Thomas McKenzie

Learn More
OBJECTIVES This study evaluated a health-related physical education program for fourth- and fifth-grade students designed to increase physical activity during physical education classes and outside of school. METHODS Seven schools were assigned to three conditions in a quasi-experimental design. Health-related physical education was taught by physical(More)
BACKGROUND Our objective was to evaluate the effects of environmental, policy, and social marketing interventions on physical activity and fat intake of middle school students on campus. DESIGN Twenty-four middle schools were randomly assigned to intervention or control conditions. Baseline measures were collected in spring 1997, and interventions were(More)
PURPOSE School physical education (PE) is highly recommended as a means of promoting physical activity, and randomized studies of health-related PE interventions in middle schools have not been reported. We developed, implemented, and assessed an intervention to increase physical activity during middle-school PE classes. METHODS Twenty-four middle schools(More)
BACKGROUND Physical inactivity is a risk behavior for cardiovascular and other diseases. Schools can promote public health objectives by increasing physical activity among youth. METHODS The Child and Adolescent Trial for Cardiovascular Health (CATCH) was a multicenter, randomized trial to test the effectiveness of a cardiovascular health promotion(More)
OBJECTIVES Physical activity may be constrained or facilitated by local environments. The availability of neighborhood facilities for physical activity may be particularly relevant for youth, who are unable to drive and whose activity is often limited to the immediate distance they are able to walk or bicycle. Several studies have shown that proximity to(More)
The effects of a 2-year health-related school physical education program on standardized academic achievement scores was assessed in 759 children who completed Metropolitan Achievement Tests before and after the program. Schools were randomly assigned to condition: (a) Specialists taught the Sports, Play, and Active Recreation for Kids curriculum; (b)(More)
Schools have played a central role in the provision of physical activity to American children and youth for more than a century. Physical education (PE) has been an institution in American schools since the late 1800s,1 and school sports have been a growing component of the educational enterprise since the early 1900s. Traditionally, students have engaged(More)
OBJECTIVES Parks provide places for people to experience nature, engage in physical activity, and relax. We studied how residents in low-income, minority communities use public, urban neighborhood parks and how parks contribute to physical activity. METHODS In 8 public parks, we used direct observation to document the number, gender, race/ethnicity, age(More)
OBJECTIVES This study assessed the association of school environmental characteristics with student physical activity on campus. METHODS Physical activity areas (n = 137) at 24 public middle schools were assessed for area type, size, and improvements (e.g., basketball courts). Student physical activity and the presence of equipment and supervision were(More)
BACKGROUND New tools are needed to examine physical activity and the contexts in which it occurs. Community parks contribute to physical activity, but measuring activity and associated variables in them is challenging because area contexts change and the numbers and characteristics of users are highly variable. METHODS We developed SOPARC (System for(More)