Kinematic effects of a short-term fatigue protocol on punt-kicking performance

The punt kick is a fundamental skill used in several team sports; however, there has been a lack of research on how fatigue affects its technique. The purpose of this study was to determine the effects of short-term fatigue on punt-kicking performance. Eight elite and sub-elite Australian Football players performed maximal drop punt kicks on their preferred leg prior to, during and after a match-specific fatigue protocol. Optotrak Certus collected kinematic data from kick foot toe-off until ball contact. Repeated-measures analysis of variance showed a significant increase in 20 m sprint times after each short-term protocol, indicating fatigue. Foot speed did not significantly change with fatigue; however, increases in the range of motion at the pelvis and kicking thigh, along with increases in kicking thigh angular velocity, occurred. For the support leg, maximum knee flexion angular velocity increased while there was greater flexion found at the knee and hip, and greater range of motion at the knee. Players are able to make kinematic adaptations in order to maintain foot speed while punting for maximal distance after short-term efforts.     

Young Children’s Mathematical Learning From Intelligent Characters

Children’s math learning (N = 217; M_age = 4.87 years; 63% European American, 96% college-educated families) from an intelligent character game was examined via social meaningfulness (parasocial relationships [PSRs]) and social contingency (parasocial interactions, e.g., math talk). In three studies (data collected in the DC area: 12/2015–10/2017), children’s parasocial relationships and math talk with the intelligent character predicted quicker, more accurate math responses during virtual game play. Children performed better on a math transfer task with physical objects when exposed to an embodied character (Study 2), and when the character used socially contingent replies, which was mediated by math talk (Study 3). Results suggest that children’s parasocial relationships and parasocial interactions with intelligent characters provide new frontiers for 21st century learning.     

Publication trends for single-case methodology in school psychology: A systematic review

Single-case design (SCD) is a research methodology that may be utilized to establish the presence of a functional relation between an independent and dependent variable. Recent research has found the design to frequently be used within school psychology in the evaluation of intervention procedures. However, the overall prevalence of the design within the broader school psychology literature is unknown. As such, the purpose of the current review was to identify trends in the use of SCD within school psychology publications. Furthermore, the review sought to identify institutions and journals that most frequently published SCD. Finally, the review sought to evaluate trends in experimental rigor of published SCD. Twelve journals were examined, with all publications since their inception reviewed and classified by publication type. Results of the review indicated that SCD was the least frequently published article type. However, data indicate an increase in the prevalence and rigor of the design in recent years. Whereas some journals and institutions were found to have steady rates of SCD publications, others were found to have recent increases in the publication of the design. Implications of findings as they pertain to practitioner practice and adoption of evidence-based practice are described.     

Hitting the vault board: implications for vaulting take-off--a preliminary investigation

Gymnastics vaulting relies on a specialized take-off board for propulsion during the take-off phase of the vault. There is little information on the vault board and its behaviour. The aim of this study was to characterize the behaviour of the vault board during handspring drill take-offs of young male gymnasts (n = 36). The side of the top surface of the vault board and the wooden base were marked with three reflective markers, placed at the end of the vault board nearest the vault table and the centres of the two rearmost coil springs. The vault board surface was divided into two areas, rear and middle, based on marker location. The gymnasts' groups were determined from the location of the gymnast's lateral malleolus at vault board contact. Landings with the malleolus directly above or behind the rearmost marker were considered rear landings; landings with the malleolus forward of the rearmost marker were considered middle landings. Marker movements were automatically digitized and the right malleolus was hand digitized at 120 Hz. The maximum vertical displacement, vertical deflection time, and vertical velocity at take-off of the vault board markers did not differ statistically between board contact groups (all p > 0.05). The lateral malleolus velocity components also did not differ between board contact groups. Some low to moderately strong correlations were observed between the various marker displacements, durations and take-off velocities. Modest correlations were obtained between board markers and right malleolus velocities. The results indicate that foot contact on the vault board, as defined here, did not result in differences in board marker behaviour or right lateral malleolus velocities. This information does not support the idea that vault board contacts at the rear of the vault board are worse than contacts near the middle of the vault board. More research is needed to ascertain the role of the vault board's vibration characteristics to whole body actions that are observed in the subsequent preflight phase.     

Is the disease spreading? A case study of the American Outlaws

The American Outlaws, a supporter group for the men’s and women’s National Soccer Teams for the United States, has been scarcely examined in academic literature. This research began to fill this void by analysing articles written about the American Outlaws via a textual analysis. This research uncovered if the American Outlaws were exhibiting behaviours similar to those found in hooligan groups, or firms abroad. Texts that were analysed included members’ experiences (current or former, male or female) and reports of the American Outlaws during competitions or group gatherings in various settings. Themes from this analysis included organizational development, passion, non-aggressor violence, beer, and harassment. The implications of these results are discussed in further detail. This article concludes with implications for the American Outlaws organization in its current state, as well as a call for the leadership committee within the American Outlaws to reduce the fraternity atmosphere associated with the organization.     

Building a low‐cost gross anatomy laboratory: A big step for a small university

This article illustrates details of the planning, building, and improvement phases of a cost‐efficient, full‐dissection gross anatomy laboratory on a campus of an historically design‐centric university. Special considerations were given throughout the project to the nature of hosting cadavers in a building shared amongst all undergraduate majors. The article addresses these needs along with discussion of relevant furnishings and infrastructure that went into the creation of a fully outfitted gross anatomy laboratory (ten cadavers) completed within a significantly constrained timeline and $210,000 budget. Anat Sci Educ. © 2010 American Association of Anatomists.     

Multi-informant assessment of treatment integrity in the classroom

Assessing the degree to which interventions are implemented in school settings is critical to making decisions about student outcomes. School psychologists may not be available to regularly conduct observations of intervention implementation, however, their data may be used alongside other methods for multi-informant assessment. Teacher self-report is a commonly used and feasible assessment method. Students have been trained to implement interventions with their peers in instances where traditional adult interventionists were unavailable. This exploratory study investigated the accuracy with which classroom teachers and middle and high school students assessed implementation of the Good Behavior Game and the impact of performance feedback on their accuracy. Results indicated that most students and teachers were able to provide accurate assessments of treatment integrity compared to researcher direct observation; however, some required performance feedback to do so. These findings suggest that multi-informant assessment may be a feasible and accurate way for school psychologists to collect formative treatment-integrity data in the classroom. Limitations and future directions are discussed.     

Deconstructing and developing the attitudes of primary school readers

Improving student attitudes toward reading remains of particular concern to elementary school teachers. The development of students' demeanour toward reading is as important, if not more so, than skill enhancement. Unless reading attitudes are maintained and even bolstered, content instruction will not always reach the learner, nor will students use reading as an independent learning tool. Categorising attitudes is much more dynamic than grouping by those who like or dislike reading. Through discovery‐oriented, naturalistic inquiry, data were collected and analysed, resulting in emergent themes of student attitudes toward reading. This article will discuss six clusters of reading attitudes/behaviours found in elementary schools, and provide practical teacher tips to be used for reading development with each type of learner.     

EVALUATION OF THE CLASS PASS INTERVENTION FOR TYPICALLY DEVELOPING STUDENTS WITH HYPOTHESIZED ESCAPE‐MOTIVATED DISRUPTIVE CLASSROOM BEHAVIOR

The aim of this study was to evaluate the Class Pass Intervention (CPI) as a secondary intervention for typically developing students with escape‐motivated disruptive classroom behavior. The CPI consists of providing students with passes that they can use to appropriately request a break from an academic task to engage in a preferred activity for preset amount of time. In addition, students are incentivized to not use the class passes by continuing to engage in the academic task and instead exchanging them for a preferred item or activity. Using an experimental single‐case withdrawal design with replication through a concurrent multiple‐baseline across‐participants design, the CPI was shown to reduce disruptive behavior and increase academic engagement in three students who engaged in hypothesized escape‐motivated behavior. Results also revealed that the effects of the CPI were maintained at a two‐week follow‐up probe and consumers found it to be acceptable. The limitations and implications of the findings for future research on effective classroom‐based interventions are discussed.     

Effective body water and body mass changes during summer ultra-endurance road cycling

Because body mass change (ΔM_b) does not represent all water losses and gains, the present field investigation determined if (a) ΔM_b equalled the net effective body water change during ultra-endurance exercise and (b) ground speed and exercise duration influenced these variables. Thirty-two male cyclists (age range, 35–52 years) completed a 164-km event in a hot environment, were retrospectively triplet matched and placed into one of three groups based on exercise duration (4.8, 6.3, 9.6 h). Net effective body water loss was computed from measurements (body mass, total fluid intake and urine excreted) and calculations (water evolved and mass loss due to substrate oxidation, solid food mass and sweat loss), including (ΔEBW_gly) and excluding (ΔEBW) water bound to glycogen. With all cyclists combined, the mean ΔM_b (i.e. loss) was greater than that of ΔEBW_gly by 1200 ± 200 g (P = 1.4 × 10^–18), was similar to ΔEBW (difference, 0 ± 200 g; P = .21) and was strongly correlated with both (R² = .98). Analysis of equivalence indicated that ΔM_b was not equivalent to ΔEBW_gly, but was equivalent to ΔEBW. Due to measurement complexity, we concluded that (a) athletes will not calculate the effective body water calculations routinely and (b) body mass change remains a useful field-expedient estimate of net effective body water change.