Medicine and Health Sciences Commons^™

Comparison Of Two Approaches To Structured Physical Activity Surveys Of Adolescents, Robert G. Mcmurray, Kimberly B. Ring, Margarita S. Treuth, Gregory J. Welk, Russell R. Pate, Kathryn H. Schmitz, Julie L. Pickrel, Vivian Gonzalez, Maria João C. A. Almeida, Deborah Rohm Young, James F. Sallis

Faculty Publications

Purpose - To compare the test-retest reliability, convergent validity, and overall feasibility/usability of activity-based (AB) and time-based (TB) approaches for obtaining self-reported moderate-to-vigorous physical activity (MVPA) from adolescents.

Methods - Adolescents (206 females and 114 males) completed two 3-d physical activity recalls using the AB and TB surveys, which contained identical lists of physical activities. The participants wore an MTI Actigraph^® accelerometer for the same period.

Results - The TB instrument took about 3 min longer to complete (P=0.022). Overall 2-d test-retest correlations for MVPA were similar for the two surveys (r=0.676 and 0.667), but the girls …

Clinical Implications Of Obesity With Specific Focus On Cardiovascular Disease: A Statement For Professionals From The American Heart Association Council On Nutrition, Physical Activity, And Metabolism, Samuel Klein, Lora E. Burke, George A. Bray, Steven N. Blair, David B. Allison, Xavier Pi-Sunyer, Yuling Hong, Robert H. Eckel

Faculty Publications

Obesity adversely affects cardiac function, increases the risk factors for coronary heart disease, and is an independent risk factor for cardiovascular disease. The risk of developing coronary heart disease is directly related to the concomitant burden of obesity-related risk factors. Modest weight loss can improve diastolic function and affect the entire cluster of coronary heart disease risk factors simultaneously. This statement from the American Heart Association Council on Nutrition, Physical Activity, and Metabolism reviews the relationship between obesity and the cardiovascular system, evaluates the effect of weight loss on coronary heart disease risk factors and coronary heart disease, and provides …

Prevention Conference Vii - Obesity, A Worldwide Epidemic Related To Heart Disease And Stroke: Executive Summary, Robert H. Eckel, David A. York, Stephan Rössner, Van Hubbard, Ian Caterson, Sachiko T. St. Jeor, Laura L. Hayman, Rebecca M. Mullis, Steven N. Blair

Faculty Publications

No abstract provided.

Lower Extremity Muscle Strength And Risk Of Self-Reported Hip Or Knee Osteoarthritis, Jennifer M. Hootman, Shannon J. Fitzgerald, Carol A. Macera, Steven N. Blair

Faculty Publications

Purpose: The purpose of this study was to investigate the gender-specific longitudinal association between quadriceps strength and self-reported, physician-diagnosed hip or knee osteoarthritis (OA).

Methods: Subjects were 3081 community-dwelling adults who were free of OA, joint symptoms and injuries, completed a maximum treadmill exercise test, had isokinetic knee extension and flexion and isotonic leg press strength measurements taken at baseline and returned at least one written follow-up survey. Multivariate logistic regression was used to estimate odds ratios and 95% confidence intervals.

Results: Women with moderate or high isokinetic quadriceps strength had a significantly reduced risk (55% to 64%) of hip …

Monitoring Physical Activity: Uses And Measurement Issues With Automated Counters, Michelle L. Granner, Patricia A. Sharpe

Faculty Publications

Background: Promotion of physical activity is a public health priority, and environmental factors influence physical activity behavior. Valid and reliable automated measurement tools of physical activity for assessment and evaluation within public settings are needed. Methods: Searches of the research literature and governmental reports from physical activity, transportation, and recreation fields were conducted to identify methods of automated counting and validation studies. The article provides a summary of (a) current methods and uses of automated counters, (b) information about validity and reliability where available, (c) strengths and limitations of each methods, and (d) measurement issues. Results: Existing automated counting technology …

Exercise And Physical Activity In The Prevention And Treatment Of Atherosclerotic Cardiovascular Disease: A Statement From The Council On Clinical Cardiology (Subcommittee On Exercise, Rehabilitation, And Prevention) And The Council On Nutrition, Physical Activity, And Metabolism (Subcommittee On Physical Activity), Paul D. Thompson, David Buchner, Ileana L. Piña, Gary J. Balady, Mark A. Williams, Bess H. Marcus, Kathy Berra, Steven N. Blair, Fernando Costa, Barry Franklin, Gerald F. Fletcher, Neil F. Gordon, Russell R. Pate, Beatriz L. Rodriguez, Antronette K. Yancey, Nanette K. Wenger

Faculty Publications

No abstract provided.

Moderate Intensity Exercise Training Improves Cardiorespiratory Fitness In Women, J. David Branch, Russell R. Pate, Sharon P. Bourque

Faculty Publications

Among women, there is an increased prevalence of sedentary lifestyle and less participation in physical activity at levels recommended by the Surgeon General. As a result, women have been identified as a target group in public health initiatives to increase physical activity. The health-related benefits of habitual, moderate intensity physical activity are well documented in the epidemiological literature, but less is known about the effect of such physical activity on cardiorespiratory fitness. Our hypothesis was that moderate and vigorous exercise training regimens of similar estimated energy expenditure would result in similar changes in cardiorespiratory fitness. Eighteen sedentary premenopausal women with …

Statement On Exercise: Benefits And Recommendations For Physical Activity Programs For All Americans - A Statement For Health Professionals By The Committee On Exercise And Cardiac Rehabilitation Of The Council On Clinical Cardiology, American Heart Association, Gerald F. Fletcher, Steven N. Blair, James Blumenthal, Carl Caspersen, Bernard Chaitman, Stephen Epstein, Harold Falls, Erika S. Sivarajan Froelicher, Victor F. Froelicher, Ileana L. Piña

Faculty Publications

No abstract provided.

Does Weight Loss Cause The Exercise-Induced Increase In Plasma High Density Lipoproteins?, Paul T. Williams, Peter D. Wood, Ronald M. Krauss, William L. Haskell, Karen M. Vranizan, Steven N. Blair, Richard Terry, John W. Farquhar

Faculty Publications

Studies showing an increase in plasma concentration of high density lipoprotein cholesterol (HDL-C) with moderate exercise have usually rejected the role of body weight change in the HDL-C raising process, ostensibly because the amount of weight lost has been negligible. To investigate HDL-C changes more thoroughly, we followed initially sedentary middle-aged men randomly assigned to either a moderate running (N=36) or a sedentary control (N=28) group for one year. Among runners, one-year changes in plasma HDL-C concentrations correlated strongly with their body weight changes (r = -0.53, P < 0.001). Curve-fitting procedures and regression analysis suggested that processes associated with weight change produce much of the plasma HDL-C changes induced by moderate exercise and that changes in HDL-C concentration predominantly reflect changes in the reputedly anti-atherogenic HDL2 sub-component. Further, the interaction between weight change and plasma HDL-C concentration was significantly different (P