Participatory research to promote physical activity at congregate-meal sites

The purpose of this study was to determine the feasibility and effectiveness of an on-site physical activity (PA) program offered with congregate meals. Study 1 surveyed meal-site users on their likelihood to participate. Study 2 used meal-site-manager interviews and site visits to determine organizational feasibility. Study 3, a controlled pilot study, randomized meal sites to a 12-week group-based social-cognitive (GBSC) intervention or a standard-care control. Studies 1 and 2 indicated that most meal-site users would participate in an on-site PA program, and meal sites had well-suited physical resources and strong organizational support for this type of program. In Study 3, GBSC participants increased their weekly PA over those in the control condition (p < .05, ES = .79). Results indicated that changes in task cohesion might have mediated intervention effectiveness. These studies demonstrate that a PA program offered in this venue is feasible, is effective in promoting PA, and could have a strong public health impact.     

INTENSIFYING GLOBAL DEPENDENCY: Foreign Debt, Structural Adjustment, and Third World Underdevelopment

Dependency-oriented arguments have not focused sufficient attention on the growing international debt crisis. This omission is unfortunate because foreign debt has introduced several important dynamics into the world capitalist system. Perhaps most important, the International Monetary Fund (IMF) has emerged as one of the most powerful transnational financial institutions, as it makes loans to and evaluates credit worthiness of Third World states. To be acceptable credit risks, underdeveloped states often must implement a number of IMF "structural adjustment" or austerity measures. Our cross-national analysis-which includes an examination of important outliers-indicates that IMF-imposed conditionality is the primary impediment to economic expansion in the Third World. Growing service payments on the external debt also inhibit economic growth, but less so. Moreover, although structural adjustment does not yet significantly impact physical quality of life, foreign investment and level of international reserves do exhibit a negative effect on this indicator. Dependency arguments should be revised and broadened given the profound impact of the global debt crisis.     

SVM-like decision theoretical classification of high-dimensional vectors

In this paper, we consider the classification of high-dimensional vectors based on a small number of training samples from each class. The proposed method follows the Bayesian paradigm, and it is based on a small vector which can be viewed as the regression of the new observation on the space spanned by the training samples. The classification method provides posterior probabilities that the new vector belongs to each of the classes, hence it adapts naturally to any number of classes. Furthermore, we show a direct similarity between the proposed method and the multicategory linear support vector machine introduced in Lee et al. [2004. Multicategory support vector machines: theory and applications to the classification of microarray data and satellite radiance data. Journal of the American Statistical Association 99 (465), 67–81]. We compare the performance of the technique proposed in this paper with the SVM classifier using real-life military and microarray datasets. The study shows that the misclassification errors of both methods are very similar, and that the posterior probabilities assigned to each class are fairly accurate.     

Trends in College Binge Drinking During a Period of Increased Prevention Efforts: Findings from 4 Harvard School of Public Health College Alcohol Study Surveys: 1993–2001

Abstract

The 2001 Harvard School of Public Health College Alcohol Study surveyed students at 119 4-year colleges that participated in the 1993, 1997, and 1999 studies. Responses in the 4 survey years were compared to determine trends in heavy alcohol use, alcohol-related problems, and encounters with college and community prevention efforts. In 2001, approximately 2 in 5 (44.4%) college students reported binge drinking, a rate almost identical to rates in the previous 3 surveys. Very little change in overall binge drinking occurred at the individual college level. The percentages of abstainers and frequent binge drinkers increased, a polarization of drinking behavior first noted in 1997. A sharp rise in frequent binge drinking was noted among students attending all-women's colleges. Other significant changes included increases in immoderate drinking and harm among drinkers. More students lived in substance-free housing and encountered college educational efforts and sanctions resulting from their alcohol use.     

Impacts of Rapid Urban Growth on Farmland Conversion: Application of New Regional Land Use Policy Models and Geographical Information Systems1

Abstract Geographical Information Systems (GIS) computer mapping programs and new land use policy models are shown to be useful in understanding the dynamics of rural land conversion to urban uses. The California Central Valley Alternative Futures Model was constructed to evaluate patterns of growth that are forecasted to triple the population of the California Central Valley by 2040. The GIS sub-divided the Valley into over 750,000 land units, and a logit analysis evaluated factors leading to actual patterns of recent growth. Undeveloped land units were assigned a probability of future development, and expected population increases were allocated to those land units with the highest probability of future growth under two growth scenarios: low density and compact growth. The model shows that low density growth would convert over 1,035,000 acres of farmland to urban uses, including over 600,000 acres of prime or statewide important quality land. Compact growth would convert only 474,000 acres total, of which only 266,000 would be on prime soils. This paper shows how new land use models and GIS programs enable rural sociologists to better understand how rural communities and their spatial environment interact—in particular, how these tools enable researchers to explore the forces and consequences of rural and exurban growth.     

Active Commuting Patterns at a Large,Midwestern College Campus

Abstract

Objective: To understand patterns and influences on active commuting (AC) behavior. Participants: Students and faculty/staff at a university campus. Methods: In April–May 2008, respondents answered an online survey about mode of travel to campus and influences on commuting decisions. Hierarchical regression analyses predicted variance in walking and biking using sets of demographic, psychological, and environmental variables. Results: Of 898 respondents, 55.7% were female, 457 were students (50.4%). Students reported more AC than faculty/staff. For students, the models explained 36.2% and 29.1% of the variance in walking and biking, respectively. Among faculty/staff, the models explained 45% and 25.8% of the variance in walking and biking. For all models, the psychological set explained the greatest amount of variance. Conclusions: With current economic and ecological concerns, AC should be considered a behavior to target for campus health promotion.     

Assessment of Cardiovascular Risk in Collegiate Football Players and Nonathletes

Abstract

Collegiate American football players may be at risk for cardiovascular disease. Objective: To compare cardiovascular disease risk factors and cardiovascular structure and function parameters of football players, stratified by position, to a group of sedentary, nonathletes. Participants: Twenty-six collegiate football players and 13 nonathletes participated in this study. Methods: Blood pressures, anthropometrics, and blood chemistries were obtained and analyzed using standardized procedures. Resting echocardiography was used to evaluate cardiac morphology and function. Brachial artery flow-mediated dilation was assessed using high-resolution ultrasonography. Results: The prevalence of the metabolic syndrome was significantly higher amongst the linemen compared to the skill-position players (46% versus 0%, p < .05). Mildly abnormal wall thickness was noted in 20% of the football players. No significant differences in vascular function were observed between the groups. Conclusions: The increased prevalence of the metabolic syndrome and its components in the collegiate linemen may increase cardiovascular disease risk.     

Neuropsychological Correlates of Performance Based Functional Status in Elder Adult Protective Services Referrals for Capacity Assessments

We have previously described high rates of executive function impairment in clients referred by Adult Protective Services (APS) to geriatric psychiatry for decision-making capacity assessments. The purpose of this study was to determine the independent relationship between neuropsychological screening instruments, particularly instruments sensitive to executive function, and performance-based functional tasks in elder referrals. Our retrospective medical review (n = 75/157 referrals completed all neuropsychological and functional assessments) revealed that only the Executive Interview (EXIT25) contributed independent variance to money management performance (R² = 0.29, p < 0.001), telephone use ability (R² = 0.39, p < 0.001), and summed performance (R² = 0.45, p < 0.001). Executive instruments may specifically inform decision-making capacity assessments.     

Least Restrictive or Least Understood? Waist Restraints,Provider Practices,and Risk of Harm

Since implementation of The Omnibus Budget Reconciliation Act of 1987, restraint use in American nursing homes has reduced dramatically. The reduction in vest restraints has resulted in an increase in “least restrictive” devices such as waist restraints. Although this analysis of U.S. Food and Drug Administration Adverse Event Reporting Data Files found that waist devices pose the same potential risk for asphyxial death as vest restraints, few health professionals and consumers are aware of this outcome. Post-marketing device reporting needs better data quality and surveillance, which can certainly benefit the Centers for Medicare and Medicaid Services in their efforts to regulate and enforce standards of care that reduce deaths and injuries to vulnerable nursing home residents.