Alberta
William F. Boyce
William F. Boyce Queen's University
Steven N. Blair
Steven N. Blair University of South Carolina
Wendy M. Craig
Wendy M. Craig Queen's University

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