Medicine and Health Sciences Commons^™

Sedentary Bout Patterns And Metabolic Health In The Hispanic Community Health Study/Study Of Latino Youth (Sol Youth)., Jordan A. Carlson, Paul R. Hibbing, Bethany Forseth, Keith M. Diaz, Daniela Sotres-Alvarez, Carolina M. Bejarano, Andrea T. Duran, Sheila F. Castañeda, Melawhy L. Garcia, Krista M. Perreira, Martha L. Daviglus, Linda Van Horn, Marc D. Gellman, Carmen R. Isasi, Jianwen Cai, Alan M. Delamater, Vincent S. Staggs, John Thyfault, Linda C. Gallo

Manuscripts, Articles, Book Chapters and Other Papers

Background There is limited evidence on the potential negative metabolic health impacts of prolonged and uninterrupted sedentary bouts in structurally disadvantaged youth. This study investigated associations between sedentary bout variables and metabolic health markers in the Hispanic Community Health Study/SOL Youth (Study of Latino Youth). Methods and Results SOL Youth was a population-based cohort of 1466 youth (age range, 8-16 years; 48.5% female); 957 youth were included in the analytic sample based on complete data. Accelerometers measured moderate-to-vigorous physical activity (MVPA), total sedentary time, and sedentary bout patterns (daily time spent in sedentary bouts ≥30 minutes, median sedentary bout duration, …

Chap-Child: An Open Source Method For Estimating Sit-To-Stand Transitions And Sedentary Bout Patterns From Hip Accelerometers Among Children., Jordan A. Carlson, Nicola D. Ridgers, Supun Nakandala, Rong Zablocki, Fatima Tuz-Zahra, John Bellettiere, Paul R Hibbing, Chelsea Steel, Marta M. Jankowska, Dori E. Rosenberg, Mikael Anne Greenwood-Hickman, Jingjing Zou, Andrea Z. Lacroix, Arun Kumar, Loki Natarajan

Manuscripts, Articles, Book Chapters and Other Papers

Background: Hip-worn accelerometer cut-points have poor validity for assessing children's sedentary time, which may partly explain the equivocal health associations shown in prior research. Improved processing/classification methods for these monitors would enrich the evidence base and inform the development of more effective public health guidelines. The present study aimed to develop and evaluate a novel computational method (CHAP-child) for classifying sedentary time from hip-worn accelerometer data.

Methods: Participants were 278, 8-11-year-olds recruited from nine primary schools in Melbourne, Australia with differing socioeconomic status. Participants concurrently wore a thigh-worn activPAL (ground truth) and hip-worn ActiGraph (test measure) during up to 4 …

Decreased Physical Activity Among Youth Resulting From Covid-19 Pandemic-Related School Closures: Natural Experimental Study., Amanda Grimes, Joseph S. Lightner, Katlyn Eighmy, Chelsea Steel, Robin P. Shook, Jordan A. Carlson

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: The COVID-19 pandemic has resulted in the closure of schools and may have inadvertently resulted in decreased physical activity for youth. Emerging evidence suggests that school closures due to the COVID-19 pandemic could have hastened the inactivity of youth, possibly due to a lack of structure outside of school and increased access to sedentary activities.

OBJECTIVE: The purpose of this study was to assess changes in physical activity from pre-school closure (before the pandemic) to post-school closure (during the pandemic) among youth in spring 2020.

METHODS: This study used a natural experimental design; youth were enrolled in a physical …

A Prospective Observational Study Of Antihemophilic Factor (Recombinant) Prophylaxis Related To Physical Activity Levels In Patients With Hemophilia A In The United States (Space)., Barbara A. Konkle, Doris V. Quon, Leslie Raffini, Michael Recht, Vlad C. Radulescu, Shannon L. Carpenter, Amy L. Dunn, Mei Lu, Maureen Watt

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Introduction: High collision-risk physical activity can increase bleeding risk in people with hemophilia A, as can increasing the time between factor VIII (FVIII) administration and physical activity. FVIII prophylaxis may be tailored to planned activities to prevent activity-related bleeding.

Aim: To explore the relationship between physical activity levels, FVIII infusion timing, and occurrence of bleeding in patients with severe/moderately severe hemophilia A without FVIII inhibitors receiving antihemophilic factor (recombinant) (rAHF; ADVATE®; Baxalta US Inc., a Takeda company, Lexington, MA, USA).

Methods: SPACE was a 6-month, prospective, multicenter, observational outcomes study (NCT02190149). Enrolled patients received an eDiary application and …

Differences In Adolescent Activity And Dietary Behaviors Across Home, School, And Other Locations Warrant Location-Specific Intervention Approaches., Adrian Ortega, Carolina M. Bejarano, Christopher C. Cushing, Vincent S. Staggs, Amy Papa, Chelsea Steel, Robin P. Shook, Debra K. Sullivan, Sarah C. Couch, Terry L. Conway, Brian E. Saelens, Karen Glanz, Lawrence D. Frank, Kelli L. Cain, Jacqueline Kerr, Jasper Schipperijn, James F Sallis, Jordan A. Carlson

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Investigation of physical activity and dietary behaviors across locations can inform "setting-specific" health behavior interventions and improve understanding of contextual vulnerabilities to poor health. This study examined how physical activity, sedentary time, and dietary behaviors differed across home, school, and other locations in young adolescents.

METHODS: Participants were adolescents aged 12-16 years from the Baltimore-Washington, DC and the Seattle areas from a larger cross-sectional study. Participants (n = 472) wore an accelerometer and Global Positioning Systems (GPS) tracker (Mean days = 5.12, SD = 1.62) to collect location-based physical activity and sedentary data. Participants (n = 789) completed 24-h …

The Promotion Of Physical Activity For The Prevention Of Alzheimer's Disease In Adults With Down Syndrome: Rationale And Design For A 12 Month Randomized Trial., Lauren T. Ptomey, Amanda N. Szabo-Reed, Laura E. Martin, Matthew S. Mayo, Richard A. Washburn, Anna M. Gorczyca, Rebecca J. Lepping, Phill Lee, Daniel Forsha, Joseph R. Sherman, Jessica C. Danon, Joseph E. Donnelly

Manuscripts, Articles, Book Chapters and Other Papers

Nearly all individuals with Down Syndrome (DS) display pathology associated with Alzheimer's disease (AD) beginning as early as age 30. Previous research in typically developed adults suggests that increased moderate-to-vigorous physical activity (MVPA) may improve cognitive function and protect against age-related structural and functional changes in the brain; however, the potential impact of increased MVPA on the development of AD in adults with DS has not been evaluated. Despite the potential positive impact of MVPA on cognition and AD risk, participation in MVPA among young adults with DS is low. The limited research evaluating strategies for increasing MVPA in adults …

Walking Mediates Associations Between Neighborhood Activity Supportiveness And Bmi In The Women's Health Initiative San Diego Cohort., Jordan A. Carlson, Rosemay A. Remigio-Baker, Cheryl A M Anderson, Marc A. Adams, Gregory J. Norman, Jacqueline Kerr, Michael H. Criqui, Matthew Allison

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVES: To investigate whether walking mediates neighborhood built environment associations with weight status in middle- and older-aged women.

METHODS: Participants (N=5085; mean age=64 ± 7.7; 75.4% White non-Hispanic) were from the Women's Health Initiative San Diego cohort baseline visits. Body mass index (BMI) and waist circumference were measured objectively. Walking was assessed via survey. The geographic information system (GIS)-based home neighborhood activity supportiveness index included residential density, street connectivity, land use mix, and number of parks.

RESULTS: BMI was 0.22 units higher and the odds ratio for being obese (vs. normal or overweight) was 8% higher for every standard deviation …

Dog Walking Among Adolescents: Correlates And Contribution To Physical Activity., Jessa K. Engelberg, Jordan A. Carlson, Terry L. Conway, Kelli L. Cain, Brian E. Saelens, Karen Glanz, Lawrence D. Frank, James F. Sallis

Manuscripts, Articles, Book Chapters and Other Papers

PURPOSE: To assess the association of dog walking with adolescents' moderate-to-vigorous physical activity (MVPA) and body mass index (BMI), and identify correlates of dog walking.

METHODS/DESIGN: Participants were 12-17year-olds (n=925) from the Baltimore, MD and Seattle, WA regions. Differences in accelerometer-assessed minutes/day of MVPA and self-reported BMI (percentile) were compared among adolescents (1) without a dog (n=441) and those with a dog who (2) did (≥1days/week, n=300) or (3) did not (n=184) walk it. Correlates of (1) dog walking (any vs. none) among adolescents with dogs (n=484), and (2) days/week of dog walking among dog walkers (n=300) were investigated. Potential …

Comparison Of Affect And Cardiorespiratory Training Responses Between Structured Gym Activities And Traditional Aerobic Exercise In Children., David A. White, S D. Rothenberger, L A. Hunt, F L. Goss

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Physical activities (PA) that are pleasurable are likely to be repeated. Structured gym activities (SGA) are defined as dodging, chasing, and fleeing games. Traditional aerobic exercises (TAE) are defined as treadmill, cycle ergometer, and elliptical exercise. The purpose of this investigation was to compare affect and cardiorespiratory training responses between SGA and TAE in children. Thirty-two participants (9.3±0.2) were randomized to either the SGA or TAE group. Exercise training was seven weeks, with two sessions per week, for 35 minutes per session. Affect was measured by the (+5 (pleasurable) to -5 (displeasurable)) feelings scale. Affect was recorded at the mid-point …