The objective of this project is to combine different sensors of environmental conditions and health status.
In a project funded by ADEME in the research project call of ANSES, participants of the RECORD Study will wear a noise sensor and devices measuring the electrodermal activity, blood pressure, and heart rate in ambulatory circumstances. As this pilot study is grounded on the RECORD GPS Study, the participants will also wear a GPS and an accelerometer. The objective will be to investigate the reactivity of the cardiovascular system to the different sources of noise and delays in the recovery. This pilot study is conducted by Julie Méline, a post-doctorate student in the RECORD group.
The ninth information letter of the RECORD Study has been released and has been sent electronically to the research and public action community.
This issue of the letter summarizes a work on the contextual determinants of fat mass assessed by bioelectrical impedance analysis. In addition to the residential environment, this study was able to take into account (using data from CNAV) the geographic work environment of the participants and their work economic sector. This study shows among other aspects that men who were working in the Construction sector and in the Transportation and communication sector had a higher percentage of fat mass.
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The data collection in the first wave of the RECORD GPS Study started in February 2012 and ended in June 2013.
The GPS study was proposed to 410 participants of the RECORD Cohort. Among them, 247 accepted to participate, but 9 abandoned during data collection and 2 could not be followed due to problems with the devices. Overall, data were collected for 236 participants, representing a completion rate of 57,6%.
The RECORD GPS Study is the first one that collected GPS and accelerometer data and precise survey mobility data with an electronic application for 7 days. The second wave of the RECORD GPS Study, which will use innovative tools, will start in September 2013.
The RECORD GPS Study received financial support from the Ministry of Ecology (DGITM) and from the CERTU, from INPES, from IReSP, from STIF, from the ARS of Ile-de-France, from the Regional Council of Ile-de-France, and from RATP. We warmly thank these institutions.
The aim of this study was to investigate the associations between the spatial accessibility to specific types of sports facilities and the practice of the corresponding sports.
Four categories of sports were studied: team sports, racket sports, swimming and related activities, and fitness. The spatial accessibility to swimming pools was associated with swimming and related sports, even after adjustment for individual/contextual factors. The spatial accessibility to facilities was not related to the practice of the other sports. High neighborhood income was associated with the practice of a racket sport and fitness.
The eighth information letter of the RECORD Study was recently sent to the participants of the study.
Two specific studies are reported in this issue of the letter. The first work, which was conducted by the University of Montreal and published in the “Journal of Hypertension”, sought to assess whether a typology of neighborhoods based on a large number of environmental factors was associated with the blood pressure of the participants. The second study examined whether disparities in the spatial accessibility to different types of sport facilities were associated with the practice of the corresponding sports.
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In the second wave of the RECORD Study, we rely on the VERITAS interactive web mapping software to survey the participants of the study.
Developed in collaboration between Inserm and University of Montreal, this software allows one to geocode the multiple activity places of participants and to draw the boundaries of their residential neighborhood as they perceive it.
On the one hand, the published article describes in details the different tools available in the VERITAS software. On the other hand, in an attempt to contribute to a “contextual expology” (as a subdiscipline interested in the places and times of environmental exposures), it examines the indicators that can be constructed based on the data collected.
A first series of indicators is related to the spatial behavior of participants, i.e., to their individual patterns of mobility in space and time. A second series of indicators aims to assess the environmental exposures that people face in their daily mobility (in their different activity places).
To address the concerns of a literature mainly focused on residential environments, the objective of the work is to take into account daily mobility in the study of the effects of the environment on health.
In the RECORD GPS Study, participants are asked to wear on a belt at the hip a GPS and an accelerometer from wake up to bedtime for 7 consecutive days.
After a preprocessing of the resulting data by automatic algorithms, participants are surveyed with a computer application that allows one to visualize on a map the trajectories of mobility, to confirm or modify the information imputed by the algorithms, and to answer to questions on the activities practiced at the different places and on the transportation modes employed.
Based on these data, we will be able (i) to describe precisely the transportation habits of participants; (ii) to examine the extent to which active transportation contribute to the total physical activity of people; (iii) to assess the effects of transportation habits on health, especially on body weight and fat; and (iv) to identify the characteristics of the environments that influence mobility and transportation habits, and in turn health.
Moreover, the trajectories of mobility collected by GPS will allow us to determine exposures to different obesogenic characteristics of the environment that take into account the multiple contexts of daily lives.
The study is conducted in close collaboration with the University of Montreal and received financial support from institutions from the health field (IReSP, INPES, ARS of Ile-de-France) and from the transportation field (DGITM and CERTU from the Ministry of Ecology, STIF, RATP, Direction of Transportation of the Ile-de-France Regional Council).
On July 24 2012, 76 participants had already been included in the GPS Study.
The seventh information letter of the RECORD Study has been sent to the participants of the study.
In a first article, the information letter summarizes the last developments in our efforts to take into account daily mobility phenomena in environment – health studies. The article reports descriptive data on the mobility of participants as assessed with our VERITAS survey of regular destinations. It also provides information on the recent advances related to the integration of GPS technologies and accelerometry in the RECORD Study.
A second article is devoted to the issue of healthcare utilization. This work examines socio-territorial disparities in spatial access to different healthcare services and investigates individual and contextual determinants of healthcare utilization of participants with dyslipidemia.
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Urbanization and socioeconomic profiles of neighborhoods related to blood pressure (Journal of Hypertension)
This work conducted in collaboration between the University of Montreal and Inserm provides new information on the relationships between residential neighborhoods and blood pressure.
A previous work based on the RECORD Study had shown that socioeconomic position of the residential neighborhood, especially neighborhood educational level, was associated with the systolic blood pressure of participants.
In this new analysis, Andrea van Hulst from University of Montreal considered a large number of characteristics related to the physical environment, to the service environment, and to the social environment to construct a typology of neighborhoods. Such a classification allowed us to divide the RECORD Study territory into 6 categories of neighborhoods with differing patterns of urbanization, socioeconomic level, and social interactions.
Analyses showed that systolic blood pressure was higher among participants living in socially disadvantaged urban neighborhoods. This relationship persisted after accounting for the socioeconomic characteristics of participants and of their residential neighborhood and for different risk factors of hypertension.
Moreover, a negative relationship was documented between the degree of urbanization of the residential neighborhood and diastolic blood pressure, with a higher blood pressure in the least urbanized neighborhoods.
These new findings provide additional insight on the socio-territorial profile of hypertension.
In an article published in Preventive Medicine, Noëlla Karusisi sought to identify the characteristics of residential environments associated with the practice of jogging.
The objective of the study was to identify the characteristics of geographic environments that intervene as environmental barriers to a regular physical activity and could lead to the failure of traditional health education and promotion programs in certain neighborhoods.
The analyses showed that different factors of the physical environment and social interactional environment were associated with the practice of jogging and with the location of jogging (inside or outside the neighborhood).
The presence and the quality of green and open spaces, the presence of monuments and enjoyable sites, and a high degree of social cohesion in the neighborhood increased the probability of jogging over the previous 7 days.
Moreover, the presence and quality of green and open spaces, the objective surface of green spaces, and the presence of a lake or waterway in the neighborhood increased the likelihood to jog inside rather than outside one’s residential neighborhood.
This study suggests that all geographic environments do not support the practice of a regular physical activity in a similar way.