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PubMed2006

Engaging urban residents in assessing neighborhood environments and their implications for health.

Researchers have worked to delineate the manner in which urban environments reflect broader social processes, such as those creating racially, ethnically and economically segregated communities with vast differences in aspects of the built environment, opportunity structures, social environments, and environmental exposures. Interdisciplinary research is essential to gain an enhanced understanding of the complex relationships between these stressors and protective factors in urban environments and health. The purpose of this study was to examine the ways that multiple factors may intersect to influence the social and physical context and health within three areas of Detroit, Michigan. We describe the study design and results from seven focus groups conducted by the Healthy Environments Partnership (HEP) and how the results informed the development of a survey questionnaire and environmental audit tool. The findings from the stress process exercise used in the focus groups described here validated the relevance of a number of existing concepts and measures, suggested modifications of others, and evoked several new concepts and measures that may not have been captured without this process, all of which were subsequently included in the survey and environmental audit conducted by HEP. Including both qualitative and quantitative methods can enrich research and maximize the extent to which research questions being asked and hypotheses being tested are driven by the experiences of residents themselves, which can enhance our efforts to identify strategies to improve the physical and social environments of urban areas and, in so doing, reduce inequities in health.

Adolescent↗

PubMed2004

Measuring the environment for friendliness toward physical activity: a comparison of the reliability of 3 questionnaires.

OBJECTIVES: We tested the reliability of 3 instruments that assessed social and physical environments. METHODS: We conducted a test-retest study among US adults (n = 289). We used telephone survey methods to measure suitableness of the perceived (vs objective) environment for recreational physical activity and nonmotorized transportation. RESULTS: Most questions in our surveys that attempted to measure specific characteristics of the built environment showed moderate to high reliability. Questions about the social environment showed lower reliability than those that assessed the physical environment. Certain blocks of questions appeared to be selectively more reliable for urban or rural respondents. CONCLUSIONS: Despite differences in content and in response formats, all 3 surveys showed evidence of reliability, and most items are now ready for use in research and in public health surveillance.

Adult↗

PubMed2004

Regulating environments to reduce obesity.

The marked increase in the prevalence of obesity appears to be attributable to environmental conditions that implicitly discourage physical activity while explicitly encouraging the consumption of greater quantities of energy-dense, low-nutrient foods. In the United States food environment, consumers are bombarded with advertising for unhealthy food, and receive inadequate nutritional information, especially at restaurants. In the US school environment children have access to sugary sodas and unhealthy a la carte foods in their cafeterias, at the same time getting inadequate physical activity and nutrition education. In the built environment, sprawl has reduced active living. We describe these environments and explore the potential effects of regulatory measures on these environments. In the United States, regulatory opportunities exist at the national, state and local levels to mandate action and to allocate funds for promising health-promoting strategies. Regulatory approaches, much like litigation, can transform the entire environment in which corporations operate. Even with incomplete enforcement of rules, they send a public message about what is acceptable behavior for corporations and individuals. Additionally, because the United States is party to many multilateral and bilateral trade agreements and is an active participant in the GATT/WTO framework, US regulatory actions promise to have a beneficial impact both domestically and globally.

Adolescent↗

PubMed2000

An overview of NASA ISS human engineering and habitability: past, present, and future.

The International Space Station (ISS) is the first major NASA project to provide human engineering an equal system engineering an equal system engineering status to other disciplines. The incorporation and verification of hundreds of human engineering requirements applied across-the-board to the ISS has provided for a notably more habitable environment to support long duration spaceflight missions than might otherwise have been the case. As the ISS begins to be inhabited and become operational, much work remains in monitoring the effectiveness of the Station's built environment in supporting the range of activities required of a long-duration vehicle. With international partner participation, NASA's ISS Operational Habitability Assessment intends to carry human engineering and habitability considerations into the next phase of the ISS Program with constant attention to opportunities for cost-effective improvements that need to be and can be made to the on-orbit facility. Too, during its operations the ISS must be effectively used as an on-orbit laboratory to promote and expand human engineering/habitability awareness and knowledge to support the international space faring community with the data needed to develop future space vehicles for long-duration missions. As future space mission duration increases, the rise in importance of habitation issues make it imperative that lessons are captured from the experience of human engineering's incorporation into the ISS Program and applied to future NASA programmatic processes.

Equipment Design↗

PubMed2005

Fungal types and concentrations from settled dust in normal residences.

Analysis of settled dust collected from carpeting and furnishings is occasionally used by investigators to determine whether an environment contains unusual fungi. Little information is available concerning the types and concentrations of culturable fungi present on textile surfaces in normal residential settings not affected by unusual mold reservoirs, such as from fungal growth sites within the built environment. This study presents the results of the collection and analysis of surface dust from 26 residential environments that were prescreened by interview, physical inspection, and air sampling to limit the surface dust collection to structures in which there was no history of water intrusion, flooding, plumbing leaks, signs of mold growth, or evidence of unusual airborne fungal spore types or concentrations. In those structures found to have no history or indications of water events or unusual fungi, surface dust was vacuumed from prescribed horizontal areas on carpet and textile-covered furnishings. These samples were then subjected to fungal culture, from which viable colonies were enumerated and identified. Based on the study results, it does not appear reasonable that the frequently quoted total fungi concentration exceeding 10(5) CFU/g is definitive evidence that a residential surface is contaminated with unusual amounts of culturable fungi. Collocated samples collected from eight side-by-side carpets sections revealed poor reproducibility. While settled dust sampling may be appropriate for determining the fungal status of a localized area, or as a gross screening tool, using settled dust results alone to establish the presence of unusual fungal types or concentrations within a structure appears to be inappropriate, and using settled dust results with other investigative methods, such as visual observations and air sampling, requires cautious interpretation.

Air Pollution, Indoor↗

PubMedDate not supplied

Criteria for healthy urban environments.

Indicators derived from a taxonomy of environmental hazards to health can help in assessing the health of a city and its citizens. These criteria may also be related to a city's contribution to the health of its natural environment. The proposed indicators for the city's and the citizens' "sickness" and health are intended to form a matrix, modified by experience. This may generate a database for monitoring changes. Thereafter it could be applied to studies comparing the health of the built environment with that of its human inhabitants, and its natural environment. Ultimately such studies may be used to prevent health hazards to the city and to protect and promote city health. Once the causes of the variables of environmental and human health are determined, attention could also be given to aspects of human health not directly related to those of the city. I discuss the advantages of such a holistic approach over "salad" lists, single theory or issues, and fragmented approaches. The underlying problems of the human condition in cities are so nearly indeterminable and unaddressable that ultimately decisions on policies and their implementations must be based on intuition. However, good intuition works on the best information available.

Canada↗

PubMedDate not supplied

Increasing the health promotive capacity of human environments.

This article offers an integration of two different perspectives on health promotion research and practice: one emphasizing the concept of community capacity for health improvement and the other focusing on the notion of health supportive environments. These two approaches generally have emphasized different kinds of community assets for health promotion. Specifically, community capacity research has focused on the cultivation of human resources (e.g., collaborative coalitions, participatory decision-making, health education strategies) for health promotion, whereas environmentally oriented research has underscored the influence of material resources (e.g., the built environment, natural resources, technological infrastructure) on important health behaviors and outcomes. Combining these two streams of health promotion research yields a broader understanding of the health promotive capacity of human environments and suggests several "best process" guidelines for enhancing health promotion practice.

Community Health Planning↗

PubMed2006

Impact of dynamic airflow on human thermal response.

UNLABELLED: Airflow fluctuation is an important factor affecting indoor thermal environments and human thermal response. In this study, dynamic airflows with different fluctuation characteristics were generated by a dynamic air supply terminal. The influence of three different kinds of airflows, constant airflow, simulated natural airflow and sinusoidal airflow, on thermal comfort was studied. Subjective experiments indicated that a dynamic airflow can cause a stronger cold sensation, and that air movement with 1/f fluctuations similar to natural wind is more acceptable than other dynamic airflows in warm environments. Moreover, the impact of draughts in dynamic airflows on human thermal response is different in neutral-warm (30 degrees C) and cool-neutral (26 degrees C) thermal environments. PRACTICAL IMPLICATIONS: By means of a dynamic air supply terminal it is possible to generate artificial airflows that simulate natural wind indoors. This kind of airflow with higher velocity is more comfortable and causes less draught sensation than the constant airflows supplied by conventional fans. While the cooling effect of this airflow is utilized in the built environment, the design temperature of air-conditioning system can be increased and the amount of energy consumption can be reduced dramatically.

Adult↗

PubMed2001

Chains of damages and failures in a metropolitan environment: some observations on the Kobe earthquake in 1995.

The interaction and the couple effects that may occur as induced and indirect consequences of any triggering hazard in metropolitan areas is one of the most important problems to be tackled during disasters, as the Kobe earthquake in 1995 showed very clearly. The analysis of direct, secondary and indirect effects of the Kobe earthquake suggests to substitute the concept of chain of losses and failures to the simple couple hazardous event-damages which is currently used. Not only parameters related to physical weakness or strength of the built environment should be considered by scientists, experts and decision-makers. Organisational, social, and systemic factors are equally crucial to understand the magnified dimension of disasters at increasing levels of exposed systems vulnerability. Linking failures due to different kinds of vulnerability one to the other permits to reconstruct complete event scenarios, where social and organisational elements are not simply added to the 'hard' components of cities, but contribute to explain why failures and losses occurred and why it took so long to repair them. Lifeline damage assessment provides a good example to show how physical, organisational and systemic vulnerabilities are intimately connected one to the other. The point of view from which governance problems related to prevention and emergency preparedness will be looked at is that of an urban and regional planner. When planners look for design solutions suitable for a specific town or region, they must constantly bridge between hard technical matters and social and economical concerns. Furthermore, they are forced to consider in their projects spatial and geographic dimensions. Those two typical features of planners' approach to problem solving can be interesting for scholars in the field of risk assessment and mitigation research.

Disaster Planning↗

PubMed2003

Developing a framework for assessment of the environmental determinants of walking and cycling.

The focus for interventions and research on physical activity has moved away from vigorous activity to moderate-intensity activities, such as walking. In addition, a social ecological approach to physical activity research and practice is recommended. This approach considers the influence of the environment and policies on physical activity. Although there is limited empirical published evidence related to the features of the physical environment that influence physical activity, urban planning and transport agencies have developed policies and strategies that have the potential to influence whether people walk or cycle in their neighbourhood. This paper presents the development of a framework of the potential environmental influences on walking and cycling based on published evidence and policy literature, interviews with experts and a Delphi study. The framework includes four features: functional, safety, aesthetic and destination; as well as the hypothesised factors that contribute to each of these features of the environment. In addition, the Delphi experts determined the perceived relative importance of these factors. Based on these factors, a data collection tool will be developed and the frameworks will be tested through the collection of environmental information on neighbourhoods, where data on the walking and cycling patterns have been collected previously. Identifying the environmental factors that influence walking and cycling will allow the inclusion of a public health perspective as well as those of urban planning and transport in the design of built environments.

Adult↗

PubMed2006

Constructing indices representing supportiveness of the physical environment for walking using the Rasch measurement model.

BACKGROUND: The objectives of this study were to use the Rasch model to 1) assess the psychometric properties of a physical environmental audit instrument and 2) to develop indices of interrelated environmental attributes that summarize environmental supportiveness for walking. METHODS: A set of items were derived representing two conceptual physical environmental constructs: 1) functional/safety, and; 2) aesthetics. Ad hoc criteria based on point-biserial and Rasch-based fit statistics were used to examine the construct validity and internal reliability of the two constructs. RESULTS: The Rasch-based fit statistics assisted in identifying 12 items that belonged to the functional/safety construct and 4 items that belonged to the aesthetic construct. The reliability of the two constructs were low to moderate (functional/safety r(beta) = 0.19 and aesthetics r(beta) = 0.35). CONCLUSION: Given the vast number of built environmental attributes, a means of developing summary indices is essential. Future studies should assess the reliability and validity of indices that summarize physical environmental characteristics conducive to walking before testing them in predictive models of physical activity. More research examining procedures for measuring the built environment and techniques for analyzing environmental data are needed to guide future research in this area.

Journal Article↗

PubMed2006

Active commuting to school: Associations with environment and parental concerns.

PURPOSE: This study examined the association of objective and perceived neighborhood environmental characteristics and parent concerns with active commuting to school, investigated whether parental concerns varied by environmental characteristics, and compared the association of the perceived environment, parental concerns, and objective environment on the outcome active commuting to school. METHODS: Randomly selected parents of children (aged 5-18 yr), in neighborhoods chosen for their variability in objectively measured walkability and income, completed questionnaires about their neighborhood environment, concerns about children walking to school, and children's behavior (N = 259). Objective measures of the environment were available for each participant and each neighborhood. Logistic regression analyses were used to investigate the relationships among environment, parental concerns, and walking or biking to or from school at least once a week. RESULTS: A parental concerns scale was most strongly associated with child active commuting (odds ratio: 5.2, 95% CI: 2.71-9.96). In high-income neighborhoods, more children actively commuted in high-walkable (34%) than in low-walkable neighborhoods (23%) (odds ratio: 2.1, 95% CI: 1.12-3.97), but no differences were noted in low-income neighborhoods. Parent concerns and neighborhood aesthetics were independently associated with active commuting. Perceived access to local stores and biking or walking facilities accounted for some of the effect of walkability on active commuting. CONCLUSION: Both parent concerns and the built environment were associated with children's active commuting to school. To increase active commuting to school, interventions that include both environmental change and education campaigns may be needed.

Adolescent↗

PubMed2005

Childhood obesity, prevalence and prevention.

Childhood obesity has reached epidemic levels in developed countries. Twenty five percent of children in the US are overweight and 11% are obese. Overweight and obesity in childhood are known to have significant impact on both physical and psychological health. The mechanism of obesity development is not fully understood and it is believed to be a disorder with multiple causes. Environmental factors, lifestyle preferences, and cultural environment play pivotal roles in the rising prevalence of obesity worldwide. In general, overweight and obesity are assumed to be the results of an increase in caloric and fat intake. On the other hand, there are supporting evidence that excessive sugar intake by soft drink, increased portion size, and steady decline in physical activity have been playing major roles in the rising rates of obesity all around the world. Consequently, both over-consumption of calories and reduced physical activity are involved in childhood obesity. Almost all researchers agree that prevention could be the key strategy for controlling the current epidemic of obesity. Prevention may include primary prevention of overweight or obesity, secondary prevention or prevention of weight regains following weight loss, and avoidance of more weight increase in obese persons unable to lose weight. Until now, most approaches have focused on changing the behaviour of individuals in diet and exercise. It seems, however, that these strategies have had little impact on the growing increase of the obesity epidemic. While about 50% of the adults are overweight and obese in many countries, it is difficult to reduce excessive weight once it becomes established. Children should therefore be considered the priority population for intervention strategies. Prevention may be achieved through a variety of interventions targeting built environment, physical activity, and diet. Some of these potential strategies for intervention in children can be implemented by targeting preschool institutions, schools or after-school care services as natural setting for influencing the diet and physical activity. All in all, there is an urgent need to initiate prevention and treatment of obesity in children.

Child↗

PubMed1998

Hypersensitivity pneumonitis: a sentinel event investigation in a wet building.

Hypersensitivity pneumonitis (HP) as a sentinel event implies a remediable exposure and an exposed cohort that require evaluation. A patient with HP convincingly related to her building led to a questionnaire survey in follow-up. Building coworkers demonstrated substantially higher symptom rates than did controls in five other buildings, although no further cases of disease were identified. It is likely that moisture sources in the building included an oversized cooling system and below-grade moisture, but the building met all applicable regulations and standards. Screening investigations for disease are not mandated by law and are often not conducted, in part because cost coverage is unclear. The absence of regulatory or professional standards that adequately address moisture in the built environment forces occupational health professionals to rely on disease documentation strategies to justify intervention.

Alveolitis, Extrinsic Allergic↗

PubMed1998

Competitive behaviour in an island population of house mice, Mus domesticus.

Because of the cryptic nature of small mammals inhabiting vegetation with widely scattered food resources, little is known about the behavioural mechanisms underlying their spatial dispersion. While house mice exploiting human-built environments attempt to exclude intruders aggressively from small territories that contain concentrated food resources, comparative tests show that the grassland mouse, M. spretus, establishes dominance relationships and then avoids sites used by dominant competitors, probably to avoid displacement from sites that provide safety from predators. We carried out further comparative tests to examine competitive behaviour and response to odours from same-sex conspecifics among house mice living ferally on the Isle of May, U.K., using recently captured adult males (N=62) and females (N=23). In contrast both to house mice caught from buildings and to the grassland M. spretus, feral house mice from the Isle of May showed no aggressive, defensive or cautious behaviour on meeting a same-sex conspecific, with the exception of one aggressive male. Scent marks had no effect on their response to a competitor, although intruders in a scent-marked arena showed a significant sex difference in choice between a clean nest site versus one soiled by a same-sex resident: males spent more time in the soiled nest while females spent more time in the clean one. We propose that the lack of aggression among feral May mice may be due to the infeasibility of defending large territories, containing scattered resources, on an island where there is no real predation risk. We suggest that this hypothesis may explain the lower aggression and higher densities that are characteristic of populations of small mammals, reptiles and birds living on small islands. Copyright 1998 The Association for the Study of Animal Behaviour.

Journal Article↗

PubMed2005

Urbanization and the loss of resource lands in the chesapeake bay watershed.

We made use of land cover maps, and land use change associated with urbanization, to provide estimates of the loss of natural resource lands (forest, agriculture, and wetland areas) across the 168,000 km2 Chesapeake Bay watershed. We conducted extensive accuracy assessments of the satellite-derived maps, most of which were produced by us using widely available multitemporal Landsat imagery. The change in urbanization was derived from impervious surface area maps (the built environment) for 1990 and 2000, from which we estimated the loss of resource lands that occurred during this decade. Within the watershed, we observed a 61% increase in developed land (from 5,177 to 8,363 km2). Most of this new development (64%) occurred on agricultural and grasslands, whereas 33% occurred on forested land. Some smaller municipalities lost as much as 17% of their forest lands and 36% of their agricultural lands to development, although in the outlying counties losses ranged from 0% to 1.4% for forests and 0% to 2.6% for agriculture. Fast-growing urban areas surrounded by forested land experienced the most loss of forest to impervious surfaces. These estimates could be used for the monitoring of the impacts of development across the Chesapeake Bay watershed, and the approach has utility for other regions nationwide. In turn, the results and the approach can help jurisdictions set goals for resource land protection and acquisition that are consistent with regional restoration goals.

Agriculture↗

PubMed1977

A study of ergonomics factors in washbasin design.

A 4-week UNESCO-sponsored mission to the Department of Architecture, Karadeniz Technical University in Eastern Turkey, gave an opportunity to apply ergonomics techniques to some aspects of that country's domestic washbasin design. The study was intended to provide experience in questionnaire design and administration, in the application of psycho-physical methods, and to highlight the importance of determining user characteristics and preferences with regard to the built environment. A field study elicited information on dimensions and positioning of existing wash-basins and ancillary equipment and the opinions of users as to the suitability of these features in relation to the activities performed. A laboratory study, using an adjustable rig permitting variation in the heights of basin, taps and mirror/shelf, followed. The data obtained on preferred heights of these items led to the conclusions that basin height should be increased to between 95 and 100 cm to satisfy the majority of users; tap height above the basin should be reduced to about 11 cm; the shelf and lower edge of a mirror sited above the basin should be 136 cm above the floor; and a clear space of 110 cm should be available between the front of the basin and a wall or other obstruction. Suggestions on other design aspects of the bathroom, resulting from the study, are discussed.

Journal Article↗

PubMed1991

Discrepant legacies: premature mortality in two industrial towns.

Previous research has indicated that, while large parts of Middlesbrough and Sunderland appear to be equally severely deprived, premature mortality in the early 1980s was substantially worse in Middlesbrough. Postcoded mortality data from 1975 to 1986 were assembled, to ascertain whether this disparity reflected a temporary or consistent difference between these two towns. In addition, to enable detailed consideration of the differentials in premature mortality, data on cause of death for 23 cause-groups were assembled for the 6-year period 1978 to 1983. The results show that, throughout the 12-year period, death rates below the age of 65 years in Middlesbrough's poorer areas consistently exceeded death rates in comparable areas of Sunderland by a large margin. This disparity is demonstrated to affect both sexes and all age-groups below 65. Middlesbrough's excess mortality was evident for most causes of death (19 out of 22 causes among men, and 16 out of 23 causes among women), with cerebrovascular disease and genitourinary malignancy among women being the only major exceptions. Possible explanations for this wide difference are considered. The conclusions of research in Lancashire, suggesting that the antecedents of present differences may be found in infant health disparities from the 1920s and 1930s, do not seem to apply in this instance. The possibility that unmeasured differences in levels of poverty or the suddenness of its onset may be contributory influences remains problematic. Individual lifestyle is not considered a plausible explanation, but possible differences in the provision and use of health services between the two towns are thought worthy of closer investigation. It is also suggested that environmental differences, in terms of the built environment and atmospheric pollutants require closer scrutiny.

Adolescent↗