Association of different types of playing surfaces with bone mass in growing girls     

Esther Ubago-Guisado  Jorge García-Unanue  Jorge López-Fernández  Javier Sánchez-Sánchez  Leonor Gallardo 《Journal of sports sciences》2017,35(15):1484-1492

The aim of this cross-sectional study was to compare bone mass in young female athletes playing ball games on different types of playing surfaces. About 120 girls, 9–13 years of age (10.6 ± 1.5 years old Tanner I–III) were recruited and divided into prepubertal and pubertal groups. The sample represented 3 groups of athletes: soccer (N = 40), basketball (N = 40), and handball (N = 40); and 6 different playing surfaces (soccer – ground, soccer – artificial turf, basketball – synthetic, basketball – parquet, handball – synthetic, and handball – smooth concrete). Total and regional body composition (bone mass, fat mass, and lean mass) were measured by dual-energy X-ray absorptiometry (DXA). The mechanical properties of the surfaces (force reduction, vertical deformation, and energy return) were measured with the Advanced Artificial Athlete (Triple A) method. The degree of sexual development was determined using Tanner test. The pubertal group showed that soccer players on the ground, basketball players on synthetic, and handball players on smooth concrete had higher values of bone mineral content (BMC) and bone mineral density (BMD) (P < 0.05) than the soccer players on the artificial turf, basketball players on parquet, and handball players on synthetic. In conclusion, a hard playing surface, with less vertical deformation and force reduction, and greater energy return, is associated with higher levels of BMD and BMC in growing girls, regardless of the sport they practice.  相似文献   

Copyright and you     

Dr. Esther R. Sinafsky Ph.D.  Dr. Sandra L. Wertz 《TechTrends》1996,41(4):9-10

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Connections among assessment,testing, and faculty development     

Uche O. Ohia 《Assessment Update》1995,7(4):9-9

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Maximizing and assessing a one-shot information literacy session: A case study     

Esther L. Gil 《Journal of Business & Finance Librarianship》2017,22(2):97-110

This case study describes collaboration between an instructor and business librarian to maximize a one-shot information literacy session for a required marketing class for business majors. It includes an active-learning exercise where groups use three key business databases to conduct a company and industry analysis and an environmental scan for a company. The instructor then guides them in developing a strengths, weaknesses, opportunities, threats (SWOT) analysis. This session prepares students for the SWOT analysis they will have to submit for their actual projects. This article includes assessment of groups' in-class exercises as well as citation analysis of the assignments they turned in for their actual projects.  相似文献   

A test of the interval rule in the state of bismuth I     

Esther U. Mintz 《Journal of The Franklin Institute》1936

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Early Emotion Knowledge and Later Academic Achievement Among Children of Color in Historically Disinvested Neighborhoods     

Alexandra Ursache  Kathleen Kiely Gouley  Spring Dawson-McClure  R. Gabriela Barajas-Gonzalez  Esther J. Calzada  Keith S. Goldfeld  Laurie M. Brotman 《Child development》2020,91(6):e1249-e1266

This study examined longitudinal relations between emotion knowledge (EK) in pre-kindergarten (pre-K; M_age = 4.8 years) and math and reading achievement 1 and 3 years later in a sample of 1,050 primarily Black children (over half from immigrant families) living in historically disinvested neighborhoods. Participants were part of a follow-up study of a cluster randomized controlled trial. Controlling for pre-academic skills, other social–emotional skills, sociodemographic characteristics, and school intervention status, higher EK at the end of pre-K predicted higher math and reading achievement test scores in kindergarten and second grade. Moderation analyses suggest that relations were attenuated among children from immigrant families. Findings suggest the importance of enriching pre-K programs for children of color with EK-promotive interventions and strategies.  相似文献   

Erratum to: Improving word reading speed: individual differences interact with a training focus on successes or failures     

Esther G. Steenbeek-Planting  Wim H. J. van Bon  Robert Schreuder 《Reading and writing》2012,25(9):2315-2318

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New churches in East London in the early eighteenth century     

Esther de Waal 《Culture, Theory & Critique》2013,54(1):98-114

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The information needs and information seeking behaviour of medical research staff     

JaN. Murray  Esther Carey  Suzanne Walker 《Health information and libraries journal》1999,16(1):46-49

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The effects of task explicitness to communicate on the expressiveness of children’s drawings of different topics     

Esther Burkitt 《教育心理学》2017,37(2):219-236

Effects of asking children to communicate through their drawings have been investigated using animate rather than inanimate drawing topics. The present study investigated the impact of a communication context on children’s drawings of topics with contrasting animism. Three hundred and twenty-two children, 156 boys and 166 girls aged 6–11 years were allocated to two conditions. The communication condition (n = 161) involved instructions to communicate emotion and the reference condition (n = 161) gave no instruction to communicate. Children drew either houses or human figures (House, N = 160, Human figures, N = 162), producing freehand drawings of the topic; a baseline version followed by a happy and a sad version in counterbalanced order. Expressive content in the communication condition was greater than in the reference condition and impacted differentially on the strategies used between the houses and human figures drawings. The findings are considered with respect to the cue dependency model and framework theory of art.  相似文献