Publications by authors named "Colleen Keller"

This article reports the results of Smart Walk: a randomized pilot trial of an 8-month culturally tailored, smartphone-delivered physical activity (PA) intervention for African American women with obesity. Sixty participants (age range = 24−49 years; BMI range = 30−58 kg/m2) were randomized to the Smart Walk intervention (n = 30) or a wellness comparison intervention (n = 30). Results supported the acceptability and feasibility of the intervention, as demonstrated by participant retention (85% at 4 months and 78% at 8 months), Smart Walk app use, and intervention satisfaction (i.

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Background: Low moderate-to-vigorous physical activity (MVPA) levels and obesity are associated with increased cardiometabolic disease risk.

Objective: The aim of this study was to describe MVPA and cardiometabolic risk characteristics of insufficiently active African American women with obesity (N = 60) enrolled in a culturally tailored MVPA intervention.

Methods: We assessed accelerometer-measured and self-reported MVPA, blood pressure, serum lipid profiles, cardiorespiratory fitness (VO 2 peak), and aortic pulse wave velocity.

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Purpose: This study tested self-efficacy and social support for activity and dietary changes as mediators of changes in type 2 diabetes related outcomes following a lifestyle intervention among Latino youth.

Setting And Intervention: Latino adolescents (14-16 years) with obesity (BMI% = 98.1 ± 1.

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Background: Regular aerobic physical activity (PA) is an important component of healthy aging. However, only 27%-40% of African American women achieve national PA guidelines. Available data also show a clear decline in PA as African American women transition from young adulthood (ie, 25-44 years) into midlife.

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Background/aims: Prediabetes and diabetes disproportionately impact Latino youth, yet few diabetes prevention programs have prioritized inclusion of this underrepresented population. This report describes the recruitment process, yields, associated costs, and phenotypic characteristics of Latino youth with obesity and prediabetes enrolled in a randomized controlled diabetes prevention study in the USA.

Methods: Recruitment efforts included referrals from clinics, community outlets, local media, and word of mouth with the goal of enrolling 120 Latino adolescents aged 12-16 with obesity (BMI > 95th percentile) and prediabetes.

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Objective: Obesity is a critical public health condition affecting Latinx adolescents and contributes to health disparities across the lifespan. Childhood and adolescent obesity is associated with reduced quality of life (QoL) and decreased self-esteem. The purpose of this study is to examine the role of cultural (e.

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Background: Smart Walk is a culturally relevant, social cognitive theory-based, smartphone-delivered intervention designed to increase physical activity (PA) and reduce cardiometabolic disease risk among African American (AA) women.

Objective: This study aimed to describe the development and initial usability testing results of Smart Walk.

Methods: Smart Walk was developed in 5 phases.

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Background: Body composition differences between males and females emerge during adolescence and continue throughout adulthood; however, whether sex moderates body composition changes in adolescents with obesity after an intervention is unknown.

Objective: To examine sex as a moderator of changes in adiposity following lifestyle intervention.

Methods: A total of 136 Latino youth with obesity (BMI% 98.

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Background: African American (AA) women perform low levels of physical activity (PA) and are disproportionally burdened by cardiometabolic disease conditions when compared to White women and the U.S. population as a whole.

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Objective: This study examined the short- and long-term effects of a community-based lifestyle intervention among Latino youth with obesity.

Methods: Latino adolescents (14-16 years old) were randomized to a 3-month lifestyle intervention (n = 67) or comparison control (n = 69) and followed for 12 months. The intervention included weekly nutrition and health classes delivered to groups of families and exercise sessions (3 days/week) delivered to groups of adolescents.

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Background: Obese youth with prediabetes are at increased risk for premature morbidity and mortality through multiple mechanisms, including increased systemic inflammation. GlycA is a novel measure of systemic inflammation that predicts type II diabetes, cardiovascular events, and all-cause mortality in adults.

Objective: The purpose of the present study was to examine changes in GlycA after lifestyle intervention among obese, prediabetic Latino youth.

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This systematic review was to identify and synthesize literature that described the cultural appropriateness and effectiveness of interventions aimed at cardiovascular risk reduction in Korean Americans. We searched multiple electronic databases for studies published between January 2000 and August 2017 and identified 14 eligible research reports. All reviewed studies targeted first-generation Korean American adults.

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Background: African American (AA) women face unique sociocultural barriers to physical activity (PA) engagement. Such barriers may contribute to their low PA levels and high cardiometabolic disease burden. One particular barrier reported among AA women in recent research is that being physically active can have an undesirable effect on the hairstyles and hair maintenance of many AA women.

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Food rituals often abruptly change when Hispanic families migrate to the United States. This report describes changes in rituals of food procurement, preparation, and presentation (food-PPP) in Hispanic women following migration to the United States. Focus groups and face-to-face interviews were conducted with 13 low-income, overweight/obese Hispanic women 27 to 40 years of age.

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Objective: Limited research has examined how aspects of religion and spirituality can be incorporated into community-based physical activity programs delivered outside of religious institutions. The purpose of this study was to qualitatively explore how spirituality and religion can be leveraged in the design of community-based physical activity programs for African American women delivered outside of faith-based or faith-placed settings.

Results: Three focus groups were conducted were conducted with 23 African American women (M age = 37.

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To eliminate health disparities in the United States, identifying cultural contexts salient to the target populations in an intervention study is critical; however, little research has been conducted on the identification of cultural contexts among Korean Americans who have significant risk factors for chronic diseases. This systematic review identifies critical cultural contexts central to the literature discussed in health research on Korean Americans. We examined 14 research reports of 801 potentially eligible articles published between 2000 and 2016 and analyzed their contribution to cultural contexts among Korean Americans based on the PEN-3 model.

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Objective: We examined the cultural relevance of Social Cognitive Theory (SCT) in the design of a physical activity intervention for African-American women.

Methods: A qualitative study design was used. Twenty-five African-American women (Mean age = 38.

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Background: Despite Korean Americans being one of the fastest growing immigrant groups in the United States, little is known about their cardiovascular health or cardiovascular disease risk factors.

Purpose: The purpose of this report is to describe the prevalence of cardiovascular disease risks and their contributing factors in Korean Americans and recommend future directions for the development of cardiovascular disease prevention or management research to meet the unique needs of this ethnic group.

Methods: We conducted a systematic review using databases of PubMed, CINAHL, PsycINFO, Web of Science, and the Cochrane Database of Systematic Reviews and identified 27 studies that reported the prevalence of cardiovascular disease or its risk factors in Korean Americans, published in English between 2000 and 2016.

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This report evaluates the relationship between acculturation and assimilation with the physical activity (PA) outcomes of a 12-month walking intervention for postpartum Latinas ( n = 81, M age = 29.2 years, M BMI [body mass index] = 30.0).

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Background: Obese Latino adolescents are disproportionately impacted by insulin resistance and type 2 diabetes. Prediabetes is an intermediate stage in the pathogenesis of type 2 diabetes and represents a critical opportunity for intervention. However, to date, no diabetes prevention studies have been conducted in obese Latino youth with prediabetes, a highly vulnerable and underserved group.

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Background: Type 2 diabetes (T2D) disproportionately impacts Latino youth yet few diabetes prevention programs address this important source of health disparities.

Objectives: To address this knowledge gap, we describe the rationale, design, and methodology underpinning a culturally-grounded T2D prevention program for obese Latino youth. The study aims to: 1) to test the efficacy of the intervention for reducing T2D risk, 2) explore potential mediators and moderators of changes in health behaviors and health outcomes and, 3) examine the incremental cost-effectiveness for reducing T2D risk.

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Limited research has focused on recruitment strategies for health promotion researchers conducting small-scale pilot studies. Such research is important because small studies often have limited funding streams and personnel resources. Accordingly, many techniques implemented by large-scale studies are of limited use to smaller research projects.

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Latina adults in the United States have a disproportionately higher prevalence of chronic diseases related to low physical activity levels than non-Hispanic women. Literature indicates that acculturation may be a contributing factor to being physically active, but the extent of this association remains unclear. An integrative review of literature was conducted on studies that examined acculturation as it relates to physical activity in Latinas in the United States.

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Background: African-American women perform low levels of physical activity and are disproportionally burdened by associated cardiometabolic disease conditions (i.e., 57 % are obese, 49 % have cardiovascular disease).

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