Search Results

You are looking at 1 - 2 of 2 items for :

  • Author: Mark A. Pereira x
  • Journal of Physical Activity and Health x
  • Psychology and Behavior in Sport/Exercise x
  • Refine by Access: All Content x
Clear All Modify Search
Restricted access

Effects of Active Video Games on Energy Expenditure in Adults: A Systematic Literature Review

Nirjhar Dutta and Mark A. Pereira


The objective of this study was to estimate the mean difference in energy expenditure (EE) in healthy adults between playing active video games (AVGs) compared with traditional video games (TVGs) or rest.


A systematic search was conducted on Ovid MEDLINE, Web of Knowledge, and Academic Search Premier between 1998 and April 2012 for relevant keywords, yielding 15 studies. EE and heart rate (HR) data were extracted, and random effects meta-analysis was performed.


EE during AVG play was 1.81 (95% CI, 1.29–2.34; I 2 = 94.2%) kcal/kg/hr higher, or about 108 kcal higher per hour for a 60-kg person, compared with TVG play. Mean HR was 21 (95% CI, 13.7–28.3; I 2 = 93.4%) beats higher per minute during AVG play compared with TVG play. There was wide variation in the EE and HR estimates across studies because different games were evaluated. Overall metabolic equivalent associated with AVG play was 2.62 (95% CI, 2.25–3.00; I 2 = 99.2%), equivalent to a light activity level. Most studies had low risk of bias due to proper study design and use of indirect calorimetry to measure EE.


AVGs may be used to replace sedentary screen time (eg, television watching or TVG play) with light activity in healthy adults.

Restricted access

Parks and Health: Differences in Constraints and Negotiation Strategies for Park-Based Leisure Time Physical Activity by Stage of Change

Sonja A. Wilhelm Stanis, Ingrid E. Schneider, and Mark A. Pereira


Public parks are increasingly recognized as important places that facilitate physical activity. Despite the presence of parks, constraints to recreation and physical activity at parks exist. As the health benefits identified with physical activity require long-term and regular activity, it is important to examine factors pertaining to physical activity participation beyond initiation. This study explored differences in reported constraints to park based physical activity and negotiation strategies by physical activity stage of change.


Data were collected among visitors to one Minnesota state park via onsite and follow-up questionnaires.


The average visitor had a healthier weight than the average U.S. and Minnesota adult and the majority of visitors were meeting the physical activity recommendations (86.4%). Respondents in the inactive/insufficient stages were more constrained and used fewer negotiation strategies than respondents in the maintenance stage.


Results both support and expand on previous research findings. Specifically, this study supports research which indicates the adoption and maintenance of physical activity are influenced by different individual, social and environmental factors, and expands the research base by examining constraints and negotiation at different physical activity stages in a park setting. Implications of these findings provide directions for future stage-based intervention efforts.