- Obesity, Physical Activity, Diet
- Behavioral Health and Interventions
- Physical Activity and Health
- Digital Mental Health Interventions
- Health and Medical Research Impacts
- Impact of Technology on Adolescents
- Eating Disorders and Behaviors
- Telemedicine and Telehealth Implementation
- Health and Lifestyle Studies
- COVID-19 and Mental Health
- Health Sciences Research and Education
- Mobile Health and mHealth Applications
- Family and Disability Support Research
- Mental Health Research Topics
- Autism Spectrum Disorder Research
- Motivation and Self-Concept in Sports
- Health Policy Implementation Science
- Mental Health Treatment and Access
- School Health and Nursing Education
- Health disparities and outcomes
- Mental Health and Patient Involvement
- Biomedical and Engineering Education
- Youth Development and Social Support
- Functional Brain Connectivity Studies
- Meta-analysis and systematic reviews
University of California, Irvine
2015-2025
Wilfrid Laurier University
2023-2024
University of California, San Diego
2021
University of California, San Francisco
2021
Deutsche Gesellschaft für Information und Wissen
2021
Deutsche Gesellschaft für Ernährung
2021
Southern California Clinical and Translational Science Institute
2018
Grupo Hospitalar Conceição
2018
University of Nevada, Las Vegas
2013
Baylor College of Medicine
2013
How a chronic environmental stressor can interfere with the buffering effects of social support by eroding was analyzed in this prospective, longitudinal study. A classic effect found after 2 months exposure to stressor, household crowding. Crowded residents low perceived had greater increases psychological distress than did crowded high support. However, 8 disappeared. Moreover, crowding become directly associated lower support, which turn distress. All analyses controlled for prior Under...
Many adolescents do not meet public health recommendations for moderate-to-vigorous physical activity (MVPA). In studies of variables influencing adolescent MVPA, one that has been understudied is the affective response to exercise. We hypothesized with a more positive acute exercise would be active. Adolescents ( N = 124; 46% male) completed two 30-min tasks (above and below ventilatory threshold [VT]), wore ActiGraph accelerometers 6.5 ± 0.7 days. Affective valence was assessed before,...
Background Accompanying the rising rates of reported mental distress during COVID-19 pandemic has been a increase in use digital technologies to manage health generally, and more specifically. Objective The objective this study was systematically examine whether there pandemic–related self-reported tools other health. Methods We analyzed results from survey 5907 individuals United States using Amazon Mechanical Turk (MTurk); administered 4 week-long periods 2020 respondents were all 50...
Abstract Objective: In the context of growing public health concern with obesity rates among children and adolescents, much attention has focused on role television as a contributor to problem. Less been devoted interactive media (internet surfing video games), despite fact that these forms entertainment are fast gaining in popularity youth. This study investigated relative associations TV viewing use body fat BMI, controlling for both physical activity participation cardiovascular fitness....
Purpose: Evidence shows that aspects of personality are associated with participation in physical activity. We hypothesized that, among adolescents, behavioral activation (BAS) and inhibition (BIS) systems would be fitness (cardiovascular percent body fat), enjoyment exercise, tolerance persistence high-intensity affective response to an acute exercise bout. Methods: One hundred forty-six healthy adolescents completed a cardiovascular test, fat assessment (dual-energy x-ray absorptiometer),...
Physical inactivity across the lifespan remains a public health issue for many developed countries. Inactivity has contributed considerably to pervasiveness of lifestyle diseases. Government, national and local agencies organizations have been unable systematically, in coordinated way, translate behavioral research into practice that makes difference at population level. One approach mobilizing multi-level efforts improve environment physical activity is engage process citizen science....
The widespread availability of affordable consumer-oriented devices for monitoring physical activity offers an appealing option to researchers, but studies are needed demonstrate the validity and reliability these products. To examine Fitbit Zip, we recruited three cohorts (N's = 25, 35, 27) middle-school students wear ActiGraph simultaneously a week. Adolescents were healthy volunteers representing range levels. Mean daily minutes MVPA mean steps per day compared between Zip Actigraph.The...
Mental health concerns are a significant issue among community college students, who often have less access to resources than traditional university students. Mobile apps the potential increase mental care, but there has been little research investigating factors associated with app use within population.This study aimed understand facilitators of and barriers students.A web-based survey was administered randomly selected sample 500 students from April 16 June 30, 2020. Structural equation...
Purpose: Physical inactivity is deleterious to health, but it has been difficult determine the extent which these effects are attributable abnormal body composition or factors related physical activity alone. To begin gauge independent of on health risk, we matched by BMI two groups normal-weight adolescent females, one physically active (all participants in high school sports), and sedentary. Methods: Thirty-seven sedentary 37 females (mean 15.5 yr) were for age percentile = 58.8)....
Research examined the effects of a supervised physical activity program on potential psychosocial mediators and determined whether changes in these variables predicted fitness. Sedentary adolescent females were assigned to an intervention (n = 79) or comparison 67) group. Cardiovascular fitness (cycle ergometer), (3-Day Physical Activity Recall), related (i.e., self-efficacy, perceived barriers, social support, enjoyment) assessed at three time points over 9-month study. An...
A school-based physical activity intervention designed to encourage adolescent girls be more active was effective for some participants than others. We examined whether baseline enjoyment of exercise moderated response the intervention. Adolescent with a low level who participated in controlled trial an promote increased participation (n = 122) self-reported their and at baseline, mid-way through intervention, end 9-month period. At all three time points, also underwent assessments...
Process evaluation is an assessment of the implementation intervention. A process component was embedded in HEALTHY study, a primary prevention trial for Type 2 diabetes implemented over 3 years 21 middle schools across United States. The physical education (PE) intervention aimed at maximizing student engagement moderate-to-vigorous activity through delivery structured lesson plans by PE teachers. data collected via class observations and interventionist interviews assessed fidelity, dose...
Digital mental health interventions (DMHIs) represent a promising solution to address the growing unmet needs and increase access care. Integrating DMHIs into clinical community settings is challenging complex. Frameworks that explore wide range of factors, such as Exploration, Preparation, Implementation, Sustainment (EPIS) framework, can be useful for examining multilevel factors related DMHI implementation efforts.This paper aimed identify barriers to, facilitators of, best practice...
Calls for communitywide interventions to promote bicycle safety helmet usage among children abound, yet little is known about the factors that cause parents purchase helmets and consistently insist on their usage. The health belief model proposes cues action are important influences self-protective behaviors. A field study was conducted test effectiveness of six different kinds action. Parents between ages 5 18 were selected via random-digit-dialing techniques participation in study. results...
Cross-sectional research examined whether physical activity or fitness was more closely linked to self-concept in adolescent females ages 14 17 ( N = 103, 63% Caucasian). Moderate and vigorous were measured through a 3-day recall. Physical assessed using highly accurate measures of peak oxygen consumption (via cycle ergometer) percent body fat dual X-ray absorptiometer). The Self-Description Questionnaire (PSDQ) 11 domains (e.g., health, endurance, appearance). Pearson’s correlations showed...
Many female adolescents participate in insufficient physical activity to maintain cardiovascular fitness and promote optimal bone growth. This study evaluates the impact of a school-based intervention on fitness, activity, among adolescent females.Subjects were assigned an (n = 63) or comparison 59) group, underwent assessments (VO2peak), body composition, mineral density (BMD), content (BMC), serum markers turnover at baseline end each two school semesters.The increased VO2peak, BMC for...
As concern about youth obesity continues to mount, there is increasing consideration of widespread policy changes support improved nutritional and enhanced physical activity offerings in schools. A critical element the success such programs may be involve students as spokespeople for program. Making a public commitment healthy lifestyle program targets (improved nutrition activity) potentiate behavior among provide model their peers. This paper examines whether student's "public...