The effect of playing status,maturity status,and playing position on the development of match skills in elite youth football players aged 11–18 years: A mixed-longitudinal study     

Chris Saward  John G. Morris  Mary E. Nevill  Caroline Sunderland 《European Journal of Sport Science》2019,19(3):315-326

This mixed-longitudinal study examined the development of match skills in elite male youth footballers (aged 11–18 years), while considering the effect of playing status, maturity status, and playing position. Across two seasons, 126 elite male youth footballers were assessed in 1–10 competitive matches (401 player-matches). For each match, the on-the-ball actions of each player were recorded using a notation system. The match skills observed were frequencies of successful passes, on-target shots, dribbles, crosses, clearances, and tackles/blocks/interceptions. Multilevel Poisson analysis was used to model the development of players, with regard to each match skill. Modelling revealed significant (p?p?p?p?p?相似文献   

Forward acceleration of the centre of mass during ski skating calculated from force and motion capture data     

Caroline Göpfert  Mikko V. Pohjola  Vesa Linnamo  Olli Ohtonen  Walter Rapp  Stefan J. Lindinger 《Sports Engineering》2017,20(2):141-153

The purpose of this paper was to present and evaluate a methodology to determine the contribution of bilateral leg and pole thrusts to forward acceleration of the centre of mass (COM) of cross-country skiers from multi-dimensional ground reaction forces and motion capture data. Nine highly skilled cross-country (XC) skiers performed leg skating and V2-alternate skating (V2A) under constant environmental conditions on snow, while ground reaction forces measured from ski bindings and poles and 3D motion with high-speed cameras were captured. COM acceleration determined from 3D motion analyses served as a reference and was compared to the results of the proposed methodology. The obtained values did not differ during the leg skating push-off, and force–time curves showed high similarity, with similarity coefficients (SC) >0.90 in the push-off and gliding phases. In V2A, leg and pole thrusts were shown to contribute 35.1 and 65.9% to the acceleration of the body, respectively. COM acceleration derived from ground reaction forces alone without considering the COM position overestimated the acceleration compared to data from motion analyses, with a mean difference of 17% (P < 0.05) during leg push-off, although the shapes of force–time curves were similar (SC = 0.93). The proposed methodology was shown to be appropriate for determining the acceleration of XC skiers during leg skating push-off from multi-dimensional ground reaction forces and the COM position. It was demonstrated that both the COM position and ground reaction forces are needed to find the source of acceleration.  相似文献   

Adolescent caregiving success as a predictor of social functioning from ages 13 to 33     

Joseph P. Allen  Meghan A. Costello  Amanda F. Hellwig  Corey Pettit  Jessica A. Stern  Bert N. Uchino 《Child development》2023,94(6):1610-1624

Adolescent success providing satisfying support in response to a close friend's call in a caregiving task was examined as a potentially fundamental developmental competence likely to predict future social functioning, adult caregiving security, and physical health. Adolescents (86 males, 98 females; 58% White, 29% African American, 8% mixed race/ethnicity, 5% other) were followed from ages 13 to 33 (1998–2021) using multiple methods and reporters. Early caregiving success was found to predict greater self- and partner-reported caregiving security, lower negativity in adult relationships, and higher adult vagal tone. Results are interpreted as advancing our understanding beyond simply recognizing that adolescent friendships have long-term import, to now identifying specific capacities within friendships that are linked to longer-term outcomes.  相似文献   

The Rape of the Masters: How Political Correctness Sabotages Art: Roger Kimball     

Caroline Goldthorpe 《Curator: The Museum Journal》2005,48(4):483-486

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Family Medicine editors collaborate towards antiracist publishing     

Sarina Schrager  Sumi Sexton  Marjorie Bowman  Caroline Richardson 《Learned Publishing》2023,36(1):68-72

• Editors of 10 North American Family Medicine journals simultaneously published a Joint Call for Action to address systemic racism and encourage diversity, equity, inclusion and accessibility/antiracism (DEIA) initiatives in medicine and medical publishing in January 2021.
• The efforts of the journals since publication of the joint editorial are summarized and include working to diversify editorial teams, editorial boards and authors; enhanced content about DEIA topics; mentoring of authors who are underrepresented in medicine (URM); and presenting content related to DEIA in Family Medicine publishing at national meetings.
• Editors had a follow up meeting in November 2022 to continue working toward a common goal of reducing racism and increasing DEIA initiatives in Family Medicine publications.

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Using the Concrete-Representational-Abstract Sequence to Teach Conceptual Understanding of Place Value,Rounding, and Expanded Notation     

Jessica H. Milton  Margaret M. Flores  Vanessa M. Hinton  Caroline Dunn  Craig B. Darch 《Learning disabilities research & practice》2023,38(1):15-25

This study investigated the effects of a place value intervention with third-grade students with learning disabilities. The intervention added content to a research-based intervention using the concrete-representational-abstract (CRA) sequence. The added content reflected current mathematics standards for third grade. Students’ place value understanding was measured using probes in which students had to identify the value of each digit within a three-digit number, round three-digit numbers to the nearest 10 or 100, and write three equations showing an expanded form of a three-digit number. A single-case, multiple-probe-across-students design showed a functional relation between CRA and completion of items requiring place value understanding. Students completed a generalization task by estimating the sum of a given equation.  相似文献   

Introducing medical students to radiological anatomy: The importance of experiential learning during the Covid-19 pandemic lockdowns     

Gustavo Bittencourt Camilo  Sérgio Murta Maciel  Gabriela Cumani Toledo Camilo  Kayan Felipe de Oliveira Andrade  Beatriz de Oliveira  Rayane da Silva Silveira  Isabella Nunes Borges Ferreira  Caroline da Silva Fernandes  Mariana Vilela Ferreira 《Anatomical sciences education》2022,15(5):980-984

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Lessons from lockdown: Autistic students,parents and mainstream schools     

Carol Vincent  Caroline Oliver  Georgia Pavlopoulou 《British Educational Research Journal》2023,49(3):522-537

This paper reports on the findings of a BERA-funded small-scale project that explores the impacts of COVID-19 lockdowns on the educational experiences of autistic children and young people who attend mainstream schools and their parents/carers in England. We observe that, unsurprisingly, lockdown resulted in associated stresses for families. However, our main argument is that for the participants, the pandemic has not been experienced to the same extent as is popularly understood; that is, causing major disruption to children's schooling experiences and/or unusual levels of social isolation. Using the concept of stigma as a theoretical resource, we argue that this is because the families with whom we spoke were already experiencing, pre-COVID-19, disrupted schooling and degrees of social isolation. Indeed, for many of the young people, the break from school occasioned by lockdown allowed them a release from the more negative and stigmatising aspects of their routine experiences within school. We therefore argue that the disruption of the pandemic sheds light on how stigma shapes students' daily school experiences.  相似文献