Classroom Teachers' Perceived Barriers to Implementing Comprehensive School Physical Activity Programs (TPB- CSPAP): Instrument Development.

Although physical education teachers generally act as the physical activity champion and promote adherence to whole-school physical activity programs, classroom teachers manage the majority of students' access to movement throughout the school day. Purpose: To support the adoption of a whole-school physical activity program, this study developed an instrument that identifies barriers perceived by classroom teachers related to adopting this type of program in their school. Method: A four-step process provided the conceptual framework for this instrument development (literature review, expert review, quantitative evaluation, and validation). The final validation phase (N = 520 teachers) included two individual analyses to separately evaluate respondents from elementary (K-5) and secondary levels (6-12). Each group was randomly split to run exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) of the models. Results: CFA results support models with adequate fit to the data for barriers for elementary, e.g., (SRMR = 0.0726; Bentler CFI = 0.92.79) and secondary (SRMR = 0.0813; Bentler CFI = 0.9374) teachers for whole-school programming. Conclusion: This instrument can be used by school personnel and researchers to understand perceived barriers for classroom teachers to implement a whole-school physical activity program in their context and then follow up to remove or reduce the barriers.

School and Home Contributions to Dietary Behaviors of Rural Youth.

PURPOSE: This study examined dietary behaviors of rural youth at school and at home and sociodemographic differences. DESIGN: A cross-sectional design was used. SETTING: The study took place in five rural schools in the Southwestern US. SAMPLE: Student participants (N = 751) were in 3rd-8th grades. MEASURES: Consumption of fruits, vegetables, dairy, and soda/pop, at school and at home, were measured using a modified 7-day recall Youth Risk Behavior survey for nutrition instrument (CDC, 2011); Sociodemographic data. ANALYSIS: Descriptive statistics, frequency tables and MANCOVA were used. RESULTS: Following a natural log transformation of the dependent variables, there were significant multivariate effects in dietary behaviors across schools (Wilks' λ = 0.962, F(16, 2539.4) = 2.05, P = 0.0082) and location (school v. home; Wilks' λ = 0.849, F(4, 831) = 36.94, P < 0.0001). Follow-up tests showed students in some schools reported higher consumption of fruit, vegetable, and soda at home than school, although most reported consuming less than one serving per day of fruit, vegetables, and dairy across settings. There were no significant main effects for gender/grade/ethnicity across behaviors. CONCLUSIONS: Findings highlight poor dietary behaviors of rural youth as well as school/home differences that can help inform efforts to support optimal dietary behaviors of this population. Results should be interpreted considering limitations of the self-report nature of collected data and missing data.

Slow-Breathing Curriculum for Stress Reduction in High School Students: Lessons Learned From a Feasibility Pilot.

Purpose: Nearly one in three US adolescents meet the criteria for anxiety, an issue that has worsened with the COVID-19 pandemic. We developed a video-based slow diaphragmatic breathing stress-reduction curriculum for high school students and evaluated its feasibility, tolerability, and preliminary effectiveness. Methods: This cluster-randomized feasibility pilot compared 5-min slow diaphragmatic breathing for 5 weeks with treatment-as-usual control among four 12th-grade public high school classes. Students individually participated after school during COVID-19-related hybrid teaching, with slow diaphragmatic breathing three times/week and breath science education once/week. Feasibility was based on completion of breathing exercises, breath science education, and preliminary effectiveness assessments, and ease/tolerability was based on qualitative assessments. Preliminary effectiveness was measured with the State-Trait Anxiety Inventory (STAI) and a timed-exhale carbon dioxide tolerance test (CO2TT) of physiological stress response. Descriptive statistics and repeated analysis of variance were performed to quantify and compare outcomes between time periods. Human subjects research approval was granted through Western IRB-Copernicus Group (WCG IRB) [ClinicalTrials.gov, Identifier: NCT05266833.]. Results: Forty-three students consented to participate. Breath practice compliance ranged from 29 to 83% across classes and weeks, and decreased on average over the 5 weeks. Compliance with the breath science videos ranged from 43 to 86%, and that with the weekly STAI-State and CO2TT measures varied from 36 to 86%. Compliance with ease/tolerability assessments ranged from 0 to 60%. Preliminary effectiveness assessments' compliance varied across classes from 83 to 89% during baseline, and 29 to 72% at follow-up. The curriculum was rated as somewhat-to-definitely useful/beneficial, and definitely-to-very easy/tolerable. Students reported enjoying the diaphragmatic breathing, CO2TT, and breath science education; some found the extended exhales challenging and the curriculum and assessments time-consuming. Preliminary effectiveness analyses indicated no significant changes in STAI or CO2TT from baseline to followup or from before to after breathing exercises (p > 0.05 for all). Conclusions: Implementation of this 5-week slow breathing curriculum was feasible and tolerable to this cohort. Compliance, tolerability, and effectiveness may be improved with in-class participation. Future research on simple and accessible slow-breathing exercises is warranted to address today's adolescent stress-management crisis. Trial Registration: ClinicalTrials.gov, Identifier: NCT05266833.

Changes in school-day step counts during a physical activity for Lent intervention: a cluster randomized crossover trial of the Savior's Sandals.

BACKGROUND: Participation in regular physical activity (PA) has many health benefits for school-aged children. However, only about 20% of children worldwide meet recommendations for being sufficiently active. Children spend many hours per day at school and schools have a mandate for promoting PA. Private religious schools could serve as a novel source for religious-themed PA interventions. METHODS: We randomly allocated 2 clusters of 2 Catholic middle (grades 6-8) schools/cluster to a 2-week no treatment/4-week intervention crossover trial to determine the effects of a 20-day Lenten-themed PA intervention on 187 students' pedometer steps taken at school. Specifically, students independently progressed through a workbook (Savior's Sandals) that depicted and informed about 11 locations in the Holy Land where Jesus lived, visited, and/or ministered, and included Scripturally-based questions about each place for students to answer. In all, students would accumulate 110,000 steps if they completed the workbook virtual journey. General linear mixed models with restricted maximum likelihood estimation to compensate for missing data were used to compute the intervention effects on mean daily steps. RESULTS: There were significant main effects for the intervention overall and by school and grade level. Follow-up tests isolated that a single school (Meandiff = + 2156 steps/day) and grade 6 students (Meandiff = + 1678 steps/day) across all four schools experienced the greatest treatment effects. CONCLUSIONS: Religious-themed PA interventions can be effective; however, specific adjustments may be needed to optimize the intervention's effectiveness for a broader population of students. TRIAL REGISTRATION: Current Controlled Trials ISRCTN10273669 . Retrospectively registered 23 Oct 2018.

Developing the System for Observing Behavioral Ecology for Youth in Schools Instrument.

BACKGROUND: Behavioral support may be effective in increasing physical activity (PA) in school settings. However, there are no data collection systems to concurrently record PA and behavioral support. This paper describes the development and validation of the System for Observing Behavioral Ecology for Youth in Schools (SOBEYS)-an instrument used with existing observation systems to record PA within a behavioral ecological context. METHODS: In 2013, experts created a set of behavioral categories to record prompting and reinforcement of PA during a recreational school activity program. The school provided supervision and equipment for lunchtime PA, making it possible to assess both PA and behavioral support. The system was implemented in spring semester 2014 at 1 suburban junior high school (N = 1452; 48% girls, 74% Caucasian) in the western Unites States. RESULTS: Following multiple field trials, the SOBEYS instrument recorded behavioral categories of visual and verbal prompting, verbal, and nonreinforcement by adults and peers, and token reinforcement. Construct validity and acceptable interobserver agreement (>90%; kappa between 0.22 and 0.94) resulted. CONCLUSION: Trained SOBEYS users can accurately and reliably record the presence of behavioral support aimed at prompting and reinforcing PA in conjunction with established systematic observation instruments to record PA context and quantity.

Environmental and Behavioral Influences of Physical Activity in Junior High School Students.

BACKGROUND: Increasing access and opportunity for physical activity (PA) in schools are effective; however, not everyone experiences the same effects. Prompting and reinforcement may encourage more frequent participation in recreational PA during the school day. The purpose of this study was to investigate a lunchtime PA intervention on whole school PA participation and whether behavioral support enhanced these effects. METHODS: A modified reversal design compared an environmental and an environmental plus behavioral support intervention on lunchtime PA participation versus baseline levels in a suburban junior high school in the western United States (N = 1452). PA and related contextual data were collected using systematic observation. RESULTS: Significantly more girls and boys were observed in PA during the interventions compared with baseline phases (F2,1173 = 13.52, P < .0001, η2 = .023; F2,1173 = 20.14, P < .0001, η2 = .033, for girls and boys, respectively). There were no significant differences between the environmental phase and the environment plus behavioral support phase. CONCLUSION: Providing access and opportunity significantly increased the number of girls and boys observed in PA during a lunchtime program, with no additive effects of behavioral support. Further research into providing the individual-level contingencies at an institutional level is needed.

Effects of hypoxia on the onset of muscle deoxygenation and the lactate threshold.

Six subjects performed two trials of incremental cycling to exhaustion under normoxic and hypoxic conditions. The lactate threshold and onset of muscle deoxygenation were highly correlated under both conditions, and during the hypoxic condition both variables shifted leftward.