Browsing by Author "Alder, Megan L."

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    Differences among physical activity actigraphy algorithms in three chronic illness populations
    (2022) Alder, Megan L.; Still, Carolyn H.; Wierenga, Kelly L.; Pignatiello, Grant A.; Moore, Shirley M.
    Objectives: In three chronic illness populations and in a combined sample, we assessed differences in two algorithms to determine wear time (WT%) and four algorithms to determine: Kilocalories, light physical activity (PA), moderate-to-vigorous PA (MVPA), and metabolic equivalents (METs). Methods: Data were collected from 29 people living with HIV (PLHIV), 27 participants recovering from a cardiac event, and 15 participants with hypertension (HTN). Participants wore the ActiGraphTM wGT3X-BT for > 3 days on their hip. Analysis of variance (ANOVA) was used to assess differences among the algorithms. Results: No differences were found between the two algorithms to assess WT% or among the four algorithms to assess kilocalories in each of the chronic illness populations or in the combined sample. Significant differences were found among the four algorithms for light PA (p < .001) and METs (p < .001) in each chronic illness population and in the combined sample. MVPA was significantly different among the four algorithms in the PLHIV (p=.007) and in the combined sample (p < .001), but not in the cardiac (p=.064) or HTN samples (p=.200). Discussion: Our findings indicate that the choice of algorithm does make a difference in PA determination. Differences in algorithms should be considered when comparing PA across different chronic illness populations.
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    Feasibility of an emotion regulation intervention for patients in cardiac rehabilitation
    (2021) Wierenga, Kelly L.; Fresco, David M.; Alder, Megan L.; Moore, Shirley M.
    Cardiac rehabilitation is important to improve physical activity and reduce cardiovascular disease risk factors among people who have experienced a major cardiac event. However, poor emotion regulation can make it difficult to change cardiovascular risk factors. The purpose of this paper was to assess the feasibility of the Regulating Emotions to improve Nutrition Exercise and reduce Stress (RENEwS) intervention, an education program aimed at improving emotion regulation strategies among patients in cardiac rehabilitation. Fourteen cardiac rehabilitation patients (mean age 61 years) enrolled in 5 weekly RENEwS sessions. Qualitative analysis of participants’ comments was used to assess eight elements of feasibility. Fifty-seven percent of participants completed the intervention. Participants thought the intervention was feasible, with strengths in the areas of acceptability, demand, adaptation, integration, and implementation. Other comments regarding practicality, expansion, and perceived efficacy provide guidance for intervention refinement.
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    Preliminary Efficacy of an Emotion Regulation Intervention on Physical Activity and Depressive and Anxious Symptoms in Individuals in Cardiac Rehabilitation
    (2022-05) Wierenga, Kelly L.; Fresco, David M.; Alder, Megan L.; Sattar, Abdus; Moore, Shirley M.
    Background: For the 720 000 Americans expected to experience a new acute cardiac event this year, cardiac rehabilitation is an important part of recovery. Symptoms of depression and anxiety undermine recovery efforts, leaving recovering patients at risk for diminished functional capacity and heightened risk of mortality. Poor emotion regulation can worsen symptoms of depression and anxiety and hinder recovery efforts. Objective: The purpose of this randomized controlled trial was to evaluate the early efficacy testing of a theoretically based emotion regulation treatment (Regulating Emotions to Improve Self-management of Nutrition, Exercise, and Stress [RENEwS]) designed to assist survivors of an acute cardiac event in cardiac rehabilitation to optimize recovery. Methods: Survivors of an acute cardiac event in cardiac rehabilitation (n = 30, 83% men) were randomized to five 1-hour in-person group sessions of RENEwS or a phone-based attention-control group. Participants completed measures of depression and anxiety symptoms at 3 time points. Moderate to vigorous physical activity (MVPA) was objectively measured for 7 days at each time point using waist-worn actigraphy monitors. Between-group differences were calculated using analysis of variance with Cohen f effect sizes calculated to evaluate initial efficacy. Results: There was no statistically significant difference in depression, anxiety, or MVPA over time based on group assignment (all P > .05). Compared with attention control participants, in RENEwS participants, preliminary effects showed greater reductions in depression (Cohen f = 0.34) and anxiety (Cohen f = 0.40) symptoms but only modest improvements in MVPA from baseline to 5 months (Cohen f = 0.08). Conclusions: Findings show that RENEwS is a promising emotion regulation intervention to enhance cardiac rehabilitation and potentially decrease symptoms of depression and anxiety.