Physical Activity Epidemiology Lab


The mission of the Physical Activity and Epidemiology Laboratory at Queen’s University is to improve the health of Canadians through research, increasing public awareness, and advocacy around issues related to physical activity and obesity.

The mission is achieved through:

  • Conducting empirical research on the effects of physical activity, sedentary behaviour, and obesity on morbidity and mortality
  • Surveillance of population trends in physical activity, sedentary behaviour, obesity, and other chronic disease risk factors
  • Quantifying the impact of physical activity, sedentary behaviour, and obesity on population health and the health care system
  • Studying the upstream determinants of physical activity and sedentary behaviour
  • Synthesizing, evaluating and disseminating the existing evidence of the health consequences of physical inactivity, excessive sedentary behaviour, and obesity in the form of scientific reviews and commissioned documents to inform both public health practice and policies aimed at improving the health of the population
  • Training highly qualified graduate students and postdoctoral fellows in the area of physical activity and obesity epidemiology to expand the research capacity in this area in Canada

Recent Graduate Student Publications (student names are underlined)

Mecredy G, Pickett W, Janssen I.  Street connectivity and its association with physical activity in Canadian youthInternational Journal of Environmental Research and Public Health.  2011;8:3333-3350

Carson V, Iannotti RJ, Pickett W, Janssen I.  Urban and rural differences in sedentary behavior among American and Canadian youthHealth & Place.  2011;17:920-928. 

Warsh J, Janssen I, Pickett W.  Do overweight and obese youth take longer to recovery from injury?  International Journal of Injury Control and Safety Promotion.  2011;18:143–149.

McPherson M, Janssen I, Grundy A, Tranmer J, Richardson H, Aronson KJ.  Physical activity, sedentary behavior and melatonin among rotating shift nursesJournal of Occupational & Environmental Medicine.  2011;53(7):716-721. 

Carson V, Janssen I.  Volume, patterns, and types of sedentary behavior and cardio-metabolic health in children and adolescentsBMC Public Health.  2011;11:274. 

Bouchard DR, Héroux M, Janssen I.  Association between muscle mass, leg strength, and fat mass with physical function in older adults: influence of age and sexJournal of Aging and Health2011;23(2):313–328.  

Bouchard DR, Ross R, Janssen I.  Coffee, tea, and their additives: association with BMI and waist circumferenceObesity Facts.  2010;3:345-352 

Stephen WC, Janssen I.  Influence of physical activity on age-related weight loss in the elderlyJournal of Physical Activity and Health.  2010;7:78-86.

Héroux M, Janssen I, Lam M, Lee D-C, Hebert JR, Sui M, Blair SN.  Dietary patterns and the risk of mortality: impact of cardiorespiratory fitnessInternational Journal of Epidemiology.  2010;39:197-209;

Nichol ME, Janssen I, Pickett W.  Perceptions of neighborhood safety, not recreational facilities, are associated with adolescent physical activity.  Journal of Physical Activity and Health.  2010;7:442-450.

Bouchard DR, Janssen I.  Dynapenic-obesity and physical function in older adults.  Journals of Gerontology: A Biological Sciences and Medical Sciences.  2010;65A:71-77.

LeBlanc AG, Janssen I.  Dose-response relation between physical activity and dyslipidemia in youthCanadian Journal of Cardiology.  2010;26(6):e201-e205.

Janssen I, LeBlanc AGSystematic review of the health benefits of physical activity and fitness in school-aged children and youthInternational Journal of Behavioural Nutrition and Physical Activity.  2010,7:40.

LeBlanc AG, Janssen I.  Difference between self-reported and accelerometer measured moderate-to-vigorous physical activity in youth.  Pediatric Exercise Sciences.  2010; 22:523-534.

Warsh J, Pickett W, Janssen I.  Are overweight and obese youth at increased risk for physical activity injuries?  Obesity Facts.  2010;3:225-230. 

Seliske LM, Pickett W, Boyce WF, Janssen I.  Association between the food retail environment surrounding schools and overweight in Canadian youth.  Public Health Nutrition.  2009;12:1384–1391.

Stephen WC, Janssen I.  Sarcopenic-obesity and cardiovascular disease risk in the elderlyJournal of Nutrition, Health and Aging.  2009;13:460-446.

Seliske LM, Pickett W, Boyce WF, Janssen I.  Density and type of food retailers surrounding Canadian schools: variations across socioeconomic status.  Health & Place.  2009;15:903-907.

Nichol MW, Pickett W, Janssen I.  Associations between school recreational environments and physical activityJournal of School Health.  2009;79:247-254.

Mark AE, Janssen I.  Does physical activity accrued in bouts predict overweight and obesity beyond the total volume of physical activity in youth?  American Journal of Preventive Medicine.  2009;36:416-421.