A retrospective comparison of the biceps femoris long head muscle structure in athletes with and without hamstring strain injury history.

INTRODUCTION: Hamstring strain injuries (HSI) and re-injuries are endemic in high-speed running sports. The biceps femoris long head (BFlh) is the most frequently injured muscle among the hamstrings. Structural parameters of the hamstring muscle are stated to be susceptible to strain injuries at this location. This retrospective study targeted comparing the BFlh's structural parameters between previously injured and uninjured athletes. METHODS: Nineteen male athletes with previous BFlh strain injury history and nineteen athletes without former lower extremity injury history were included in this study. Fascicle length, mid-muscle belly and distal musculotendinous (MTJ) passive stiffnesses of the biceps femoris long head (BFlh) were examined via b-mode panoramic ultrasound scanning and ultrasound-based shear-wave elastography. Parameter comparisons of both legs within and between athletes with and without injury history were performed. RESULTS: Comparison of the BFlh fascicle length between the injured leg of the injured group and the legs of the controls revealed a trend to shorter fascicle lengths in the injured leg (p = 0.067, d = -0.62). However, the mid-muscle belly passive stiffness of the BFlh was significantly higher in the injured legs (p = 0.009, d = 0.7) compared with the controls. Additionally, the distal MTJ stiffness was much higher in the previously injured legs compared with controls (p < 0.001, d = 1.6). CONCLUSIONS: Outcomes support the importance of BFlh properties related to stiffness, and fascicle length for injury susceptibility in athletes. Future prospective studies should determine whether the higher stiffness in the injured athletes is a cause or consequence of the HSI. Physical therapy and rehabilitation programmes after HSI should focus on BFlh muscle properties i.e., elasticity and fascicle length for reducing re-injury and increasing sports performance.

The Association Between Sexual Initiation and Membership in Dyadic Profiles of Perceived Shared Power.

There is scarce empirical evidence examining whether sexual initiation and power are associated with each other. Utilizing latent profile analyses, we examined in a nationally representative sample of US newlywed heterosexual couples (N = 1,948 couples) whether wives' and husbands' sexual initiation patterns and satisfaction with these patterns were associated with membership in different profiles of wives' and husbands' perceptions of shared relational power while accounting for both partner's satisfaction with sexual frequency. We found four profiles of wives' and husbands' perceptions of power. The most common profile was when both wives and husbands perceived high levels of power compared to other profiles, but wives had significantly higher reports of perceived power than husbands (High Power, Wife Higher; 40.8%). Husbands' sexual initiation patterns were not associated with profile membership. Wives who reported equal sexual initiation patterns had a higher probability of being in the High Power, Wife Higher profile compared to the Wife Low Power, Husband Moderate Power profile. Both wives' and husbands' satisfaction with sexual initiation patterns were associated with profile membership. Wives and husbands that were satisfied with sexual initiation patterns had a higher probability of being in the High Power, Wife Higher profile compared to the profile where both wives and husbands had high perceptions of shared relational power compared to other profiles, but their scores were not significantly different from each other (High Power, Equal).

Emotion-Driven Eating and Overeating Among Fourth Graders: The Roles of Body Image, Academic Achievement, and Peer and School Factors.

BACKGROUND: Eating patterns such as breakfast consumption and fruit and vegetable intake have been associated with academic achievement and cognitive function. METHOD: The purpose of this study was to learn more about psychological (emotion-driven eating) and behavioral (over-eating) eating patterns and motives, and the roles of body image, academic achievement (reading and math), and social supports (peer acceptance and school attachment), among 378 fourth-grade students (55% boys) from 14 classrooms across 6 schools within a large Midwestern urban area. RESULTS: Results were analyzed through a 2-group (male and female) path analysis. Boys' overeating (R2 = 9%) was not significantly predicted. Their emotional eating (R2 = 22.2%) was negatively, significantly predicted by peer acceptance and interaction of peer acceptance and school attachment. Girls' overeating (R2 = 13.6%) was negatively, significantly predicted by positive body image. Girls' emotional eating (R2 = 24.1%) was negatively significantly predicted by positive body image, math scores, and peer acceptance. CONCLUSIONS: Boys' and girls' eating patterns are differentially affected by their school experiences.

The Relationship of Resilience, Self-Compassion, and Social Support to Psychological Distress in Women Collegiate Athletes During COVID-19.

Given how COVID-19 had caused significant increases in collegiate athletes' psychological distress, we examined the extent to which such distress may have been ameliorated by the athletes' psychosocial resources (e.g., resilience). We used structural equation modeling to examine the direct and indirect relationships of resilience, self-compassion, and social support to women collegiate athletes' (N = 3,924; 81.2% White) psychological distress; athletes completed measures of these constructs from mid-April to mid-May 2020. Analyses revealed significant direct effects: More supported (ß = -0.12 to -0.19), self-compassionate (ß = -0.48 to -0.53), and resilient (ß = -0.21 to -0.35) athletes experienced less psychological distress (R2 = .61-.65). Further, self-compassion and social support were related indirectly (and inversely) to psychological distress through higher levels of resilience. These psychosocial resources appear to have played a positive role in how athletes coped with the pandemic, being associated with less psychological distress. These findings have application beyond the pandemic, providing direction for how sport psychology professionals may assist athletes in maintaining their well-being.

Sleep disturbances and depression are bidirectionally associated among college student athletes across COVID-19 pandemic exposure classes.

College athletes may be vulnerable to sleep disturbances and depression during the COVID-19 pandemic as a result of large shifts in social and athletic obligations. In a national sample of college athletes, we examined the associations between sleep disturbances and depression across two timepoints, using COVID-19 exposure as a moderator. Data were collected from 2098 NCAA Division I, II, and III college athletes during two timepoints, from April 10 to May 23, and from August 4 to September 15, 2020. First, a latent class analysis was conducted with five indicators of levels of COVID-19 exposure to determine different exposure profiles. Second, to examine the directionality of associations between sleep disturbance and depression, a cross-lagged panel model was added to the latent class membership structural equation model; this allowed for testing of moderation by COVID exposure class membership. Four highly homogeneous, well-separated classes of COVID-19 exposure were enumerated: Low Exposure (57%); Quarantine Only (21%); High Other, Low Self Exposure (14%); and High Exposure (8%). COVID-19 exposure class membership did not significantly moderate associations between sleep disturbances and depression. However, student athletes significantly differed in T2 depression by their COVID-19 exposure class membership. Depression and sleep disturbances were positively correlated at both timepoints (r T1 = 0.39; r T2 = 0.30). Additionally, cross-lagged associations were found such that T2 depression was associated with T1 sleep disturbances (ß = 0.14) and vice versa (ß = 0.11). These cross-lagged associations were not significantly affected by athletes' level of COVID-19 exposure during the beginning of the pandemic.

Predicting Breastfeeding Intentions: A Test and Extension of the Theory of Normative Social Behavior with African American Social Identity.

Breastfeeding is a health promoting social behavior but statistics suggest a persistent disparity of lower rates among African American mothers. The Theory of Normative Social Behavior (TNSB) explains when and how norms influence behaviors, but has produced inconsistent results with respect to proposed moderators group identity and injunctive norms (IN), limiting its predictive value in diverse cultural groups. Cultural norms are one of many influences on breastfeeding behaviors, yet little is known about their mechanisms of influence. The TNSB has not been tested in the breastfeeding context or within an exclusively African American cultural group. Given this knowledge gap, a survey of 528 African American mothers in the Washington, D.C. area was conducted to test the moderating effects of IN and subjective norms (SN) and social identity on the descriptive norms (DN) to intentions relationship as predicted by the TNSB. Structural equation modeling was used to show that when controlling for education and breastfeeding history, norms significantly predicted 26.4% of the variance in breastfeeding intentions. SN and DN interacted negatively to enhance breastfeeding intentions. Latent profile analysis using ethnic pride, collectivism, and religiosity scales detected four profiles of African American social identity. Social identity profile membership was a significant moderator on the DN to intentions pathway in the structural equation model. Profiles with the highest ethnic pride were significantly influenced by DN to intend to breastfeed. Implications from this study for public health intervention and communication messaging are discussed.

The Influence of Instructor Behaviors and the Perceived Motivational Climate on Undergraduate Students' Experiences in College STEM Laboratories.

Biology laboratory instructors play a key role in creating an optimal environment where college students try hard and enjoy their classroom experiences. This study used achievement goal perspective theory to examine the influence of instructor behaviors on science, technology, engineering, and mathematics (STEM) students' perceptions of the motivational climate (caring, task, ego) and their adaptive (i.e., effort, enjoyment, performance self-esteem, and social self-esteem) and maladaptive (i.e., shame) experiences in the biology laboratory setting. Students (N = 563; women, 65%; men, 35%) enrolled in biology laboratory courses voluntarily completed a survey during the final week of the semester. Results of two structural equation modeling analyses across gender and racial identities made two important contributions to the STEM higher education literature: 1) when instructors engaged in effective teaching behaviors, students were more likely to perceive a caring/task-involving climate and, in turn, report adaptive motivational responses (i.e., increased effort, enjoyment, self-esteem; decreased shame); and 2) neither gender nor race moderated the measurement of the latent parameters. This research has important pedagogical implications, as teaching assistants could be trained to engage in these effective behaviors to optimize students' STEM learning experiences.

Self-compassion, body satisfaction, and disordered eating symptoms in male collegiate athletes: A longitudinal analysis.

Male athletes are a subpopulation at risk for developing eating disorders and disordered eating concerns, primarily due to the presence of socioculturally-based factors, including body dissatisfaction. Self-compassion may alleviate this risk by improving body satisfaction. To date, no study has examined longitudinally self-compassion's effect on body satisfaction and, ultimately, disordered eating in male athletes. Across two time points separated by four months, we assessed self-compassion, body satisfaction, and disordered eating in 454 male collegiate athletes. Through cross-lagged, panel analysis, after controlling for the Time 1 scores, we determined that: (a) Time 1 self-compassion was neither directly related to Time 2 body satisfaction (ß = 0.02, p = .755), nor indirectly to Time 2 disordered eating (ß = -0.002, 95% BCaCI [-0.028, 0.014]), and (b) Time 1 body satisfaction directly predicted Time 2 disordered eating (ß = -0.12, p < 0.05). Our findings extend past research, demonstrating that body satisfaction is a primary antecedent to disordered eating among male athletes. However, the proposed effects of self-compassion on the body satisfaction to disordered eating relationship were not supported and may be dependent on gender and athlete status.

Drinking among college student athletes during the COVID-19 pandemic.

Objective: To investigate demographics, sport type, athletic identity, and COVID-19 sport season cancelation in relation to alcohol consumption among college student athletes shortly after the pandemic emerged. Participants: College student athletes recruited from U.S. athletic departments. Methods: Survey data were collected from 5,915 college student athletes in April/May 2020. Results: Being female, Latinx, and in a relationship were associated with lower alcohol consumption. Among males, team sport participation was related to greater alcohol consumption. Among females, athletic identity was inversely related to drinking, which was moderated by sport type, such that alcohol consumption was lower as athletic identity strengthened in individual (vs. team) sport athletes. However, we did not find a relationship of COVID-19 sport season cancelation with drinking. Conclusions: Our gender-specific findings are novel and generalizable based on a large, national sample of college student athletes, and may inform strategies for alcohol consumption education among college team sport athletes.

A Model of Perfectionism, Moral Disengagement, Altruism, and Antisocial and Prosocial Behaviors in Wheelchair Athletes.

Two forms of perfectionism were examined in the present study to see whether they predicted prosocial and antisocial behaviors in sport through moral disengagement and altruism in a sample of 327 wheelchair basketball and rugby athletes (M = 33.57 years, SD = 10.51; 83% male). Using structural equation modeling, the following significant direct and indirect effects were found. First, perfectionistic strivings positively predicted perceived prosocial behaviors and altruism. Second, perfectionistic concerns negatively predicted altruism and prosocial behaviors and positively predicted moral disengagement. Third, antisocial behaviors were positively predicted by moral disengagement and altruism. Furthermore, perfectionistic concerns indirectly predicted antisocial behaviors positively through moral disengagement and negatively through altruism. Finally, perfectionistic strivings positively predicted antisocial behaviors through altruism. Results provided partial support for the role of perfectionism in predicting prosocial and antisocial behaviors through moral disengagement among athletes with a disability.

College Student-athletes' COVID-19 Worry and Psychological Distress Differed by Gender, Race, and Exposure to COVID-19-related Events.

PURPOSE: The purpose of this study was to determine the prevalence of National Collegiate Athletic Association (NCAA) student-athletes' exposure to COVID-19-related events (e.g., canceled season, diagnosed with COVID) and their psychological distress in April/May 2020. METHODS: The link to the online survey was emailed to NCAA student-athletes by the NCAA Student Athlete Advisory Council and the athletic departments of 80 NCAA institutions. In April-May of 2020, student-athletes (N = 5915; women = 3924) completed the online survey once. The survey included measures of their psychological distress, COVID-19 worry, and their exposure to different COVID-19-related events. To examine differences in exposure to COVID-related events by racial, ethnicity, and gender identities, we conducted logistic regressions. A path analysis examined relationships between COVID-related events, COVID-19 worry, and psychological distress for men and women. RESULTS: Student-athletes' exposure to COVID-19 events differed significantly by gender, race, and ethnicity. In addition, 58.7% of women's and 54.5% of men's psychological distress variance was explained by the path model and mostly by their COVID-related worry. Student-athletes' stress was directly related to the changes that occurred in class delivery (i.e., online format) and indirectly by being quarantined. Men's psychological distress was also related through worry by their sport season being canceled. DISCUSSION: The general uncertainty and worry about COVID individuals experienced at the beginning of this pandemic primarily explained the athletes' high levels of psychological distress. As COVID-19 continues to cause quarantines and changes educational experiences, the worry and psychological distress of college students are likely to continue.

Development of a School Health Policy Implementation Survey: A Delphi Study.

Data on school health policy implementation are limited due to the absence of a validated measurement tool. The purpose of this study was to create and pilot a school health policy implementation survey. A modified, four-round Delphi process was used to achieve consensus on content and format of the survey. The final 76-item survey was piloted in 655 schools with a return rate of 57.1% (n = 378). Seven schools participated in environmental audits. Based on the audits, survey responses represented an accurate description of school practices for 84.2% (n = 64) of questions. The remaining 15.8% (n = 12) of survey items were eliminated or revised. This measurement tool begins to fill the research gap between the evaluation of written school health policy and implementation. Further, this tool may be used by school nurses in alignment with the Framework for 21st Century School Nursing Practice.

Nutrition Supports Deconstructed and Disrupted: An Evaluation of a Multilevel School-Based Intervention during the Time of COVID.

The Best Food Forward (BFF) project aims to provide multiple nutrition supports and interventions to improve family food security (FS) and health outcomes associated with FS within two metropolitan school districts. A quasi-experimental time-series design guided a multilevel evaluation for BFF through surveys, biometric screenings, focus groups, and observations among a random sample of caregiver-child dyads. FS, utilization of school meal programs, and nutrition behaviors were observed and analyzed at three time points: preintervention, postintervention pre-COVID-19, and postintervention post-COVID-19. Participants included 122 parents and 162 youth. Families reported (1) an income less than $35,000 annually (48.8%) and (2) a COVID-19-related job loss (36.9%). Parents used Supplemental Nutrition Assistance Programs or Women, Infants, Children benefits prior to (51.1%) and following COVID-19 (50.0%). No significant differences in FS were found. RM-ANOVA indicated an increase in breakfast consumption at home and a decrease in use of the school breakfast program (F(1.78, 74) = 19.64, p < 0.001, partial η2 = 0.21) and school lunch program (F(1.51, 74) = 23.30, p < 0.001, partial η2 = 0.24). Rates of FS and eating behaviors did not change significantly over time. Correlations of program usage and eating behaviors demonstrate the importance of promoting participation in school meal programs. BFF may have prevented significant decreases in FS during COVID-19.

Effects of a Comprehensive School Health Program on Elementary Student Academic Achievement.

BACKGROUND: Improving the academic achievement of youth in the United States is an area of interest and a critical indicator of the future success of the youth. The purpose of this study was to examine the impact of a comprehensive school physical activity and healthy eating program on 5th-grade students' academic achievement, specifically reading and math. METHODS: Overall, 628 (intervention: 377, 54% girls; comparison: 251, 49% girls) 5th-grade children participated across the 6 schools in a year-long comprehensive health intervention, completing curriculum-based academic achievement measures at 2 time-points. RESULTS: Results showed that even after controlling for class clustering, age, sex, race, and T1 reading and math variables, students' T2 reading and math achievement were significantly higher in the intervention group than the comparison group. CONCLUSIONS: Comprehensive health programming can enhance the health and academic achievement of youth.

A novel item-allocation procedure for the three-form planned missing data design.

We propose a new method of constructing questionnaire forms in the three-form planned missing data design (PMDD). The random item allocation (RIA) procedure that we propose promises to dramatically simplify the process of implementing three-form PMDDs without compromising statistical performance. Our method is a stochastic approximation to the currently recommended approach of deterministically spreading a scale's items across the X-, A-, B-, and C-blocks when allocating the items in a three-form design. Direct empirical support for the performance of our method is only available for scales containing at least 12 items, so we also propose a modified approach for use with scales containing fewer than 12 items. We also discuss the limitations of our procedure and several nuances for researchers to consider when implementing three-form PMDDs using our method. ● The RIA procedure allows researchers to implement statistically sound three-form planned missing data designs without the need for expert knowledge or results from prior statistical modeling. ● The RIA procedure can be used to construct both "paper-and-pencil" questionnaires and questionnaires administered through online survey software. ● The RIA procedure is a simple framework to aid in designing three-form PMDDs; implementing the RIA method does not require any specialized software or technical expertise.

Building healthy communities: A comprehensive school health program to prevent obesity in elementary schools.

Obesity among children is highly prevalent and can lead to risk factors for chronic disease in adulthood. Key organizations have called on schools to play a larger role by increasing children's physical activity and nutrition by adopting an overall culture of health. This study examined the impact of a socioecological theory driven school-wide nutrition and physical activity intervention on 5th graders' central adiposity and obesity level. In 2015-2016, in the Midwest region of U.S., four treatment and two control schools, including 628 (377 treatment) 5th grade children participated in an eight-month intervention. Children in the treatment schools participated in a comprehensive healthy school transformation program consisting of six components. Waist-to-Height Ratio (WHtR) and Body Mass Index (BMI) was calculated and used as the measure of obesity. ANCOVA revealed a significant difference in WHtR among treatment and control groups at time two (T2) FMI(1,6148.14) = 4.43, p = .035, R2 = 0.64, R2Treament = 0.01, with no significant differences based on age, sex, and race. Additionally, the ANCOVA for BMI revealed a marginally significant lower BMI among the treatment than comparison group students FMI(1, 614) = 3.575, p = .059, R2 = 0.01 (Mdiff = -0.23, 95%CI upper boundary: -0.03). The healthy school intervention led to significant differences in obesity levels, regardless of age, sex, or race, across the 8-month program between 5th grade children in treatment and non-treatment schools. This supports the ability of schoolwide programs to significantly and positively impact student health and chronic disease prevention.

Physical Education Students' Ownership, Empowerment, and Satisfaction With PE and Physical Activity.

Individuals experiencing a highly caring, task-involving, and low ego-involving exercise climate have reported greater ownership in exercise class and empowerment to exercise in general. PURPOSE: This study examined the relationship between ownership and empowerment in exercise, with 2 context-specific outcomes, satisfaction with physical education (PE) and physical activity, respectively. Given the mission of PE to foster individuals' lifelong physical activity habit, the perceptions of high school students were collected for this study. Ownership in exercise was hypothesized to be significantly, positively correlated with students reporting satisfaction in PE more than their satisfaction in physical activity, whereas empowerment in exercise was hypothesized to be more strongly, positively correlated with students' physical activity satisfaction. A second purpose of this study was to test the measurement quality of the updated Empowerment in Exercise Scale (EES; now 13 items). METHOD: High school students (N = 502, 43% female) in a Midwestern U.S. school district completed a survey. RESULTS: Confirmatory factor analysis supported the internal measurement structure of the EES (λ = .62-.91; McDonald's omega = .89) across student gender (strong invariance). Additionally, the structural equation modeling analysis revealed only 1 parameter moderated by the students' gender (latent mean of ownership). The hypotheses were supported, such that ownership in exercise was more strongly correlated with PE satisfaction (r = .87) and empowerment in exercise had a stronger correlation with physical activity satisfaction (r = .92). CONCLUSION: These results support the beneficial effect a satisfying experience in PE can have on students' satisfaction with physical activity outside of school.

On the joys of missing data.

We provide conceptual introductions to missingness mechanisms--missing completely at random, missing at random, and missing not at random--and state-of-the-art methods of handling missing data--full-information maximum likelihood and multiple imputation--followed by a discussion of planned missing designs: Multiform questionnaire protocols, 2-method measurement models, and wave-missing longitudinal designs. We reviewed 80 articles of empirical studies published in the 2012 issues of the Journal of Pediatric Psychology to present a picture of how adequately missing data are currently handled in this field. To illustrate the benefits of using multiple imputation or full-information maximum likelihood and incorporating planned missingness into study designs, we provide example analyses of empirical data gathered using a 3-form planned missing design.

Comparison of two twelve week off-season combined training programs on entry level collegiate soccer players' performance.

Olympic-style lifts (OSL) and plyometric exercises (PE) are frequently combined with traditional resistance training (TRT) to improve athletic performance. The goal of this study was to directly compare the performance effect of TRT (30 minutes) combined with either OSL or nondepth-jump PE (15 minutes) on entry level competitive collegiate athletes. Ten female and 5 male competitive soccer players, divided into 2 groups, completed 12 weeks of tri-weekly training during their off-season. Countermovement vertical jump, 4 repetition maximum squat, 25-m sprint, and figure-8 drill on a 5-dot mat were conducted pre-, mid-, and postintervention. Significant improvements were made by both groups in each performance parameter over the 12-week period (p < 0.05), with no significant differences found between the training groups. Although these training modalities may achieve their results through slightly different mechanisms, the performance-related improvements may not be significantly different for entry-level collegiate athletes with little resistance training experience.