Peter R. Giacobbi

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BACKGROUND Using peer volunteers as delivery agents may improve translation of evidence-based physical activity promotion programs for older adults. This study examined whether tailored support from older peer volunteers could improve initiation and long-term maintenance of physical activity behavior. METHODS Participants were randomized to 2 16-week,(More)
Research examining exercising in pregnancy is limited by non-theoretical and cross-sectional assessments that fail to capture the specific physical and psychological demands of the pregnancy trimesters. Drawing on a population in Gainesville, Florida, USA we prospectively examined, within a multilevel design, 61 pregnant women's first and second trimester(More)
Exercise behaviour and sleep are both important health indicators that demonstrate significant decreases with age, and remain modifiable well into later life. The current investigation examined both the chronic and acute relationships between exercise behaviour and self-reported sleep in older adults through a secondary analysis of a clinical trial of a(More)
OBJECTIVE Despite the well-established health benefits of physical activity, the role of exercise for eating disorders (ED) is controversial; thus dictating a need for a better understanding of the mechanisms of exercise and ED. The purpose of our study was to examine a conceptual model that hypothesizes regular exercise without psychological compulsion(More)
Imagery interventions intended to increase exercise behavior are rare. The Active Adult Mentoring Program (AAMP) was a randomized controlled trial with imagery content. The purposes of this study were to examine the content and perceived utility of mental imagery with 24 AAMP participants (Mage = 65.00, SD = 8.79 years). Digital recordings of AAMP sessions(More)
The present study examined links between physical activity and quality of life experienced by individuals with physical disabilities recruited from a wheelchair user's basketball tournament. The participants included 12 male and 14 female adults between the ages of 18-54 (M=31.12, SD=10.75) who all reported one or more condition(s) that impacted their daily(More)
PURPOSE To identify gaps in assistive technology (AT) research and solutions, with a focus on wheeled mobility. METHODS Literature review. RESULTS AT researchers have identified a need to move beyond determining whether a device works well in the laboratory or is perceived favorably by users. The vital next step in AT research is to determine the(More)
Efficacious interventions to promote long-term maintenance of physical activity are not well understood. Engineers have developed methods to create dynamical system models for modeling idiographic (i.e., within-person) relationships within systems. In behavioral research, dynamical systems modeling may assist in decomposing intervention effects and(More)
OBJECTIVE To evaluate the impact of power assist wheels on the distance traveled by manual wheelchair users and analyze potential cofactors in the magnitude of response and to test the hypothesis that wheelers would travel significantly further with power assist wheels. DESIGN A 16-wk A (Preintervention)-B (Intervention)-A (Postintervention) repeated(More)
OBJECTIVES To identify intervention components that may promote longterm changes of physical activity among older adults in a behavioral theory-based physical activity trial. METHODS Participants (N = 24; aged 65 ± 8.79 years) shared perceptions of intervention components at the end of the intervention and physical activity was assessed at 18 months.(More)