The Effects of Game Size on the Physical Activity Levels and Ball Touches of Elementary School Children in Physical Education

The purpose of this study was to determine the impact of participating in small (3v3), medium (6v6), and large-sided (12v12) games on the physical activity levels (pedometer step counts, accelerometer counts, and minutes of moderate-to-vigorous physical activity) and ball touches of children in physical education class. Participants were 29 students (55% boys and 45% girls) age 10-11 yrs. All participants wore a Yamax SW-200 pedometer and had their ball touches monitored and recorded. Twelve participants also wore an ActiGraph GT3X accelerometer. Repeated measure ANOVAs were computed to test for significant differences for each dependant variable with corresponding post hoc tests. Results indicated the 3v3 and 6v6 game conditions yielded significantly higher accelerometer counts and ball touches than the 12v12 condition. The 3v3 game condition also produced significantly higher ball touches than the 6v6 condition. These findings highlight the importance of utilizing smaller-sided games in physical education to promote increased involvement and physical activity

Stretched Too Thin?: The Relationship Between Insufficient Resource Allocation and Physical Education Instructional Time and Assessment Practices

With provisions in the Every Student Succeeds Act, attention to physical education (PE) programs in school will be crucial for developing well-rounded students. We assessed the availability of resources that have the potential to impact PE (staffing, continuing education, annual PE equipment budgets) in a nationally-representative sample of 640 U.S. public elementary schools. Higher student-to-PE teacher ratios were associated with students not receiving adequate instruction. Equipment budgets were minimal (median = $500) and 30% of schools had no budget at all. Additional financial support from federal and state education agencies would help schools to better meet recommendations for PE

The Effects of the Type of Skill Test, Choice, and Gender on the Situational Motivation of Physical Education Students

The purpose of this study was to examine the effects of (a) skill test type, (b) choices, and (c) gender on the situational motivation profiles of adolescents during skill testing in physical education. Participants were 507 students (53% male) aged 12–16 years (M = 13.87; SD = 0.94) attending a suburban junior high school in a western state in the U.S. All participants experienced either a norm-referenced, summative or a criterion-referenced, formative skill test with or without choices. The Situational Intrinsic Motivation Scale (SIMS) was administered to assess situational motivation. A 2 (test type) × 2 (choice) × 2 (gender) MANOVA was used to test for significant differences on each of the four SIMS indices. Significant test type and gender and a significant test type by gender interaction were found. These findings suggest practitioners should use criterion-referenced, formative skill tests especially when teaching girls in physical education

Global Properties of Neutral Hydrogen in Compact Groups

Compact groups of galaxies provide a unique environment to study the evolution of galaxies amid frequent gravitational encounters. These nearby groups have conditions similar to those in the earlier universe when galaxies were assembled and give us the opportunity to witness hierarchical formation in progress. To understand how the compact group environment affects galaxy evolution, we examine the gas and dust in these groups. We present new single-dish GBT neutral hydrogen (HI) observations of 30 compact groups and define a new way to quantify the group HI content as the HI-to-stellar mass ratio of the group as a whole. We compare the HI content with mid-IR indicators of star formation and optical [g-r] color to search for correlations between group gas content and star formation activity of individual group members. Quiescent galaxies tend to live in HI-poor groups, and galaxies with active star formation are more commonly found in HI-rich groups. Intriguingly, we also find "rogue" galaxies whose star formation does not correlate with group HI content. In particular, we identify three galaxies (NGC 2968 in RSCG 34, KUG 1131+202A in RSCG 42, and NGC 4613 in RSCG 64) whose mid-IR activity is discrepant with the HI. We speculate that this mismatch between mid-IR activity and HI content is a consequence of strong interactions in this environment that can strip HI from galaxies and abruptly affect star-formation. Ultimately, characterizing how and on what timescales the gas is processed in compact groups will help us understand the interstellar medium in complex, dense environments similar to the earlier Universe.Comment: Accepted to A

Step Counts of 10- to 11-Year-Old Children by Ethnicity and Metropolitan Status

Background: The purpose of this study was to conduct a secondary analysis by combining 2 pedometer data sets to describe and analyze pedometer-determined steps/day of children by ethnicity and metropolitan status. Methods: Participants were 582 children (309 girls, 273 boys; 53% Hispanic, 26% Caucasian, 21% African American) age 10 to 11 years (M = 10.37 ± 0.48) attending 1 of 10 schools located in urban, suburban, and rural settings. Participants wore a research grade pedometer for at least 3 week/school days. Mean steps/ day were analyzed by gender, ethnicity, and metropolitan status. Results: Statistical analyses indicated 1) boys (12,853 ± 3831; P \u3c .001) obtained significantly more steps/day than girls (10,409 ± 3136); 2) African American (10,709 ± 3386; P \u3c .05) children accumulated significantly less steps/day than Hispanic (11,845 ± 3901) and Caucasian (11,668 ± 3369) children; and 3) urban (10,856 ± 3706; P \u3c .05) children obtained significantly less steps/day than suburban (12,297 ± 3616) and rural (11,934 ± 3374) children. Conclusions: Findings support self-report data demonstrating reduced physical activity among African American children and youth, especially girls, and among children and youth living in urban areas. Possible reasons for these discrepancies are explored

Step Counts of Non-White Minority Children and Youth by Gender, Grade Level, Race/Ethnicity, and Mode of School Transportation

Background: The purposes of this study were to describe and analyze the steps/d of nonwhite minority children and youth by gender, grade level, race/ethnicity, and mode of school transportation. A secondary purpose was to compare the steps/d of minority children and youth to their Caucasian grade-level counterparts. Methods: Participants were 547 minority youth grades 5 to 8 from 4 urban schools. Participants wore sealed pedometers for 6 consecutive week/school days. Three hundred and ten participants responded to a questionnaire concerning their mode of transportation to and from school. Results: Statistical analyses indicated a main effect for gender (F(3,546) = 13.50, P \u3c .001) with no interaction. Boys (12,589 ± 3921) accumulated significantly more steps/d than girls (9,539 ± 3,135). Further analyses also revealed a significant main effect for mode of school transportation (F(2, 309) = 15.97, P \u3c .001). Walkers (12,614 ± 4169) obtained significantly more steps/d than car (10,021 ± 2856) or bus (10,230 ± 3666) transit users. Conclusions: Minority boys obtain similar steps/d as their Caucasian grade-level counterparts; minority girls obtain less steps/d than their Caucasian grade-level counterparts. Minority youth who actively commute are more likely to meet PA recommendations than nonactive commuters

Step Counts of Non-White Minority Youth by Gender, Grade Level, and Mode of School Transportation

Background: The purposes of this study were to describe and analyze the steps/d of nonwhite minority children and youth by gender, grade level, race/ethnicity, and mode of school transportation. A secondary purpose was to compare the steps/d of minority children and youth to their Caucasian grade-level counterparts. Methods: Participants were 547 minority youth grades 5 to 8 from 4 urban schools. Participants wore sealed pedometers for 6 consecutive week/school days. Three hundred and ten participants responded to a questionnaire concerning their mode of transportation to and from school. Results: Statistical analyses indicated a main effect for gender (F(3, 546) = 13.50, P \u3c .001) with no interaction. Boys (12,589 ± 3921) accumulated significantly more steps/d than girls (9,539 ± 3,135). Further analyses also revealed a significant main effect for mode of school transportation (F(2, 309) = 15.97, P ≤ .001). Walkers (12,614 ± 4169) obtained significantly more steps/d than car (10,021 ± 2856) or bus (10,230 ± 3666) transit users. Conclusions: Minority boys obtain similar steps/d as their Caucasian grade-level counterparts; minority girls obtain less steps/d than their Caucasian grade-level counterparts. Minority youth who actively commute are more likely to meet PA recommendations than nonactive commuters

(Mis)perceptions of ethnic group size and consequences for community expectations and cooperation with law enforcement

The changing composition of race and ethnic group size has been noted for Western nations over the last 15 years. Analysis of this change has linked fear of crime and attitudes toward immigrants and prejudice. Changes in ethnic composition are associated with movement of White residents out of traditionally White communities, rising ethnic tension as the ethnic mix shifts, and a heightened sense of injustice regarding the justice system. (Mis)perceptions of ethnic groups size shape attitudes toward minority groups, as well as policy, practice, and individual behavior in the context of the community. This study seeks to understand the extent of such misperceptions in the Australian context and whether misperceptions of race and ethnic composition are associated with beliefs and attitudes toward formal and informal social control. Utilizing Blalock’s racial threat hypothesis, this study analyzes whether perceived relative ethnic group size is associated with self-reported willingness to cooperate with police as a way to minimize perceived threat. Findings suggest that respondents overestimate the size of minority populations while underestimating the majority White composition and that these misperceived distortions in ethnic group size have consequences for informal and formal social control

Chimpanzee Rights: The Philosophers' Brief

In December 2013, the Nonhuman Rights Project (NhRP) filed a petition for a common law writ of habeas corpus in the New York State Supreme Court on behalf of Tommy, a chimpanzee living alone in a cage in a shed in rural New York (Barlow, 2017). Under animal welfare laws, Tommy’s owners, the Laverys, were doing nothing illegal by keeping him in those conditions. Nonetheless, the NhRP argued that given the cognitive, social, and emotional capacities of chimpanzees, Tommy’s confinement constituted a profound wrong that demanded remedy by the courts. Soon thereafter, the NhRP filed habeas corpus petitions on behalf of Kiko, another chimpanzee housed alone in Niagara Falls, and Hercules and Leo, two chimpanzees held in research facilities at Stony Brook University. Thus began the legal struggle to move these chimpanzees from captivity to a sanctuary, an effort that has led the NhRP to argue in multiple courts before multiple judges. The central point of contention has been whether Tommy, Kiko, Hercules, and Leo have legal rights. To date, no judge has been willing to issue a writ of habeas corpus on their behalf. Such a ruling would mean that these chimpanzees have rights that confinement might violate. Instead, the judges have argued that chimpanzees cannot be bearers of legal rights because they are not, and cannot be persons. In this book we argue that chimpanzees are persons because they are autonomous

Strings, Black Holes and the Extreme Energy Cosmic Rays

In a large class of models the string excitation and black hole pictures invoked as an explanation of trans-GZK cosmic ray events are equivalent. Single particle inclusive distributions are thermal at the Hagedorn temperature. The hadron multiplicities are reminiscent of multiplicities in heavy nucleus initiated interactions.Comment: 10 pages, no figure