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Medicine
Canada
2023

D-Index & Metrics

Medicine

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

Ian Janssen publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Ian Janssen sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 512 publications — 60th percentile

60% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Ian Janssen D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Ian Janssen sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 130 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

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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