Browsing by Author "Vega Salas, María Jesús"

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    Development of an online food frequency questionnaire and estimation of misreporting of energy intake during the COVID-19 pandemic among young adults in Peru
    (Frontiers Media S.A.RONTIERS MEDIA SA, 2022) Vega Salas, María Jesús; Curi-Quinto, Katherine; Hidalgo-Arestegui, Alessandra; Meza-Carbajal, Krysty; Lago-Berrocal, Nataly; Arias, Lena; Favara, Marta; Penny, Mary; Sanchez, Alan; Vimaleswaran, Karani Santhanakrishnan
    Background: The Young Lives longitudinal study switched to remote data collection methods including the adaptation of dietary intake assessment to online modes due to the physical contact restrictions imposed by the COVID-19 pandemic. This study aimed to describe the adaptation process and validation of an online quantitative food frequency questionnaire (FFQ) for Peruvian young adults. Methods: A previously validated face-to-face FFQ for the adult Peruvian population was adapted to be administered through an online self-administered questionnaire using a multi-stage process. Questionnaire development was informed by experts’ opinions and pilot surveys. FFQ validity was assessed by estimating misreporting of energy intake (EI) using the McCrory method, and the FFQ reliability with Cronbach alpha. Logistic regressions were used to examine associations of misreporting with sociodemographic, body mass index (BMI), and physical activity covariates. Results: The FFQ was completed by 426 Peruvian young adults from urban and rural areas, among whom 31% were classified as misreporters, with most of them (16.2%) overreporting daily EI. Men had a lower risk of under-reporting and a higher risk of over-reporting (OR = 0.28 and 1.89). Participants without a higher education degree had a lower risk of under-reporting and a higher risk of over-reporting (OR = 2.18 and 0.36, respectively). No major difference in misreporting was found across age groups, areas, studying as the main activity, being physically active or sedentary, or BMI. Results showed good internal reliability for the overall FFQ (Cronbach alpha = 0.82). Conclusion: Misreporting of EI was mostly explained by education level and sex across participants. Other sociodemographic characteristics, physical activity, sedentary behavior, and BMI did not explain the differences in EI misreporting. The adapted online FFQ proved to be reliable and valid for assessing dietary intakes among Peruvian young adults during the COVID pandemic. Further studies should aim at using and validating innovative dietary intake data collection methods, such as those described, for informing public health policies targeting malnutrition in different contexts after the COVID-19 pandemic.
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    Estigmatización por peso en estudiantes universitarios chilenos
    (Sociedad Chilena de Nutrición Bromatología y Toxicológica, 2024) Vega Salas, María Jesús; Hermosilla Llanca, Danae Aylin; Aviles Peña, Valeria Andrea Irene; Ulloa Vallejos, Camila Ignacia; Espinosa Repenning, Alejandra Andrea
    The rise in obesity prevalence has led to increased weight stigmatization, impacting the psychological and social health of those affected. Weight stigma can manifest in beliefs regarding individuals’ control over their obesity. Few studies have explored the role of weight-based victimization and beliefs towards individuals with obesity. Objective: To analyze the association between weight-based victimization and university students’ characteristics, with beliefs toward individuals with obesity. Methods: Cross-sectional study involving 281 students in Santiago, Chile. Participants completed an online questionnaire including the Beliefs about Obese Persons Scale (BAOP), questions about weight-based discrimination, and personal characteristics. The BAOP scale was validated through cognitive interviews (N=8) and internal consistency analysis (α-Cronbach=0,814). Results were analyzed using U Mann-Whitney, Kruskal-Wallis, and Chi-square tests. Results: Most students believed that obesity is controllable by those affected, but those who reported weight-based victimization in places such as home and university exhibited lower beliefs about the controllability of obesity (p<0,05). No differences in beliefs towards individuals with obesity were reported based on personal characteristics, except among male students in different study cohorts. Conclusion: This study identifies that victims of weight bias tend to exhibit lower beliefs regarding the controllability of obesity. Future interventions should incorporate strategies to reduce weight biases among university students in training.
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    School environments and obesity: a systematic review of interventions and policies among school-age students in Latin America and the Caribbean
    (Springer Nature, 2022) Vega Salas, María Jesús; Murray, Claudia; Nunes, Richard; Hidalgo-Arestegui, Alessandra; Curi-Quinto, Katherine; Penny, Mary E.; Cueto, Santiago; Lovegrove, Julie Anne; Sánchez, Alan; Vimaleswaran, Karani Santhanakrishnan
    Background: The rapid rise in obesity rates among school children in Latin America and the Caribbean (LAC) could have a direct impact on the region’s physical and mental health, disability, and mortality. This review presents the available interventions likely to reduce, mitigate and/or prevent obesity among school children in LAC by modifying the food and built environments within and around schools. Methods: Two independent reviewers searched five databases: MEDLINE, Web of Science, Cochrane Library, Scopus and Latin American and Caribbean Health Sciences Literature for peer-reviewed literature published from 1 January 2000 to September 2021; searching and screening prospective studies published in English, Spanish and Portuguese. This was followed by data extraction and quality assessment using the Cochrane risk-of-bias tool (RoB 2) and the Risk of Bias in Non-Randomized Studies of Interventions (ROBINS-I), adopting also the PRISMA 2020 guidelines. Due to the heterogeneity of the intervention’s characteristics and obesity-related measurements across studies, a narrative synthesis was conducted. Results: A total of 1342 research papers were screened, and 9 studies were included; 4 in Mexico, and 1 each in Argentina, Brazil, Chile, Colombia, and Ecuador. Four studies reported strategies for modifying food provision; four other targeted the built environment, (modifying school premises and providing materials for physical activity); a final study included both food and built environment intervention components. Overall, two studies reported that the intervention was significantly associated with a lower increase over time in BMI/obesity in the intervention against the control group. The remaining studies were non-significant. Conclusions: Data suggest that school environmental interventions, complementing nutritional and physical education can contribute to reduce incremental childhood obesity trends. However, evidence of the extent to which food and built environment components factor into obesogenic environments, within and around school grounds is inconclusive. Insufficient data hindered any urban/rural comparisons. Further school environmental intervention studies to inform policies for preventing/reducing childhood obesity in LAC are needed.