Racial/Ethnic Differences in Self-Reported Upper Limb Limitations Among U.S. Older Adults.

BACKGROUND: The development of disability related to activities of daily living (ADL) is of great concern in the aging population, particularly for Hispanic and Non-Hispanic (NH) Black older adults, where disability prevalence is greater compared to NH Whites. ADL-disability is typically measured across many functional tasks without differentiating upper- versus lower-limb limitations, hindering our understanding of disability burden. Despite the importance of the upper limbs for completing ADL and known age-related declines in function, racial/ethnic differences in upper limb function remain largely unknown. METHODS: We identified 4 292 NH White, NH Black, and Mexican American older adults (≥65) from the 2011-2018 waves of the National Health and Nutrition Examination Survey (NHANES). We classified participants as having a limitation based on their ability to complete 5 upper-limb tasks (preparing meals, eating, dressing, reaching overhead, and grasping small objects) and compared limitation rates across racial/ethnic groups. RESULTS: Compared to NH Whites, NH Black older adults had significantly greater odds of reporting difficulties preparing meals (odds ratio [OR]: 1.36, 95% confidence interval [95% CI]: 1.01, 1.86) and dressing (OR: 1.55, 95% CI: 1.19, 2.02), while Mexican Americans had greater difficulty preparing meals (OR: 1.70, 95% CI: 1.12, 2.58), dressing (OR: 1.63, 95% CI: 1.12, 2.36), and grasping small objects (OR: 1.48, 95% CI: 1.06, 2.07). CONCLUSIONS: Our results demonstrate differences in self-reported upper limb ADL-disability across racial/ethnic groups, particularly for Mexican American older adults. Such findings underscore the need for routine monitoring of upper limb function throughout adulthood to identify limitations and target therapeutic interventions before independence is compromised.

All Stressors Are Not Equal: The Salience of Racial Discrimination and Appraisal for Blood Pressure in African American Women.

OBJECTIVE: Psychosocial stress is a major predictor of chronic disease among African American (AA) women. Stress is a process involving exposure, appraisal of threat, coping, and psychobiologic adaptation. However, many studies focus on the frequency of stress events and/or coping; few explicitly study stress events and their appraisals; and AA women experience high levels of racial discrimination, a well-known form of social identity threat (i.e., negative experiences due to judgment based on identity). Stressors related to social identity threat may be differentially appraised and associated with divergent physiologic outcomes. This study examined the differences in the frequency and stressfulness associated with general stressors and racial discrimination in relation to blood pressure (BP) among AA women. METHODS: Multivariable regression was used on cross-sectional data from 208 middle-aged AA women residing in the San Francisco Bay Area. RESULTS: AA women reported less frequency of racial discrimination compared with general stressors, but were more likely to appraise racial discrimination events as stressful. Racial discrimination stressfulness was more strongly associated with systolic BP (SBP) than the number of racial discrimination events. There was a U-shaped association between racial discrimination stress and SBP, with those reporting "none" and "high/very high" distress having the highest SBP ( b = 12.2 [2.7 to 21.8] and b = 15.7 [1.5-29.8], respectively, versus moderate stress). Conversely, those reporting "very low" general stressfulness had the lowest SBP ( b = -7.9 [-15.8 to -0.1], versus moderate stress). Diastolic BP followed a similar pattern, although results were nonsignificant. CONCLUSIONS: This study highlights the importance of stress appraisal measures and adds to the body of evidence documenting racial discrimination as a salient psychosocial stressor for AA women.

Use of a Novel Theory-Based Pragmatic Tool to Evaluate the Quality of Instructor-Led Exercise Videos to Promote Youth Physical Activity at Home: Preliminary Findings.

BACKGROUND: Exercise videos that work to minimize cognitive load (the amount of information that working memory can hold at one time) are hypothesized to be more engaging, leading to increased PA participation. PURPOSE: To use a theory-based pragmatic tool to evaluate the cognitive load of instructor-led exercise videos associated with the Interrupting Prolonged Sitting with ACTivity (InPACT) program. METHODS: Exercise videos were created by physical education teachers and fitness professionals. An evaluation rubric was created to identify elements each video must contain to reduce cognitive load, which included three domains with four components each [technical (visual quality, audio quality, matching modality, signaling), content (instructional objective, met objective, call-to-action, bias), and instructional (learner engagement, content organization, segmenting, weeding)]. Each category was scored on a 3-point scale from 0 (absent) to 2 (proficient). A video scoring 20-24 points induced low cognitive load, 13-19 points induced moderate cognitive load, and less than 13 points induced high cognitive load. Three reviewers independently evaluated the videos and then agreed on scores and feedback. RESULTS: All 132 videos were evaluated. Mean video total score was 20.1 ± 0.7 points out of 24. Eighty-five percent of videos were rated low cognitive load, 15% were rated moderate cognitive load, and 0% were rated high cognitive load. The following components scored the highest: audio quality and matching modality. The following components scored the lowest: signaling and call-to-action. CONCLUSIONS: Understanding the use of a pragmatic tool is a first step in the evaluation of InPACT at Home exercise videos. Our preliminary findings suggest that the InPACT at Home videos had low cognitive load. If future research confirms our findings, using a more rigorous study design, then developing a collection of instructor-led exercise videos that induce low cognitive load may help to enhance youth physical activity participation in the home environment.

Racial Discrimination and Hypothalamic-Pituitary-Adrenal Axis Dysregulation in Adolescents With Overweight and Obesity: Does Context Matter?

OBJECTIVES: In adolescents at higher risk for chronic disease, the role that context of a discriminatory event may play on cortisol dysregulation is unclear. The purpose of this study was to perform a cross-sectional analysis examining the association between racial discrimination context (peer, educational, institutional, and cumulative) and diurnal cortisol patterning in adolescents with overweight and obesity. METHODS: One hundred adolescents (13-19 years; 49% non-Hispanic Black; 65% female; body mass index percentile = 93.9% [4.14%]) were included in this analysis. Racial discrimination context was measured using the self-reported Adolescent Discrimination Distress Index. Salivary cortisol, collected across 3 days at five time points during the day, was used to calculate Δ 0-30 minutes, diurnal slope, and average total diurnal cortisol area under the curve. Sixteen separate multivariable linear regression models were performed to analyze the relationship between racial discrimination and diurnal cortisol patterns. RESULTS: Primary findings show that cumulative racial discrimination and peer discrimination were associated with a greater diurnal slope (cumulative: ß = 0.010 ± 0.004, p = .03; peer: ß = 0.023 ± 0.010, p = .026). CONCLUSIONS: Findings from this study identified cross-sectional associations between racial discrimination experienced among peers and diurnal cortisol patterns in adolescents with overweight/obesity. If our findings were to be confirmed in longitudinal analyses, evidence-based programs should be considered to buffer the effects of discrimination on adolescent health, and more importantly, policy makers should work to eliminate discrimination exposure.

An exploratory analysis examining differences in physical activity and motor competence in children with and without asthma: brief report.

OBJECTIVE: The purpose of this pilot study was to examine potential differences in motor competence (MC) and physical activity (PA) between children with and without asthma. METHODS: Thirty-seven children and adolescents completed the Exercises for a Healthy Asthma Lifestyle and Enjoyment study (46% with asthma, 51% female, 11.1 ± 0.4 years, and 46% White). Motor competence was assessed using the Movement Assessment Battery for Children 2nd edition (MABC-2). PA was assessed using accelerometry. RESULTS: Children with asthma had significantly lower MC in the domain of aiming and catching (with asthma: 8.2 ± 0.4 vs. without asthma: 9.9 ± 0.5; p = 0.03) and fewer daily minutes spent in moderate-to-vigorous PA (MVPA) (with asthma: 18.0 ± 2.3 min vs. without asthma: 27.2 ± 3.6 min; p = 0.047). There were no significant group differences in manual dexterity, balance, total MABC-2 score, or total daily PA (all ps > 0.05). CONCLUSIONS: This study provides confirmatory evidence that children with asthma display lower MC and spend less time in MVPA compared to children without asthma. Because MC is a prerequisite for engaging in PA, future research should seek to determine if the differences observed in MC contribute to disparities in MVPA observed in this clinical population.

Aligning Organizational Priorities and System Policies to Support Implementation Scale-Up of a Tailored Classroom-Based Physical Activity Intervention in Low-Resource Schools.

BACKGROUND: A mismatch between organizational priorities and system-level policies can negatively impact implementation and sustainment of classroom-based physical activity (PA) interventions. The purpose of this study was twofold: (1) present methods to systematically identify organization- and system-level implementation barriers, and (2) align organizational priorities and system policies by designing multi-level implementation strategies. This alignment will support implementation scale-up of a tailored PA intervention in one low-resource intermediate school district (ISD; 16 districts, 32 schools) in central Michigan. METHODS: Multi-level assessments of organizational readiness were conducted using the Hexagon Discussion and Analysis Tool to assess intervention-context fit, the Wellness School Assessment Tool 3.0 to evaluate district PA policy strength and comprehensiveness, and semi-structured interviews were conducted to assess administrative support and priorities related to PA programming. RESULTS: Our assessments revealed three implementation barriers: limited structural capacity to sustain teacher training, limited resources across districts and school buildings to support teachers, and misalignment of ISD and district PA policies and priorities. CONCLUSIONS: Greater attention to organizational capacity and existing infrastructure should be considered a priori to support effective implementation and sustainment of PA interventions in low-resource schools.

Considerations for Implementing the Post-Concussion Collegiate Return-to-Learn Protocol in the National Collegiate Athletic Association Power 5 Conferences.

OBJECTIVE: Although concussions affect millions of young adults annually, researchers have yet to assess factors that may affect future implementation of post-concussion academic supports within higher education. Therefore, we sought to evaluate preimplementation outcomes of the acceptability, feasibility, appropriateness, and readiness for change of the Post-Concussion Collegiate Return-to-Learn (RTL) Protocol among university stakeholders. SETTING: An online survey. PARTICIPANTS: A convenience sample ( N = 49; 63.3% female) of athletic trainers (ATs; n = 25, age = 30.1 ± 7.6 years) and university faculty/staff ( n = 24, age = 38.3 ± 9.9 years) across the National Collegiate Athletic Association (NCAA) Power 5 Conferences from January to February 2022. DESIGN: A cross-sectional study. MAIN MEASURES: To compare preimplementation outcome measures using the Acceptability of Intervention Measure (AIM), Feasibility of Intervention Measure (FIM), Intervention Appropriateness Measure (IAM), and Organizational Readiness for Implementing Change (ORIC) regarding the RTL protocol between ATs and university faculty/staff. Additional outcomes included internal and external barriers to implementing at their respective institutions. Statistical analyses were conducted using Mann-Whitney U tests, with effect sizes estimated using eta-squared coefficient (η 2 ). RESULTS: Quantitative analyses yielded no statistically significant group differences ( P s > .05) across the AIM, FIM, and IAM outcomes, indicating both groups perceived the protocol to be acceptable, feasible, and appropriate. Moreover, ATs reported higher agreement regarding motivation, desire, willingness to do "whatever it takes," commitment, and determination to implement the novel protocol than faculty/staff. Further, ATs reported higher agreement regarding their institution's confidence to keep track of its progress, support adjustment, maintain momentum, manage institutional politics, coordinate tasks, encourage investment, and handle the challenges of future implementation of the RTL protocol. CONCLUSIONS: Preliminary findings suggest ATs and university faculty/staff across the NCAA Power 5 Conferences may perceive the RTL protocol to be acceptable, feasible, and appropriate for future use; however, noteworthy internal and external barriers may influence its uptake. Future research should utilize implementation frameworks to support the protocol's adoption and reach.

A Novel Policy Alignment and Enhancement Process to Improve Sustainment of School-Based Physical Activity Programming.

The purpose of the current study was twofold: (1) to evaluate the strength and comprehensiveness of district wellness policies in one central Michigan intermediate school district (ISD; 16 districts), and (2) to pilot a novel policy alignment and enhancement process in one district within the ISD to improve sustainment of district-wide physical activity (PA) programming. Policy evaluation and alignment were determined using WellSAT 3.0. The Exploration, Preparation, Implementation, Sustainment (EPIS) framework was used to guide a seven-step policy alignment and enhancement process. Initial evaluation of the PA policy for the ISD revealed a strength score of 19/100 (i.e., included weak and non-specific language) and 31/100 for comprehensiveness (i.e., mentioned few components of the Comprehensive School Physical Activity Program). For the pilot school district, initial strength scores were 19/100 and 38/100 for comprehensiveness (exploration). An alignment of the tailored PA policy with current practices resulted in a 100% increase in strength (score of 38/100), and 132% increase in comprehensiveness (score of 88/100; preparation). However, district administrators encountered barriers to adopting the tailored policy and subsequently integrated the PA requirements into their curriculum guide and school improvement plan (implementation and sustainment). Future research should examine the effectiveness of our EPIS-informed policy evaluation, alignment, and enhancement process to promote widespread increases in student PA.

Recommendations for Medical Discharge Documentation and Academic Supports for University Students Recovering From Concussion.

OBJECTIVE: This study sought to (1) collate the experiences of university students with concussion history and academic stakeholders through interviews and (2) develop concussion management recommendations for institutions of higher learning using a multidisciplinary Delphi procedure. SETTING: Remote semistructured interviews and online surveys. PARTICIPANTS: The first aim of this study included undergraduate university students with concussion history who did not participate in varsity athletics ( n = 21; 57.1% female), as well as academic faculty/staff with experience assisting university students with their postconcussion academic needs ( n = 7; 71.4% female). The second aim enrolled 22 participants (54.5% female) to serve on the Delphi panel including 9 clinicians, 8 researchers, and 5 academic faculty/staff. DESIGN: An exploratory-sequential mixed-methods approach. MAIN MEASURES: Semistructured interviews were conducted to unveil barriers regarding the return-to-learn (RTL) process after concussion, with emergent themes serving as a general framework for the Delphi procedure. Panelists participated in 3 stages of a modified Delphi process beginning with a series of open-ended questions regarding postconcussion management in higher education. The second stage included anonymous ratings of the recommendations, followed by an opportunity to review and/or modify responses based on the group's consensus. RESULTS: The results from the semistructured interviews indicated students felt supported by their instructors; however, academic faculty/staff lacked information on appropriate academic supports and/or pathways to facilitate the RTL process. Of the original 67 statements, 39 achieved consensus (58.2%) upon cessation of the Delphi procedure across 3 main categories: recommendations for discharge documentation (21 statements), guidelines to facilitate a multidisciplinary RTL approach (10 statements), and processes to obtain academic supports for students who require them after concussion (8 statements). CONCLUSIONS: These findings serve as a basis for future policy in higher education to standardize RTL processes for students who may need academic supports following concussion.

Achieving Consensus Through a Modified Delphi Technique to Create the Post-concussion Collegiate Return-to-Learn Protocol.

BACKGROUND: Sport-related concussions (SRCs) affect millions of adolescents and young adults annually in the USA; however, current SRC consensus statements provide limited guidance on academic support for students within higher education. OBJECTIVE: To generate consensus on appropriate academic recommendations for clinicians, students, and academic stakeholders to support university students during their recovery. METHODS: Panelists participated in three stages of a modified Delphi procedure: the first stage included a series of open-ended questions after reviewing a literature review on post-SRC return-to-learn (RTL) in higher education; the second stage asked panelists to anonymously rate the recommendations developed through the first Delphi stage using a 9-point scale; and the final stage offered panelists the opportunity to change their responses and/or provide feedback based on the group's overall ratings. RESULTS: Twenty-two panelists including clinicians, concussion researchers, and academic stakeholders (54.5% female) from 15 institutions and/or healthcare systems participated in a modified Delphi procedure. A total of 42 statements were developed after round one. Following the next two rounds, 27 statements achieved consensus amongst the panel resulting in the four-stage Post-Concussion Collegiate RTL Protocol. CONCLUSION: There are several unique challenges when assisting university students back to the classroom after SRC. Explicit guidelines on when to seek additional medical care (e.g., if they are experiencing worsening or persistent symptoms) and how to approach their instructor(s) regarding academic support may help the student self-advocate. Findings from the present study address barriers and provide a framework for universities to facilitate a multidisciplinary approach amongst medical and academic stakeholders.

Rapid cycle adaptation of a classroom-based intervention to promote equity in access to youth physical activity.

Our objective was to systematically adapt Interrupting Prolonged sitting with ACTivity (InPACT), a classroom-based physical activity intervention, for home delivery to equitably increase access to structured youth physical activity opportunities during the COVID-19 pandemic. Key steps in the rapid-cycle research adaptation process included: (Step 1) identifying partner organizations; (Steps 2 and 3) engaging in problem and knowledge exploration to examine the problem from different perspectives; (Steps 4 and 5) initiating solution development and testing by selecting an intervention and adapting the format and content for home delivery. Using Rapid RE-AIM to guide online assessment and refinement of InPACT at Home; and (Step 6) utilizing dissemination strategies to extend the reach of the program. Core elements of the InPACT program that were retained included: the use of exercise videos, maintenance of the intervention dose, and teacher-led physical activities. Key adaptations included: utilization of physical education specialists to develop the exercise videos, incorporation of health messaging in videos, and utilization of dissemination strategies (intervention website) to reach K-12 students across the state. Intervention website reach included all 83 counties in Michigan, but goals were not met for website pageviews (5,147; 85% of goal) and video view duration (7 min 19 sec; 37% of goal). Accordingly, dissemination was expanded to include public television broadcasting (monthly viewers: 500,000) and videos were shortened to 8 minutes. Dissemination and implementation science frameworks guided the rapid adaptation of an existing intervention, InPACT, to equitably increase access to structured youth physical activity opportunities at home during the pandemic.

Weight stigma and physical activity avoidance among college-aged students.

This study explored cross-sectional associations between prior weight stigma experiences, physical activity (PA) intentions, behaviors, and the acute effects of a weight stigma exposure on PA intentions and behaviors among undergraduate students. Weight-stigma experiences and behavioral intentions were self-reported. Moderate-to-vigorous PA and total PA were assessed using accelerometry. Participants were randomized into two experimental conditions (a weight stigma or control condition) to assess the acute effects of a weight stigma exposure. Forty-nine students (81.6% female; 59.2% Non-Hispanic White; 19.6 ± 1.1 years of age; body mass index: 23.9 ± 4.0 kg/m2) completed the study. Prior weight stigma experiences were positively associated with PA avoidance (ß = 12.1 ± 2.7; p < .001) but were not associated with positive PA intentions or behaviors (ps > .05). There were no differences in positive PA intentions, PA avoidance, or PA behaviors across conditions (all ps > .05). Future studies should examine the long-term effects of weight stigma on PA avoidance and objectively measured PA in young college students.

COVID-19: Implications for Physical Activity, Health Disparities, and Health Equity.

Physical activity is one of the most efficacious pathways to promoting mental and physical health, preventing disease, and, most important during the COVID-19 pandemic, bolstering a stronger immune system. Efforts to "flatten the curve" have resulted in the temporary closure of exercise facilities and gyms, suspension of sport activities, and advisories to avoid public recreational spaces. All of these changes have made traditional opportunities to be physically active difficult to access. These changes have also exacerbated existing disparities in access to social and environmental supports for physical activity, potentially contributing to a widening gap in physical activity participation among those at greatest risk for COVID-19. Physical activity can play a special role in reducing the inequitable consequences of COVID-19; however, expansion and better targeting of evidence-informed interventions are needed that address the unique barriers present in communities that have been economically and socially marginalized to achieve health equity in COVID-19 outcomes. This review highlights effective and feasible strategies that provide more equitable access to physical activity programs and spaces across the United States. With a renewed investment in physical activity, this behavior can play a crucial role in improving population health and reducing disparities during the COVID-19 pandemic and beyond.

Is maximum grip strength a reliable predictor of hand limitations among older adults?

BACKGROUND: Grip strength is commonly used to assess hand function among older adults. While shown to be associated with disability, the degree to which grip strength specifically predicts hand limitations is unknown. AIMS: The primary aim of this study was to evaluate grip strength as a predictor of hand limitations. METHODS: Using the 2011-14 National Health and Nutrition Examination Survey (NHANES), we classified older adults reporting one or more hand limitations versus those with no limitations. Odds ratios were used to assess the association between grip strength (separated into quartiles) and the likelihood of a hand limitation while controlling for sex, race/ethnicity, education level, income, and pain. Receiver operator characteristic (ROC) curves were used to evaluate the degree to which grip strength discriminates between older adults with and without a hand limitation. RESULTS: We identified 2064 older adults (age ≥ 65), 31% of whom reported a hand-related limitation. Older adults with very low grip strength (weakest quartile) were more likely to report at least one limitation (OR: 6.1, 95% CI: 3.2, 11.8) than those with high grip strength (strongest quartile). However, grip strength had poor to moderate discrimination of hand limitations (ROC area under curves: 0.65-0.81). DISCUSSION: While self-reported hand limitations were associated with lower grip strength; overall, it is a relatively poor predictor of hand impairments among older adults. CONCLUSION: Better assessments are needed to adequately evaluate upper extremity impairments to help older adults maintain functional independence.

Associations between Diet Quality and Allostatic Load in US Adults: Findings from the National Health and Nutrition Examination Survey, 2015-2018.

BACKGROUND: Allostatic load (AL), the concept of cumulative biological risk from chronic stressful exposures, may provide a framework with which to examine the links between diet, physiological stress, and disease. OBJECTIVE: This study examined the associations between diet quality and AL. DESIGN: This cross-sectional study was conducted using the 2015 through 2018 cycles of the National Health and Nutrition Examination Survey. Dietary intake was assessed using two 24-hour diet recalls. Diet quality was measured using the Healthy Eating Index 2015. AL was measured by a composite score of nine biochemical markers, with three or more dysregulated values signaling elevated AL. All markers were collected during a physical examination. PARTICIPANTS AND SETTING: This study was conducted in a nationally representative population of 5,343 US adults aged 19 years or older who had no prior diagnosis of diabetes (except gestational diabetes), cancer (except skin cancer), or cardiovascular disease; were not pregnant; and had complete dietary intake and AL biomarker data. MAIN OUTCOME MEASURES: The outcome was odds of elevated AL. STATISTICAL ANALYSES PERFORMED: Accounting for the complex survey design of the National Health and Nutrition Examination Survey, multivariable logistic regression was used to examine the associations between Healthy Eating Index 2015 score and elevated AL, adjusting for sociodemographic variables. RESULTS: A significant inverse association between AL and diet quality was observed among adults aged 31 years and older but not among those aged 19 to 30 years. Among adults aged 31 years and older, those in higher quintiles of Healthy Eating Index 2015 score had significantly lower odds of elevated AL compared with the lowest quintile (P for trend < 0.05). CONCLUSIONS: These results suggest that, in adults older than age 30 years, consuming a more healthful diet is inversely associated with AL.

Community Violence Exposure and Stress Reactivity in African American and Non-Latino White Adolescents With Overweight/Obesity.

Adolescents who experience community violence are exposed to toxic stressors at a critical period of growth and development. The purpose of this study was to examine the relationship between community violence exposure and stress reactivity in African American and non-Latino white adolescents with overweight/obesity. Fifty-one adolescents (47% female, 55% African American; aged 14-19) participated in this study. Community violence was assessed using the Survey of Children's Exposure to Community Violence. Stress reactivity was assessed via salivary cortisol and alpha-amylase area under the curve (AUC) during a Trier Social Stress Test (TSST). Race was a significant predictor of alpha-amylase reactivity (ß = 10740±3665, p = 0.0006), with a higher alpha-amylase AUC observed in African American compared to non-Latino white adolescents. There was also a significant difference in the relationship between community violence exposure and alpha-amylase AUC by race (ß = -3561±1226, p = 0.007). At similar increases in violence exposure, African Americans demonstrated a significant decline in alpha-amylase AUC while non-Latino whites demonstrated a significant increase in alpha-amylase AUC. Neither race nor violence exposure were significant predictors of cortisol AUC and there were no significant differences in the relationship between community violence exposure and cortisol AUC by race (all p's > .05). These preliminary findings suggest exposure to community violence may act to exacerbate autonomic dysregulation in African American adolescents with overweight/obesity. Longitudinal studies are needed to confirm the mechanisms by which community violence exposure differentially impacts stress responses by race.

Psychological Responses to Intermittent Activities in Children With and Without Asthma.

PURPOSE: The purpose of this study was to examine the psychological responses to intermittent activities of varying intensities and types among children with and without asthma. METHODS: A total of 37 children and adolescents (51% male, aged 8-16 y, 54% nonwhite, and 54% without asthma) participated in this study. Participants completed 5 exercises in the same order: self-paced walking, resistance activities, dance video, gamified obstacle course, and step test. In-task mood was assessed using the Feeling Scale, in-task perceived exertion was assessed via the ratings of perceived exertion scale, and postactivity enjoyment was assessed using the Physical Activity Enjoyment Scale. RESULTS: There was a significant main effect of exercise type on mood (P < .001), ratings of perceived exertion (P < .001), and enjoyment (P < .002). There was not a significant main effect of asthma status on mood, ratings of perceived exertion, or enjoyment (Ps > .05). Children with asthma reported significantly lower in-task mood during the step exercise (P < .037) and reported significantly lower postactivity enjoyment after the walk and obstacle course exercises (Ps < .03). CONCLUSIONS: Regardless of differences by asthma status for in-task mood during the obstacle course and for postactivity enjoyment during the walk and step exercises, both children with and without asthma reported high in-task mood and postactivity enjoyment during all 5 exercises.

Classroom-Based Strategies to Reduce Disparities in Physical Activity Among Children with Asthma.

Children with asthma often experience physical activity (PA) induced symptoms 5-15 min following the start of exercise. Classroom PA breaks provide short intermittent bouts of PA and may represent a novel strategy to safely promote PA participation in this clinical population. The purpose of this study was to determine the feasibility of a classroom-based PA intervention, Interrupting Prolonged Sitting with Activity (InPACT), where teachers implement 5 × 4-min moderate-to-vigorous physical activity (MVPA) breaks throughout the school day. Nine classrooms at one elementary-middle school in Detroit, MI (student demographics: 79% Hispanic; 80% on free/reduced lunch; 31% prevalence of asthma and asthma-like symptoms) participated in this 20-week intervention. Asthma status was self-reported via the International Study of Asthma and Allergies in Childhood (ISAAC) Video Questionnaire in conjunction with nurse documentation. PA participation, exercise intensity, and asthmatic symptom occurrence were assessed via direct observation. Students accumulated approximately 17 min of activity per day during PA breaks. Compared to students without asthma, a higher percentage of students with asthma participated in MVPA (asthma: 52.9% ± 1.2%; non-asthma: 46.2% ± 0.8%; p = 0.01), a lower percentage participated in light PA (asthma: 25.9% ± 1.0%; non-asthma: 30.1% ± 0.7%; p = 0.01), and sedentary time during activity breaks (asthma: 21.2% ± 0.9%; non-asthma: 23.8% ± 0.7%; p = 0.02). Out of 294 observations, six instances of asthmatic symptoms (coughing) were observed in students with asthma 5-15 min following the PA break. Symptoms self-resolved within 15-min of the PA break and did not result in sustained exercise-induced bronchoconstriction. Classroom-based interventions that incorporate short intermittent bouts of PA represent safe exercises for children with asthma and may help to reduce PA disparities in this clinical population.

Influence of the Home Environment on Physical Activity Behaviors in African American Youth.

Background: This study examined the relationships between components of the home environment and physical activity (PA) behaviors among African American adolescents. Methods: A community-based sample of 99 African American parent-child dyads (62% girls; 42% overweight/obese, 15.0 ± 0.2 years) were included in this analysis. The home environment (PA equipment, family support for PA, and internet access) was evaluated using the Health and Environment Survey. Child PA was measured objectively using accelerometry. Data collection occurred between 2014 and 2016. Results: Internet access was associated with 29 fewer minutes of light physical activity [p = 0.011, ß = -29.25 ± 11.28 (95% confidence interval: -51.65 to -6.86)], 9 fewer minutes of moderate-to-vigorous physical activity [p = 0.045, ß = -9.10 ± 4.48 (-17.98 to -0.21)], and 38 fewer minutes of total PA (TPA) [p = 0.006, ß = -38.35 ± 13.38 (-65.62 to -11.08)]. Family support was associated with 2 minutes of TPA [p = 0.044, ß = 2.25 ± 1.10 (-1.97 to 3.19)]. PA equipment was not significantly associated with greater PA (all p's > 0.05). Conclusions: These findings suggest that home internet access may hinder participation in PA among African American adolescents. Future research should continue to identify barriers in the home environment that contribute to physical inactivity among African American adolescents.

Racial differences in psychological stress and insulin sensitivity in non-Hispanic Black and White adolescents with overweight/obesity.

INTRODUCTION: Racial differences in type 2 diabetes risk persist among non-Hispanic Black and non-Hispanic White adolescents with overweight/obesity; however, the role of psychological stress in this disparity is less clear. PURPOSE: To examine racial differences in the association between psychological stress, insulin sensitivity (Si), acute insulin response to glucose (AIRg), and disposition index (DI) among non-Hispanic Black and non-Hispanic White adolescents with overweight/obesity. METHODS: Ninety-six adolescents (60% female; 51% non-Hispanic Black; 16.6 ± 1.8 years of age) with overweight/obesity (BMI percentile ≥ 85th percentile) were included in this analysis. Psychological stress was assessed using the 14-item Perceived Stress Scale. Glucose and insulin data from an intravenous glucose tolerance test was modeled to obtain Si, AIRg, and DI. Multivariable linear regression models were used to examine the association between race, psychological stress and metabolic outcomes (Si, AIRg, and DI). RESULTS: Race was a significant predictor of log-AIRg and log-DI (ps < 0.05) independent of all covariates in the main effect models. Lower Si (pinteraction = 0.014) and DI (pinteraction = 0.012) was also observed among Black adolescents who reported higher stress levels, whereas higher Si and DI was observed among non-Hispanic White adolescents reporting higher stress in the race interaction models. Race however, did not moderate the association between psychological stress and AIRg (p > 0.05), nor was stress associated with Si, AIRg, or DI ("p" "s" > 0.05) across all other models. CONCLUSIONS: Psychological stress may play an important and distinct role in shaping racial differences in type 2 diabetes risk among adolescents with overweight/obesity. Additional research is needed to understand the long-term effects of psychological stress on metabolic health among non-Hispanic Black and non-Hispanic White adolescents with overweight/obesity.