Predictors of Swimming Ability among Children and Adolescents in the United States

Swimming is an important source of physical activity and a life skill to prevent drowning. However, little research has been conducted to understand predictors of swimming ability. The purpose of this study was to understand factors that predict swimming ability among children and adolescents in the United States (US). This was a cross-sectional survey conducted between February and April of 2017 across five geographically diverse cities. Participants were accessed through the Young Christian Men’s Association (YMCA) and included parents of children aged 4–11 years old and adolescents aged 12–17 years old. Independent t-test, analysis of variance (ANOVA), and univariate and multivariate analyses were conducted. Several factors were significant (p ≤ 0.05) predictors of swimming ability and explained 53% of the variance in swimming ability. Variables that were positively associated with swimming ability included: ability of parent(s) to swim, child/adolescent age, a best friend who enjoys swimming, water-safety knowledge, pool open all year, and encouragement to swim from parent(s). Variables that were negatively associated with swimming ability included: fear of drowning, being African American, and being female. Interventions and programs to improve the swimming ability of children and adolescents could be developed with these predictors in mind

Does Measured School Quality Really Matter? An Examination of the Earnings-Quality Relationship

This paper examines the economic and empirical foundations of the aggregate evidence on the effect of schooling quality on earnings. A common framework is presented which nests all previous studies as special cases. We discuss two crucial identifying assumptions and test them. The first assumption is the absence of region of birth - region of resident interactions in the return to schooling. This rules out patterns of migration on the basis of realized earnings in the destination state. Both parametric and nonparametric versions of this hypothesis are tested. Using 1970, 1980 and 1990 Census data, it is decisively rejected. A second assumption is that log earnings equations are linear - or nearly linear in schooling. This assumption is false. We find that estimated earnings-quality relationships are sensitive to specification of the earnings function. When false linearity assumptions are relaxed, the only effect of measured schooling quality is on the returns for college graduates. The evidence for an aggregate earnings-quality relationship is weak once false empirical restrictions are relaxed.

Parents Shape their Children’s Physical Activity During Unstructured Recess Through Intrinsic Value the Children Possess

Parents beliefs processes has shown to relate to their children’s decisions making. Thus, grounded in the expectancy-value theory, the aim of this study was to examine parents’ role in shaping elementary school students’ beliefs and task values toward students’ school-time physical activity (PA) and their moderate-to-vigorous (MVPA) behavior during unstructured recess. A convenience sample of 115 (Mage = 10.12±1.81) children and their parents/guardians were recruited, and their expectancy-beliefs and attainment, utility, and interest values toward school-time PA were assessed. In addition, children’s MVPA during recess was measured using waist-attached accelerometers. Results showed that parents impacted children’s recess PA in different ways depending on children’s gender. In girls, parents’ beliefs and values transferred directly to the subsequent values of their children, whereas parents’ beliefs were the central predictors of boys’ beliefs and values. Parents’ intrinsic value moderated girls’ MVPA via the intrinsic value of the participants possessed (Z = 1.73, p = .010, 90% CI [.36, 2.93]), whereas parents’ beliefs moderated boys’ intrinsic value – MVPA relationship (Z = .78, p < .001, 90% CI [.39, 1.10]). This study suggests applying gender-specific strategies when trying to understand how beliefs and task values impact PA-related behaviors

An Investigation of Youth Swimming Skills and Method of Instruction

Drowning is a leading cause of death for US children. Teaching youth to swim in a formal setting from certified instructors is a consistent drowning prevention recommendation. Purposes for this investigation was to examine type of swimming instruction and ability to swim and compare to attitudes toward swimming among US youth. Methods were similar to previous USA Swimming studies in 2008 and 2010. YMCA associations in five cities were used to recruit adolescent survey respondents (n=600) aged 12-18 years. Results showed African American youth had the lowest rate of formal swimming instruction (29%) compared to White (32%) and Hispanic (42%) peers. Free/reduced lunch qualifiers reported a 23% formal instruction rate as compared to 43% of non-qualifiers. Formally instructed youth were 2.35 times more likely to report being a skilled swimmer (86%) compared to informally instructed youth (72%). Formal swimming instruction is recommended, and interventions need to target underserved populations

Velocity-space sensitivity of the time-of-flight neutron spectrometer at JET

The velocity-space sensitivities of fast-ion diagnostics are often described by so-called weight functions. Recently, we formulated weight functions showing the velocity-space sensitivity of the often dominant beam-target part of neutron energy spectra. These weight functions for neutron emission spectrometry (NES) are independent of the particular NES diagnostic. Here we apply these NES weight functions to the time-of-flight spectrometer TOFOR at JET. By taking the instrumental response function of TOFOR into account, we calculate time-of-flight NES weight functions that enable us to directly determine the velocity-space sensitivity of a given part of a measured time-of-flight spectrum from TOFOR

Relationship of edge localized mode burst times with divertor flux loop signal phase in JET

A phase relationship is identified between sequential edge localized modes (ELMs) occurrence times in a set of H-mode tokamak plasmas to the voltage measured in full flux azimuthal loops in the divertor region. We focus on plasmas in the Joint European Torus where a steady H-mode is sustained over several seconds, during which ELMs are observed in the Be II emission at the divertor. The ELMs analysed arise from intrinsic ELMing, in that there is no deliberate intent to control the ELMing process by external means. We use ELM timings derived from the Be II signal to perform direct time domain analysis of the full flux loop VLD2 and VLD3 signals, which provide a high cadence global measurement proportional to the voltage induced by changes in poloidal magnetic flux. Specifically, we examine how the time interval between pairs of successive ELMs is linked to the time-evolving phase of the full flux loop signals. Each ELM produces a clear early pulse in the full flux loop signals, whose peak time is used to condition our analysis. The arrival time of the following ELM, relative to this pulse, is found to fall into one of two categories: (i) prompt ELMs, which are directly paced by the initial response seen in the flux loop signals; and (ii) all other ELMs, which occur after the initial response of the full flux loop signals has decayed in amplitude. The times at which ELMs in category (ii) occur, relative to the first ELM of the pair, are clustered at times when the instantaneous phase of the full flux loop signal is close to its value at the time of the first ELM

Wiffle Ball: Turning a Backyard Favorite into an Appropriate Physical Education Unit

(Figure presented.) Wiffle ball is a classic game that has been played by people of all ages. Although there is a potential for inactivity due to limited opportunities to be actively engaged, increased activity time and overall development can occur through appropriate teaching methods. This article explores teaching wiffle ball using the sport education model. The potential for maximizing student learning and enjoyment are discussed, along with suggestions for setting up an appropriate season of play in physical education

Competition within Physical Education: Using Sport Education and Other Recommendations to Create a Productive, Competitive Environment

The use of Sport Education by physical education teachers to implement developmentally appropriate competitive activities is explored. The potential positive and negative consequences of competitive activities are discussed along with suggestions for teachers on how they can foster an appropriate competitive environment in physical education

A task analysis of a sport education physical education season for fourth grade students

Background: Previous research on Sport Education in which the participants were in the primary grades has focused on perceptions of fun and enjoyment as well as other components of motivation. To date, no study in Sport Education has examined the accomplishment of the various instructional and managerial tasks by upper primary school children, with the specific purpose of assessing the extent to which they are capable of successfully completing those tasks.Purpose: The purpose of this paper was to determine if upper primary aged children are able to work independently of the teacher and manage the numerous organizational tasks associated with Sport Education.Participants and data collection: The participants in this study were 40, fourth grade students from a school in the southeastern USA. Within both managerial and instructional systems, an ecological framework was used to examine the type of task, task explicitness, task duration, and also the extent to which students were compliant with the task demands.Data analysis: One-way analysis of variance was used to compare the percentage of lesson time for each task across the three season phases to determine if there was difference in the distribution of time over the course of a season.Findings and conclusion: Results indicated that as the season progressed, both managerial and instructional tasks became increasingly implicit and irrespective of the explicitness of task, compliance was high. It was concluded that students in the upper primary grades are indeed capable of successfully working independently of the teacher to achieve the goals of Sport Education

Analysis of teaching physical education to second-grade students using sport education

The purpose of this article was to provide an account of second-grade students and teachers, as well as a non-participant observer, after they participated in a season of Sport Education. For a total of 12 lessons, students participated in a season of developing throwing and catching and kicking skills. Interviews were conducted at the conclusion of the season to collect data from students and teachers regarding their experience. Field notes from the non-participant observer were also recorded. Although Sport Education is commonly introduced to students no earlier than the fourth grade, results revealed that there is the potential for introducing Sport Education to students as early as the second grade, a year in which the children typically turn eight years old. It is suggested that future studies of Sport Education with second-grade students could potentially enhance the learning experience of physical education students at the beginning of their school career