Browsing by Author "Valladares, Macarena"

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    Association of sedentariness and health promoting lifestyles in older adults
    (SOC MEDICA SANTIAGO, 2017) Duran, Samuel; Sanchez, Hugo; Valladares, Macarena; Lopez, Antonio; Valdes Badilla, Pablo; Herrera, Tomas
    Background: Part of having healthy lifestyles should be a regular practice of physical activities. Aim: To evaluate the association between the practice of physical activity and healthy lifestyles in older people. Material and Methods: The Health-Promoting Lifestyle Profile survey was applied to 1688 older people living in the community, aged 72 +/- 7 years (61% women). This survey includes questions about regular physical activity. Results: Twenty four percent of surveyed participants declared to practice physical activities at least three times per week, without gender differences. Sedentariness increased along with age. There was a negative association between low physical activity and healthy lifestyles (odds ratio (OR): 3.2 confidence intervals (CI): 2.3-4.5). There was also an association between sedentariness and low self-realization (OR 2.4 CI: 1.8-3.3), low responsibility with health (OR 1.6 CI: 1.22.1), low concern about nutrition (OR 1.8 CI: 1.4-2.4), low stress management (OR 2.0 CI: 1.5-2.7) and low interpersonal support (OR 2.0 CI: 1.5-2.6). Conclusions: Sedentariness is negatively associated with health promoting lifestyles in this group of older people.
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    Association of the dopamine D2 receptor rs1800497 polymorphism with food addiction, food reinforcement, and eating behavior in Chilean adults
    (2022) Obregon, Ana M.; Oyarce, Karina; Garcia-Robles, Maria A.; Valladares, Macarena; Pettinelli, Paulina; Goldfield, Gary S.
    Purpose The regulation of food intake and body weight involves two interacting systems: (a) The homeostatic system (including biological regulators of hunger and satiety) and (b) the non-homeostatic system, (involving concepts of food reinforcement and food addiction). Studies have established a strong genetic component in eating behavior and obesity. The TaqI A1 polymorphism (rs1800497) has previously been associated with eating behavior, diminished dopamine D2 receptor (DRD2) density, higher body mass, and food reinforcement, but relations to food addiction remain unclear. Aim To evaluate the association between the polymorphism rs1800497 with eating behavior, food reinforcement and food addiction in Chilean adults. Methods This cross-sectional study recruited a convenience sample of 97 obese, 25 overweight and 99 normal-weight adults (18-35 years). Anthropometric measurements were performed by standard procedures. Eating behavior was assessed using the: Yale Food Addiction Scale (YFAS), the Three Factor Eating Behavior Questionnaire and the Food Reinforcement Value Questionnaire (FRVQ). The DRD2 genotype (rs1800497) was determined by taqman assays. Results Twenty-two percentage of the participants met the criteria for food addiction. Food addiction was higher in women than men (26% vs 10.7%) and in obese compared to non-obese (40% vs 6%). There was no relationship between food addiction and DRD2 genotype. However when stratified by sex and nutritional status, obese female carriers of the A1 allele reported greater scores on emotional eating and snack food reinforcement compared to non-carriers. Conclusions The DRD2 polymorphism is associated with some hedonic aspects of eating behavior, namely food reinforcement and emotional eating but not food addiction, and this association may be moderated by sex and obesity status, with obese women who are carriers of this genetic variant at higher risk.
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    Comments to the article: Physical activity and profile of lifestyles promoting health in older Chilean adults Reply
    (2018) Duran, Samuel; Sanchez, Hugo; Valladares, Macarena; Lopez, Antonio; Valdes, Pablo; Herrera, Tomas
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    Reporte de notas de actividad física en Chile: Contribuyendo en una iniciativa global por niños y adolescentes más activos
    (2016) Aguilar-Farías, Nicolás; Cortínez O'Ryan, Andrea; Leppe-Zamora, Jaime; Balboa, Teresa; Cobos, Carolina; Lemus, Nicolás; Valladares, Macarena; Sadarangani, Kabir; Von Oetinger, Astrid; Walbaum, Magdalena; Cristi-Montero, Carlos; CEDEUS (Chile)