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Lead (Pb) is a known toxicant that affects young children. It is believed that old water reticulation systems are prone to lead leaching from the walls of lead pipes and fixtures where water is conveyed to households. Many households in Christchurch city particularly in the Northwestern and Central parts of the city contain old water reticulation systems thereby, putting children at considerable health risks. The purpose of this dissertation is to identify the hazards of lead exposure that comes from old water reticulation system of Northwest (NW) Christchurch water supply to households, characterize the health risks due to such contamination and, finally, to suggest possible ways to minimize the hazards. This is accomplished by conducting a systematic review of literature on the exposure patterns of lead from reticulation systems and a literature review of the possible dose response patterns of health effects of lead contamination from old water reticulation systems on children. Thus, this dissertation involves a literature based risk assessment of lead contamination of drinking water supply in the Northwest Christchurch Zone and particularly, its effects on young children. The selection process of the research studies is based on whether they offer accurate and suitable information on the risk of adverse mental function in infants and young children due to environmental lead exposure; whether the studies have been peer reviewed by qualified scientists; whether the results are confirmed by other studies; and involves only human subjects. Future research may consider whether lead levels in drinking water are seasonal; whether these values are significant to health or, the possible role of the government in tightening product controls when monitoring the availability and health risk of high lead drinking water supply plumbing products available in the New Zealand market.

The purpose of this study was to investigate relationships between person-environment fit (P-E fit) and health behavior in residence hall students, in order to better understand the effects of an environment on health behavior. Students living in the six wellness residence halls on the campus of Ball State University were asked to participate by filling out two questionnaires as part of a health screening. Participants completed 113 University Residence Environment Scale (URES), real and ideal form, questionnaires and 210 Healthier People health risk appraisal (HRA) questionnaires. Sixty-nine complete sets of data were used in this study. Pearson r correlation coefficients for the 10 URES subscale scores, a total P-E fit score, and health risk were used to examine the relationships between P-E fit and health behavior. Correlations of statistical significance were not found. From the results of this study, a relationship between P-E fit and health behavior is not supported. Further study is recommended. / Institute for Wellness

The purpose of this study was to determine behavioral risk factor prevalence at Lands' End, Incorporated, and to prioritize these risk factors for health promotion program intervention. A randomly-selected stratified sample of employees from three employee classifications were invited to participate in the study anonymously. Of the 493 subjects selected, 333 (67.5%) completed the Centers for Disease Control's Behavioral Risk Factor Survey. Population Descriptive Statistics were used to determine prevalence estimates for nine risk factors. Sedentary lifestyle was found to be the most prevalent risk factor (47.4%), followed by obesity (29.4%), acute drinking (26.4%), and lack of safety belt use (22.0%).The Hanlon Method, a process to prioritize health interventions, was used to determine risk factor intervention priorities. This method combines four components; size of the problem, seriousness of the problem, solubility, and pertinent organizational factors, into an Overall Priority Rating formula. Sedentary lifestyle received the highest priority rating, followed by obesity, safety belt use, and smoking. / Institute for Wellness

A prospective study was conducted on a group of 160 students from 9 to 14 years of age with learning disabilities to predict neuropsychological outcome using perinatal information as predictors. Perinatal information was obtained from the Maternal Perinatal Scale (MPS) (Dean & Gray, 1985). Subjects' neuropsychological functioning was assessed by the Short Neuropsychological Screening Device (SNSD) (Reitan & Herring, 1985). Information concerning subjects' intelligence was obtained from the Wechsler Intelligence Scale for Children-III (WISC-III) administered within the past two years. Hollingshead's Four Factor Index of Social Status was employed to determine subjects' socioeconomic status. A stepwise multiple regression analysis yielded a regression model that contained a subset of 7 perinatal risk factors, involving: (1) Obstetric History; (2) Gestational Age; (3) Psychosocial Events; (4) Delivery; (5) Intrauterine Stress; (6) Teratogenic Stress; and (7) Fetal Oxygenation. A hierarchical regression analysis was further performed to examine if adding socioeconomic and intellectual information to the regression model could increase the prediction of neuropsychological outcome. Results showed that up to 82% of the variability in the neuropsychological outcome was explained by the linear composite of the 7 risk factors. When socioeconomic and intellectual information were added to the regression model, the prediction of neuropsychological outcome was significantly improved. About 201 of the students with learning disabilities in the present study were found to display symptoms similar to minimal brain damage (MBD) relating to poor visual-motor integration, underdeveloped language skills, and aphasic conditions. The results support the theory of a "continuum of reproductive casualty" proposed by Pasamanick et al. (1956). The importance of detecting early indicators of neuropsychological deficits in at risk children was further suggested by the present study. / Department of Educational Psychology

For employees to optimally perform at work, it is important that they are healthy. The employee is under constant work pressures that affects their health behaviour. The aim of this research is to look at the evident health risks of employees working within a financial institution, to analyze how physical activity influences these health risk factors and their medical costs. In this study a sample of 9860 self selected employees, aged between 18 and 64 (35.3 ± 10.7 years), was used. These employees are spread over all the provinces of South Africa and from all racial groupings. Differentiation was made between employees who were on chronic medication and those who were not. The Health Risk Assessment (HRA) questionnaire developed and provided by the medical aid of the institution was used as the analysis tool. Medical expenditures of the sample group were also provided by the medical aid and investigated. A national network of registered Biokineticists administered the implementation of the HRA, based on a set protocol. ANOVA was used for statistical data analysis - providing descriptive and summarising statistics. One-way analysis of variance was used to determine relationships between variables. It is clear from the descriptive data that the tendencies of selected health risks were high. The results also show that 37.6% (Diastolic) and 47.87% (Systolic) of the sample group comply with the normal borders of blood pressure. With regards to BM3, 32.3% were overweight and 25.3% within the boundaries of obesity. The average cholesterol of the group is 4.4mmol.L-l. The Physical activity levels were determined using an activity algorithm developed by the medical aid of the institution (described in detail in the thesis). Results show a low level of physical activity index (7.18 + 3.05) within the sample group. No statistical significance could be found between physical activity levels and medical expenditure, although those who are highly active seemed to have higher expenditure than those who are inactive. / Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2009.

For employees to optimally perform at work, it is important that they are healthy. The employee is under constant work pressures that affects their health behaviour. The aim of this research is to look at the evident health risks of employees working within a financial institution, to analyze how physical activity influences these health risk factors and their medical costs. In this study a sample of 9860 self selected employees, aged between 18 and 64 (35.3 ± 10.7 years), was used. These employees are spread over all the provinces of South Africa and from all racial groupings. Differentiation was made between employees who were on chronic medication and those who were not. The Health Risk Assessment (HRA) questionnaire developed and provided by the medical aid of the institution was used as the analysis tool. Medical expenditures of the sample group were also provided by the medical aid and investigated. A national network of registered Biokineticists administered the implementation of the HRA, based on a set protocol. ANOVA was used for statistical data analysis - providing descriptive and summarising statistics. One-way analysis of variance was used to determine relationships between variables. It is clear from the descriptive data that the tendencies of selected health risks were high. The results also show that 37.6% (Diastolic) and 47.87% (Systolic) of the sample group comply with the normal borders of blood pressure. With regards to BM3, 32.3% were overweight and 25.3% within the boundaries of obesity. The average cholesterol of the group is 4.4mmol.L-l. The Physical activity levels were determined using an activity algorithm developed by the medical aid of the institution (described in detail in the thesis). Results show a low level of physical activity index (7.18 + 3.05) within the sample group. No statistical significance could be found between physical activity levels and medical expenditure, although those who are highly active seemed to have higher expenditure than those who are inactive. / Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2009.

Quantitative soil ingestion studies employing a mass balance tracer approach have been used to determine soil ingestion rate for use in human health risk assessments (HHRAs). Past studies have focused on soil ingestion in populations living in urban/suburban environments and the results have been highly variable. Moreover, there is a paucity of reliable quantitative soil ingestion data to support human health risk assessments of other lifestyles that may be predisposed to ingesting soil, such as indigenous populations following traditional lifestyles. Thus, the primary objective of the research was to determine if populations following lifestyles typical of traditional land use practices in rural or wilderness areas ingest more soil than populations living in urban or suburban environments. Further, the research investigated the use of alternative mass balance tracers, specifically isotopes of the 238U and 232Th decay series, to reduce soil ingestion estimate variability. Mass balance tracer methods were developed and validated in a pilot canine study, and methods using isotope tracers were adapted to permit quantification of sediment ingestion in the benthic fish Moxostoma macrolepidotum (Shorthead Redhorse Sucker). A pilot human soil ingestion study of 7 subjects from an Aboriginal community in British Columbia was conducted over a 3-week period. The mean soil ingestion rate calculated using the daily means of the 4 elemental tracers with the lowest food-to-soil ratios (i.e., Al, Ce, La, Si) was observed to be approximately 74 mg d-1 (standard deviation 91 mg d-1), The median soil ingestion rate was 60 mg d-1, and the 90th percentile was 196 mg d-1. These soil ingestion rate estimates are higher than those currently recommended for HHRAs of adults, and higher than those obtained in most previous studies of adults. However, the estimates are much lower than the earlier qualitative assessments for subsistence lifestyles (i.e., 330-400 mg d-1). The study results also demonstrated that isotopes of the 238U and 232Th decay series radionuclide are not reliable mass balance tracers for estimating soil ingestion in humans; however, they may be useful for quantifying soil and sediment ingestion in wildlife.

This study sought to characterize the risk to human health from dietary mercury (Hg) exposure in two Inuit communities, Repulse Bay and lgloolik. Hg exposure was estimated using food frequency questionnaires. Body burden was determined by measuring Hg in hair samples. Estimated average daily Hg exposures for women of child-bearing age were 21.3 mug in Repulse Bay, and 6.0 mug in lgloolik; the general population exposures were 43.1 mug in Repulse Bay and 23.2 mug in lgloolik. Average hair concentrations were 2.1 mg/kg and 2.8 mg/kg in Repulse Bay, 2.1 mg/kg and 6.2 mg/kg in lgloolik for women of child-bearing age and the general population respectively. No participants had concentrations above the "at risk" concentration of 30 mg/kg. Significant correlations were observed between hair Hg concentration and traditional food intake. These results do not necessitate direct intervention, but validate continued monitoring of Hg exposure in Nunavut.

Thesis (M.A.)--Carleton University, 2003. / Includes bibliographical references (p. 141-151). Also available in electronic format on the Internet.