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Orta, Olivia R

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Orta

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Olivia R

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Orta, Olivia R

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Author's Publications: search.filters.isAuthorOfPublication.ab32b5c9-68d2-4ffb-b3de-a08fbfd16276

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    Genotype vs. Phenotype and the Rise of Non-Communicable Diseases: The Importance of Lifestyle Behaviors During Childhood
    (Cureus, 2016) Wu, Brian W; Skidmore, Paula M; Orta, Olivia R; Faulkner, James; Lambrick, Danielle; Signal, Leigh; Williams, Michelle; Stoner, Lee
    Despite continued research and growing public awareness, the incidence of non-communicable diseases (NCD) continues to accelerate. While a person may have a genetic predisposition to certain NCDs, the rapidly changing epidemiology of NCDs points to the importance of environmental, social, and behavioural determinants of health. Specifically, three lifestyle behaviours expose children to important environmental cues and stressors: physical activity, nutritional intake, and sleep behaviour. Failure to expose children to proper gene-environment interactions, through the aforementioned lifestyle behaviours, can and will predispose children to the development of NCDs. Reengineering the environments of children can induce a paradigm shift, from a predominantly biomedical health model of treating symptomology, to a more holistic model based on encouraging appropriate behavioral decisions and optimal health.
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    Associations of self-reported and objectively measured sleep disturbances with depression among primary caregivers of children with disabilities
    (Dove Medical Press, 2016) Orta, Olivia R; Barbosa, Clarita; Velez, Juan Carlos; Gelaye, Bizu; Chen, Xiaoli; Stoner, Lee; Williams, Michelle
    Objective: The objective of this study was to determine the association between sleep and depression using both self-reported (subjective) and actigraphic (objective) sleep traits. Methods: A cross-sectional study was conducted among 175 female primary caregivers of children with disabilities receiving care at a rehabilitation center in Punta Arenas, Chile. The eight-item Patient Health Questionnaire was used to ascertain participants’ depression status. The Pittsburgh Sleep Quality Index was used to define subjective, or perceived, sleep quality. Wrist-worn actigraph monitors, worn for seven consecutive nights, were used to characterize objective sleep quality and disturbances. Interviewer-administered questionnaires were used to collect information on sociodemographic and lifestyle factors. Linear regression models were fit using continuous sleep parameters as the dependent variables and depression status as the independent variable. Multivariable models were adjusted for body mass index, marital status, smoking status, education level, and children’s disabilities. Results: Using an eight-item Patient Health Questionnaire score ≥10, 26.3% of participants presented with depression. Depressed women were more likely to self-report overall poorer (subjective) sleep compared to non-depressed women; however, differences in sleep were not consistently noted using actigraphic (objective) sleep traits. Among the depressed, both sleep duration and total time in bed were significantly underestimated. In multivariable models, depression was negatively associated with sleep duration using both subjective (β=−0.71, standard error [SE] =0.25; P=0.006) and objective sleep (β=−0.42, SE =0.19; P=0.026). Conclusion: The association between sleep and depression differed comparing subjective and objective methods of assessment. Research strategies allowing for the integration of both perceived and objective measures of sleep traits are encouraged.