The Dutch language anterior cruciate ligament return to sport after injury scale (ACL-RSI) – validity and reliability     

Anton J. Slagers  Inge H. F. Reininga  Inge van den Akker-Scheek 《Journal of sports sciences》2017,35(4):393-401

The ACL-Return to Sport after Injury scale (ACL-RSI) measures athletes’ emotions, confidence in performance, and risk appraisal in relation to return to sport after ACL reconstruction. Aim of this study was to study the validity and reliability of the Dutch version of the ACL-RSI (ACL-RSI (NL)).

Total 150 patients, who were 3–16 months postoperative, completed the ACL-RSI(NL) and 5 other questionnaires regarding psychological readiness to return to sports, knee-specific physical functioning, kinesiophobia, and health-specific locus of control. Construct validity of the ACL-RSI(NL) was determined with factor analysis and by exploring 10 hypotheses regarding correlations between ACL-RSI(NL) and the other questionnaires. For test–retest reliability, 107 patients (5–16 months postoperative) completed the ACL-RSI(NL) again 2 weeks after the first administration. Cronbach’s alpha, Intraclass Correlation Coefficient (ICC), SEM, and SDC, were calculated. Bland–Altman analysis was conducted to assess bias between test and retest.

Nine hypotheses (90%) were confirmed, indicating good construct validity. The ACL-RSI(NL) showed good internal consistency (Cronbach’s alpha 0.94) and test–retest reliability (ICC 0.93). SEM was 5.5 and SDC was 15. A significant bias of 3.2 points between test and retest was found.

Therefore, the ACL-RSI(NL) can be used to investigate psychological factors relevant to returning to sport after ACL reconstruction.  相似文献   

Arts participation and the three faces of time: A reflection on disentangling the impact of life stage,period and socialization on arts participation,exemplified by an analysis of the US arts audience     

Andries van den Broek 《Cultural Trends》2013,22(1):46-53

Arts participation bears the threefold imprint of time: people's life stage (age), their earlier socializing imprint (cohort) and the historical circumstances of the moment (period). A proper understanding of these three effects is of great importance in understanding the present and future sizes and preferences of arts audiences. Such understanding implies disentangling those three effects properly, rather than overlooking or confusing them. An example of how that might be done is presented here with regard to arts participation in the US.  相似文献   

Class Unknown: Undercover Investigations of American Work and Poverty from the Progressive Era to the Present. Mark Pittenger. New York: New York University Press, 2012.     

Mel van Elteren 《Journal of American culture (Malden, Mass. : 2003)》2013,36(2):141-142

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Taking It Big: C. Wright Mills and the Making of Political Intellectuals. Stanley Aronowitz. New York: Columbia University Press, 2012.     

Mel van Elteren 《Journal of American culture (Malden, Mass. : 2003)》2013,36(2):156-157

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A method for generating and measuring very weak radio-frequency currents     

Walter van B. Roberts 《Journal of The Franklin Institute》1926,201(3):301-310

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An investigation of the alleged allotropy of zinc by X-ray analysis and a redetermination of the zinc lattice     

W.M. Peirce  E.A. Anderson  P. van Dyck 《Journal of The Franklin Institute》1925,200(3):349-361

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Open feedback in gymnastic judging causes conformity bias based on informational influencing     

Boen F  van Hoye K  Auweele YV  Feys J  Smits T 《Journal of sports sciences》2008,26(6):621-628

The aims of this study were twofold: (1) to determine whether open feedback (i.e. the ability to hear or see the scores of colleague judges after each performance) would lead judges in gymnastics to conform with their colleagues, and (2) to identify the underlying process on which this conformity is based. Twenty-three certified Flemish judges in women's gymnastics were randomly divided into panels of a maximum of five judges. These panels had to rate the same 30 videotaped individual vaults: 15 in phase 1 and 15 in phase 2. Two independent variables were orthogonally manipulated: feedback (or no feedback) during phase 1 and feedback (or no feedback) during phase 2. The results of phase 1 revealed that the variation between the judges' scores was less within panels that had received feedback than within panels that had not received feedback. We therefore conclude that the availability of feedback elicits conformity among gymnastic judges. The results of phase 2 indicated that this conformity continued even when feedback was no longer provided, suggesting that the observed conformity was based on informational influencing (i.e. because of uncertainty about the correct responses) and not on normative influencing (i.e. out of fear of standing out in the group).  相似文献   

Coordination variability and skill development in expert triple jumpers   总被引：1，自引：0，他引：1  

Wilson C  Simpson SE  van Emmerik RE  Hamill J 《Sports biomechanics / International Society of Biomechanics in Sports》2008,7(1):2-9

The aim of this study was to examine the influence of skill of expert triple jumpers on the coordination variability of lower extremity intra-limb couplings. In contrast to the traditional motor learning perspective, we hypothesized that as skill and thus performance increases, movement coordination variability will also increase. Three-dimensional kinematic and ground reaction force data were collected during the hop-step transition phase of the triple jump. Relative motion plots and a modified vector coding technique were used to quantify the coordination variability across the trials. The results were consistent with a U-shaped curve, representing coordination variability, as skill increases. The high coordination variability in less skilled athletes is present while the appropriate characteristics defining the movement coordination patterns are acquired. This coordination variability may not be beneficial to performance. As the refinement of these characteristics is achieved, coordination variability decreases, resulting in a more consistent or regulated performance. In the final stages of developing a skilled performance, a functional variability is accessed that brings flexibility to the system allowing it to cope with perturbations. This study highlights the need to address the learning effect when analysing coordination variability from a dynamical systems perspective.  相似文献   

Book reviews     

E. D. Duryea  Neville Bennett  Sharom Ahmat  Dietrich Brandt  Lionel S. Lewis  Ian Woodburn  Claude E. Welch Jr.  Sheila Slaughter  Pierre L. van den Berghe  Doreen Harrison 《Higher Education》1980,9(2):227-237

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Political economy of adult learning systems: comparative study of strategies,policies and constraints     

Jeroen Lavrijsen 《International Journal of Lifelong Education》2017,36(5):621-623

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