Does ball carrier technique influence tackler head injury assessment risk in elite rugby union?

The aim of this study was to use video evidence of tackles in elite level rugby union to identify ball carrier proficiency characteristics, for both lower and upper body tackles, that have a higher propensity to result in Head Injury Assessments(HIA) for the tackler. HIA (n = 74) and non-HIA tackles (n = 233) were categorised as either front-on or side-on upper or lower body tackles and scored for ball carrying proficiency characteristics. Side-on tackles included tackles from behind. A Chi-Square test (p < 0.05) and Cramer’s V were calculated to compare proficiency characteristics in HIA and non-HIA cases. For front-on upper body tackles, the ball carrier “fending into contact” (p < 0.01;ES = Moderate) and “explosiveness on contact” (p = 0.04;ES = Moderate) had a higher propensity to result in a HIA for the tackler. Fending into contact was exhibited in 47% of all upper body Tackle front-on HIA cases. The fending arm contacted the tackler’s head in 67% of these cases. Fending into contact can potentially be dangerous and therefore emphasis should be placed on safe fending during tackle-based training drills. Referees should also be alert to arm-to-head contact during the fend. Given the low number of ball carrier characteristics identified, focus should be placed on tackler characteristics for HIA prevention strategies.     

Utility of the BMI50 and BMI85 in the Assessment of Short- and Long-Term Change in BMI among Children: A Descriptive Analysis

Interpreting change in Body mass index (BMI) among youth by comparison to growth charts can be difficult because of maturation-related changes. The aim of this paper was to evaluate the utility of several alternative methods for assessing change in BMI among children. Participants included 1,615 children measured for stature and body mass in first grade and then again the following year. A total of 1,101 students were also assessed in eighth grade. Change was examined using BMI percentiles (BMI%), BMI z-scores, “Percent Over BMI” (BMI50), and the Healthy Fitness Zone continuum, also referred to as BMI85. Youth at lower BMI levels at baseline showed a positive mean change in BMI%/z-score, whereas those at higher levels at baseline showed a negative mean change in BMI%/z-score. These patterns were not seen with BMI50 or BMI85. Assessing change in weight by using BMI% may result in bias so researchers are encouraged to use BMI85 as a more appropriate approach.     

The accuracy of the 24-h activity recall method for assessing sedentary behaviour: the physical activity measurement survey (PAMS) project

Sedentary behaviour (SB) has emerged as a modifiable risk factor, but little is known about measurement errors of SB. The purpose of this study was to determine the validity of 24-h Physical Activity Recall (24PAR) relative to SenseWear Armband (SWA) for assessing SB. Each participant (n = 1485) undertook a series of data collection procedures on two randomly selected days: wearing a SWA for full 24-h, and then completing the telephone-administered 24PAR the following day to recall the past 24-h activities. Estimates of total sedentary time (TST) were computed without the inclusion of reported or recorded sleep time. Equivalence testing was used to compare estimates of TST. Analyses from equivalence testing showed no significant equivalence of 24PAR for TST (90% CI: 443.0 and 457.6 min · day^–1) relative to SWA (equivalence zone: 580.7 and 709.8 min · day^–1). Bland–Altman plots indicated individuals that were extremely or minimally sedentary provided relatively comparable sedentary time between 24PAR and SWA. Overweight/obese and/or older individuals were more likely to under-estimate sedentary time than normal weight and/or younger individuals. Measurement errors of 24PAR varied by the level of sedentary time and demographic indicators. This evidence informs future work to develop measurement error models to correct for errors of self-reports.     

A comparison of PPVT and SIT scores of young children

Eighty-four children from rural, urban, and suburban families were tested with the PPVT during a parent intervention program and with the SIT three years later as part of program evaluation. Results indicated the mean IQ on the SIT was substantially higher than expected based on the earlier PPVT scores. Sampling error and examiner error were excluded as explanations for the difference. These results suggest that the PPVT and SIT yield different scores and lack comparability.     

Directing an APA-approved school psychology program: Reasons,responsibilities, benefits

Directors of American Psychological Association (APA)-approved school psychology programs were surveyed to determine what responsibilities and benefits attend their role as training director; they also were asked to identify what they liked about serving in the training director role. Of 42 possible respondents, 33 (79%) returned usable questionnaires. Several responsibilities that all or virtually all of the training directors engaged in were identified (e.g., end-of-year APA report preparation); many respondents (61%) received release time from a class, but otherwise any benefits they received were few; and several important, motivating reasons (e.g., contributing to the future of school psychology) for functioning as a training director were identified. The implications of these findings for school psychology programs are briefly discussed.     

Where have all the skeptics gone?: Patterns of new age beliefs and anti-scientific attitudes in preservice primary teachers

Is belief in the paranormal alive and well within preservice teachers? In this survey 232 undergraduates (including 202 preservice primary teachers) were asked to react to a series of eight statements reflecting paranormal New Age beliefs rated earlier by a faculty panel as “totally unbelievable.” Overall, the students' modal response was expressed as “no particular opinion,” although for five of the eight items the modal respónse was “slightly believable.” It was found that only four students within the sample consistently rejected all eight statements. The frequency of ‘believers’ outnumbered the ‘skeptics’ in relation to three items (beliefs in UFOs, psychic seances, and Nostradamus). New Age factor scores were not significantly related to undergraduate faculty or year level, to holding anti-scientific beliefs or to a measure of TV-viewing, and did not correlate significantly with the personality scale Need for Cognition. Females evidenced higher New Age scores than males, but attitudes to science were unrelated to gender.