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  • Author: Caroline de Oliveira Martins x
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Kelly Samara Silva, Daniel Giordani Vasques, Caroline de Oliveira Martins, Laura Ashley Williams and Adair S. Lopes


Research has demonstrated that adolescents who actively commute have higher levels of physical activity (PA), which have declined precipitously over the past 30 years. The purpose of this study was to describe the prevalence of active commuting to school; and to identify barriers associated with active commuting.


A cross-sectional study was conducted with 1672 students (46.8% boys and 53.2% girls) from 11 to 17 years of age in Caxias do Sul/RS, Brazil. The students were asked to answer questionnaires about active transport, PA, and sedentary behaviors. They also completed a cardiovascular fitness test and body composition measurements. The study used a multivariate Poisson regression analysis.


A total of 62.5% of students were observed to actively commute and the prevalence ratio (PR) of not actively commuting was associated with the type of school (Private: 2.41; 1.47, 3.95) and the time spent on commuting (>20 min: 1.93; 1.23, 3.03). The associated barriers to passive commuting were distance (3.02; 1.95, 4.71), crime/ danger (2.65; 1.82, 3.85), and traffic (1.75; 1.19, 2.58).


This study showed that environmental variables were strongly associated with active commuting. However, no alterations in body composition or other behavioral variables were observed after adjustment.

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André Luiz Galvim, Isabela Martins Oliveira, Tatiane Vieira Martins, Leonardo Moreira Vieira, Natália Caroline Cerri, Natália Oiring de Castro Cezar, Renata Valle Pedroso and Grace Angélica de Oliveira Gomes

Background: One of the most important health determinants is social vulnerability, which can interfere in the practice of physical activity (PA). This study aimed at analyzing adherence to a PA program in a high social vulnerability context. Methods: A longitudinal study with a 6-month intervention period was conducted. The program offered monitored walks associated with behavioral change educational campaigns. Sociodemographic characteristics, occupation, PA level, noncommunicable chronic diseases, participants’ frequency of participation in the program, and intervention dropout reasons were evaluated. Descriptive and survival analyses were accomplished. Results: Among the 106 participants, 88.0% were female and 21.7% were older adults. The most mentioned participation reasons were health improvement (23.0%), weight loss (19.0%), disease control (17.0%), and social living (12%). The mean frequency of participation in the program was 27.4%. Dropout rate was 52.7%. The main reported reasons for dropping out were work hours (27.8%), health problems (25.9%), personal reasons (22.2%), and lack of time (11.1%). Factors associated with remaining in the program were being older adults and presenting body mass index <25 kg/m2. Conclusions: Results showed that in a high social vulnerability context, adherence to PA programs is low, and adult-life-related commitments and high levels of obesity are factors associated with lower adherence.