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The Influence of Classroom Physical Activity Participation and Time on Task on Academic Achievement.

Sun, 10/06/2019 - 02:13
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The Influence of Classroom Physical Activity Participation and Time on Task on Academic Achievement.

Transl J Am Coll Sports Med. 2019 Jun 15;4(12):84-95

Authors: Szabo-Reed AN, Willis EA, Lee J, Hillman CH, Washburn RA, Donnelly JE

Abstract
Objectives: Determine the impact of classroom-based physically active lessons on time-on-task. Secondarily, determine the relationship of time-on-task with academic achievement controlling for key demographic variables.
Methods: Seventeen elementary schools were cluster randomized to receive classroom physical activity (A+PAAC, N=9) or control (i.e., no physical activity, N=8) for a 3-year trial. Teachers were trained to deliver physically active lessons with moderate-to-vigorous intensity targeting 100 minutes per week. Outcome measures included academic achievement (Weschler Individual Achievement Test-III), administered at baseline and repeated each spring for 3 years, time spent in moderate-to-vigorous physical activity (MVPA), and time spent on task (TOT) pre- and post-physical activity. Multilevel modeling was utilized to estimate the impacts of percent time spent in MVPA and percent TOT post-lesson on academic achievement and the change in these impacts over 3 years, accounting for dependency among observations and covariates including age, gender, race, free or reduced lunch, BMI, and fitness.
Results: A greater percentage of time performing MVPA were each significantly associated with higher math scores (p=.034) and spelling scores (p<.001), but not reading scores. Academic achievement was not associated with TOT.
Conclusion: Findings suggest that a greater percentage of time spent participating in MVPA results in higher math scores and spelling scores, but not reading scores, independent of TOT. Future studies should continue to evaluate the influence of physically active classroom lessons on time spent on task and its impact on academic achievement. Furthermore, strategies are needed to maximize impact and to determine the sustainability of physical activity's effect on classroom behavior and academic achievement.

PMID: 31576376 [PubMed]

Weight management in rural health clinics: The Midwest diet and exercise trial.

Sun, 09/15/2019 - 00:20
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Weight management in rural health clinics: The Midwest diet and exercise trial.

Contemp Clin Trials. 2018 04;67:37-46

Authors: Gorczyca AM, Washburn RA, Ptomey L, Mayo MS, Sullivan DK, Gibson CA, Lee R, Stolte S, Donnelly JE

Abstract
Obesity prevalence is higher in rural compared to urban residents. Rural health clinics offer a potential venue for delivery of weight management. However, traditional programs require travel to attend on-site meetings which is impractical or inconvenient for rural residents. Clinic staff in most rural settings are unlikely to be trained to provide effective weight management. Remote delivery using group phone conferences (GP) or individual phone calls (IP), by staff associated with rural clinics eliminates the need for travel to attend on-site meetings. The effectiveness of these approaches will be the focus of this trial. Staff at five primary care clinics, serving primarily rural residents, will be trained to deliver GP and IP interventions and an enhanced usual care (EUC), (i.e., individual face-to-face meetings (~45 min) at clinic site, four times across 18 mos.). Two hundred overweight/obese adults (BMI ≥ 25.0-45.0 kg/m2, age ≥ 21 yrs.) will be recruited through each clinic and randomized to GP (n = 80), IP (n = 80), or EUC (n = 40) to compare weight loss (0-6 mos.), weight maintenance (7-18 mos.), and weight change during a 6 mo. no contact follow-up (19-24 mos.) between intervention arms. The GP and IP interventions will be identical in lesson plan content, diet, and physical activity. The only difference between groups will be the delivery format (group vs. individual) and session duration (GP ~45 min/session; IP ~15 min/session). Primary (body weight) and secondary outcomes (waist circumference, energy/macronutrient intake, physical activity) will be assessed at baseline, 6, 12, 18 and 24 mos. Cost and contingent valuation analyses will also be completed.
NCT REGISTRATION: NCT02932748.

PMID: 29454140 [PubMed - indexed for MEDLINE]

The Health Risks of Obesity Have Not Been Exaggerated.

Sat, 08/17/2019 - 23:10
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The Health Risks of Obesity Have Not Been Exaggerated.

Med Sci Sports Exerc. 2019 01;51(1):222-225

Authors: Jakicic JM, Rogers RJ, Donnelly JE

PMID: 30550507 [PubMed - indexed for MEDLINE]

Individual and family-based approaches to increase physical activity in adolescents with intellectual and developmental disabilities: Rationale and design for an 18 month randomized trial.

Sat, 07/27/2019 - 22:10
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Individual and family-based approaches to increase physical activity in adolescents with intellectual and developmental disabilities: Rationale and design for an 18 month randomized trial.

Contemp Clin Trials. 2019 Jul 22;84:105817

Authors: Ptomey LT, Washburn RA, Lee J, Greene JL, Szabo-Reed AN, Sherman JR, Danon JC, Osborne LN, Little TD, Donnelly JE

Abstract
Adolescents with intellectual and developmental disabilities (IDD) are less physically active and have lower cardiovascular fitness compared with their typically developing peers. This population faces additional barriers to participation in moderate-to-vigorous physical activity (MVPA) such as reliance on parents, lack of peer-support, and lack of inclusive physical activity opportunities. Previous interventions to increase MVPA in adolescents with IDD have met with limited success, at least in part due to requiring parents to transport their adolescent to an exercise facility. We recently developed a remote system to deliver MVPA to groups of adolescents with IDD in their homes via video conferencing on a tablet computer. This approach eliminates the need for transportation and provides social interaction and support from both a health coach and other participants. We will conduct a 18-mo. trial (6 mos. active, 6 mos. maintenance, 6 mos. no-contact follow-up) to compare changes in objectively assessed MVPA in 114 adolescents with IDD randomized to a single level intervention delivered only to the adolescent (AO) or a multi-level intervention delivered to both the adolescent and a parent (A + P). Our primary aim is to compare increases in MVPA (min/d) between the AO and A + P groups from 0 to 6 mos. Secondarily we will compare changes in MVPA, sedentary time, cardiovascular fitness, muscular strength, motor ability, quality of life, and the percentage of adolescents achieving the US recommendation of 60 min. MVPA/d across 18 mos. We will also explore the influence of process variables/participant characteristics on changes in MVPA across 18 mos. NCT registration: NCT03684512.

PMID: 31344519 [PubMed - as supplied by publisher]

The effects of exercise session timing on weight loss and components of energy balance: midwest exercise trial 2.

Sat, 07/13/2019 - 21:10

The effects of exercise session timing on weight loss and components of energy balance: midwest exercise trial 2.

Int J Obes (Lond). 2019 Jul 09;:

Authors: Willis EA, Creasy SA, Honas JJ, Melanson EL, Donnelly JE

Abstract
BACKGROUND/OBJECTIVES: Circadian physiology has been linked to body weight regulation and obesity. To date, few studies have assessed the association between exercise timing and weight related outcomes. The aim of this secondary analysis was to explore the impact of exercise timing (i.e., 24 h clock time of exercise session) on weight loss and components of energy balance.
SUBJECTS/METHODS: Overweight/obese (BMI 25.0-39.9 kg/m2), physically inactive, young adults (~51% female) completed a 10-month supervised exercise program (400 or 600 kcal/session for 5 days/week) or served as non-exercise controls (CON). Participants were categorized based on the time of day in which they completed exercise sessions (Early-Ex: >50% of sessions completed between 7:00 and 11:59 am; (n = 21), Late-Ex: >50% of sessions completed between 3:00 and 7:00 pm; (n = 25), Sporadic-Ex: <50% of sessions completed in any time category; (n = 24), and CON; (n = 18)). Body weight, energy intake (EI; digital photography), and non-exercise physical activity (NEPA; accelerometer) were assessed at baseline, 3.5, 7, and 10 months. Total daily energy expenditure (TDEE; doubly labeled water), was assessed at baseline and 10 months.
RESULTS: At month 10, weight loss was significantly greater in both Early-EX (-7.2 ± 1.2%; p < 0.001) and Sporadic-EX (- 5.5 ± 1.2%; p = 0.01) vs CON (+0.5 ± 1.0%), and Early-EX vs Late-EX (-2.1 ± 1.0%; p < 0.001). There were no between group differences for change in TDEE, EI, and non-exercise energy expenditure (P > 0.05). A significant group × time interaction (p = 0.02) was observed for NEPA (counts/min), however, after adjusting for multiple comparisons, group effects were no longer significant.
CONCLUSIONS: Despite minimal differences in components of energy balance, Early-EX lost significantly more weight compared with Late-Ex. Although the mechanisms are unclear, the timing of exercise may be important for body weight regulation.

PMID: 31289334 [PubMed - as supplied by publisher]

The Feasibility of Group Video Conferencing for Promotion of Physical Activity in Adolescents With Intellectual and Developmental Disabilities.

Sat, 07/06/2019 - 21:09
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The Feasibility of Group Video Conferencing for Promotion of Physical Activity in Adolescents With Intellectual and Developmental Disabilities.

Am J Intellect Dev Disabil. 2017 11;122(6):525-538

Authors: Ptomey LT, Willis EA, Greene JL, Danon JC, Chumley TK, Washburn RA, Donnelly JE

Abstract
Physical activity (PA) rates of adolescents with intellectual and developmental disabilities (IDD) are low and effective strategies for increasing PA are limited. The purpose of this study was to assess the feasibility of a group-based PA intervention that was delivered remotely to adolescents with IDD. Participants attended 30-min group PA sessions 3 times a week. PA sessions were delivered in their homes by video conferencing on a tablet computer. Thirty-one participants enrolled and 29 completed the 12-week intervention. Participants attended 77.2% ± 20.8% of scheduled sessions and averaged 26.7 ± 2.8 min of PA/session, with 11.8 ± 4.8 min at moderate- to vigorous intensity. Group-based PA delivered remotely may be a feasible approach for the promotion of PA in adolescents with IDD.

PMID: 29115872 [PubMed - indexed for MEDLINE]


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