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Walking for transportation among Latino adults in San Diego County: who meets physical activity guidelines?

ABSTRACT: BACKGROUND:U.S. Latinos engage in nonleisure-time walking (NLTW) more than other ethno-racial groups. Studies are needed to explore factors associated with NLTW to inform interventions for effective physical activity promotion. PURPOSE:To examine the social-ecological correlates of NLTW among Mexican-origin Latinos. METHODS:Individual, social, and environmental level factors and PA were assessed in a telephone survey completed by 672 Mexican-origin adults randomly sampled in San Diego County. Data were collected in 2006 and analyzed in 2009. RESULTS:Participants were mostly female (71%), with an average age of 39 years. Less than one-third met PA guidelines for NLTW (29%). Structural equation modeling showed that NLTW was positively associated with being female, but negatively associated with living in the U.S. ? 12 years, and being U.S.-born. CONCLUSIONS:In this sample NLTW differed by various indicators of acculturation and gender. These findings might help inform the development of interventions to promote NLTW and thus physical activity in Mexican-origin adults.

SUBMITTER: Martinez SM

PROVIDER: S-EPMC3898633 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature

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Walking for transportation among Latino adults in San Diego County: who meets physical activity guidelines?

Martinez Suzanna M SM Arredondo Elva M EM Roesch Scott S Patrick Kevin K Ayala Guadalupe X GX Elder John P JP

Journal of physical activity & health 20110901 7

<h4>Background</h4>U.S. Latinos engage in nonleisure-time walking (NLTW) more than other ethno-racial groups. Studies are needed to explore factors associated with NLTW to inform interventions for effective physical activity promotion.<h4>Purpose</h4>To examine the social-ecological correlates of NLTW among Mexican-origin Latinos.<h4>Methods</h4>Individual, social, and environmental level factors and PA were assessed in a telephone survey completed by 672 Mexican-origin adults randomly sampled i ...[more]

PMID: 21885880

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Project description:The Pacific coast tick, Dermacentor occidentalis Marx, is found throughout California and can harbor agents that cause human diseases such as anaplasmosis, ehrlichiosis, tularemia, Rocky Mountain spotted fever and rickettsiosis 364D. Previous studies have demonstrated that nonpathogenic endosymbiotic bacteria can interfere with Rickettsia co-infections in other tick species. We hypothesized that within D. occidentalis ticks, interference may exist between different nonpathogenic endosymbiotic or nonendosymbiotic bacteria and Spotted Fever group Rickettsia (SFGR). Using PCR amplification and sequencing of the rompA gene and intergenic region we identified a cohort of SFGR-infected and non-infected D. occidentalis ticks collected from San Diego County. We then amplified a partial segment of the 16S rRNA gene and used next-generation sequencing to elucidate the microbiomes and levels of co-infection in the ticks. The SFGR R. philipii str. 364D and R. rhipicephali were detected in 2.3% and 8.2% of the ticks, respectively, via rompA sequencing. Interestingly, next generation sequencing revealed an inverse relationship between the number of Francisella-like endosymbiont (FLE) 16S rRNA sequences and Rickettsia 16S rRNA sequences within individual ticks that is consistent with partial interference between FLE and SFGR infecting ticks. After excluding the Rickettsia and FLE endosymbionts from the analysis, there was a small but significant difference in microbial community diversity and a pattern of geographic isolation by distance between collection locales. In addition, male ticks had a greater diversity of bacteria than female ticks and ticks that weren't infected with SFGR had similar microbiomes to canine skin microbiomes. Although experimental studies are required for confirmation, our findings are consistent with the hypothesis that FLEs and, to a lesser extent, other bacteria, interfere with the ability of D. occidentalis to be infected with certain SFGR. The results also raise interesting possibilities about the effects of putative vertebrate hosts on the tick microbiome.

Project description:Walking, and in particular, outdoor walking, is the most common form of physical activity for older adults. To date, no study investigated the association between the neighborhood built environment and physical activity habits of older adults of low SES. Thus, our overarching aim was to examine the association between the neighborhood built environment and the spectrum of physical activity and walking for transportation in older adults of low socioeconomic status.Cross-sectional data were from the Walk the Talk Study, collected in 2012. Participants (n?=?161, mean age?=?74 years) were in receipt of a rental subsidy for low income individuals and resided in neighbourhoods across Metro Vancouver, Canada. We used the Street Smart Walk Score to objectively characterize the built environment main effect (walkability), accelerometry for objective physical activity, and the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire to measure walking for transportation. We used regression analyses to examine associations of objectively measured physical activity [total volume, light intensity and moderate intensity physical activity (MVPA)] and self-reported walking for transportation (any, frequency, duration) with walkability. We adjusted analyses for person- and environment-level factors associated with older adult physical activity.Neighbourhood walkability was not associated with physical activity volume or intensity and self-reported walking for transportation, with one exception. Each 10-point increase in Street Smart Walk Score was associated with a 45% greater odds of any walking for transportation (compared with none; OR?=?1.45, 95% confidence interval?=?1.18, 1.78). Sociodemographic, physical function and attitudinal factors were significant predictors of physical activity across our models.The lack of associations between most of the explored outcomes may be due to the complexity of the relation between the person and environment. Given that this is the first study to explore these associations specifically in older adults living on low income, this study should be replicated in other settings.

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Walking for transportation among Latino adults in San Diego County: who meets physical activity guidelines?

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Walking for transportation among Latino adults in San Diego County: who meets physical activity guidelines?

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