The prognostic relevance of psychological factors with regard to participation and success in table-tennis     

Guillaume Martinent  Valérian Cece  Marije Titia Elferink-Gemser  Irene Renate Faber  Jean-Claude Decret 《Journal of sports sciences》2018,36(23):2724-2731

ABSTRACT

This study examined the prognostic relevance of self-determined motivation, coping, burnout, perceived stress and recovery experienced by 159 youth table-tennis players involved in intensive training centers with regard to their participation and success six years later. Results of ANCOVAs showed that players who still practiced at time 2 (T2; six years later; n = 130) reported lower time 1 (T1; while they were involved in intensive training centers) amotivation (large effect), disengagement-oriented coping, sport devaluation and reduced accomplishment (moderate effects) than their counterparts who dropped out at T2 (n = 29). Results of ANCOVAs also showed that international (n = 18) and/or national players (n = 86) at T2 reported significantly lower T1 amotivation (large effect), disengagement-oriented coping and sport devaluation (moderate effects) in comparison to regional (n = 26) players at T2. Finally results of correlational analyses showed that T2 performance and/or six-year performance progress were significantly and weakly correlated with introjected and external regulations, perceived stress and perceived recovery, and significantly and moderately correlated with amotivation, disengagement-oriented coping, sport devaluation, and reduced accomplishment. Overall, this study provided insights into the role played by self-determined motivation, coping, burnout, perceived stress and recovery in the table-tennis players’ dropout and performance level six years later.  相似文献   

An expert system shell to teach problem solving     

Renate C. Lippert 《TechTrends》1988,33(2):22-26

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Family rearing antecedents of pubertal timing   总被引：5，自引：2，他引：3  

Belsky J  Steinberg LD  Houts RM  Friedman SL  DeHart G  Cauffman E  Roisman GI  Halpern-Felsher BL  Susman E;NICHD Early Child Care Research Network 《Child development》2007,78(4):1302-1321

Two general evolutionary hypotheses were tested on 756 White children (397 girls) studied longitudinally: (1) rearing experiences would predict pubertal timing; and (2) children would prove differentially susceptible to rearing. Analysis of pubertal measurements, including some based on repeated physical assessments, showed that mothering and fathering, earlier and later in childhood, predicted pubertal development, but only for girls, with negative parenting appearing most influential; maternal harsh control predicted earlier menarche. Rearing effects varied by infant negative emotionality, proving stronger (and opposite) for girls who in infancy were lower rather than higher in negativity. Maternal menarche, controlled in all analyses, was a stronger predictor than rearing. Findings are discussed in terms of theory development, genetic and nutritional influences, and sample restrictions.  相似文献   

Traditional balance and slackline training are associated with task-specific adaptations as assessed with sensorimotor tests     

Samuel Volery  Navrag Singh  Eling D. de Bruin  Renate List  Marc Morten Jaeggi  Brigitte Mattli Baur 《European Journal of Sport Science》2017,17(7):838-846

The purpose of this study was to measure alterations in sensorimotor skills and balance resulting from slackline training and conventional balance training. Forty-three physically fit subjects were randomized into three groups. Two groups practiced three times a week for 15?minutes, including at least once supervised session, on the slackline or perform conventional balance training for 6 weeks. The control group was not allowed to perform any balance training. Before and after the intervention, the subjects underwent sensorimotor and strength tests. The results of our intra-class correlation analysis showed that the stability parameters from the multifunctional training device (MFT, 0.7), the height during the countermovement jump (CMJ, 0.95) and the maximum force (0.88) during leg press showed excellent reliability. A post hoc comparison indicated a larger effect of conventional training (almost 11% reduction in MFT stability) compared with slackline training in group-wide comparisons of the pre- to the post-training measurements. The factor analysis showed that stability and sensorimotor assessment using MFT were correlated, as were height during CMJ and maximal force during leg press, which represented dynamic strength. Because CMJ had the highest intra-class correlation value, it was chosen over maximum force from leg press. For these reasons, only two out of nine measured parameters, namely MFT stability and CMJ, were analysed across groups. The only observed difference between the two groups was MFT stability (slackline???1.5%, conventional???13%), whereas the improvement of CMJ was the same (slackline?+?3%, conventional?+?3%). It can be concluded that slacklining is partly complementary to conventional sensorimotor training.  相似文献   

Training load characteristics and injury and illness risk identification in elite youth ski racing: A prospective study     

Carolin Hildebrandt  Renate Oberhoffer  Christian Raschner  Erich Müller  Christian Fink  Lisa Steidl-Müller 《运动与健康科学(英文)》2021,10(2):230-236

PurposeThe study aimed to investigate the role of training load characteristics and injury and illness risk in youth ski racing.MethodsThe training load characteristics as well as traumatic injuries, overuse injuries, and illnesses of 91 elite youth ski racers (age = 12.1 ± 1.3 years, mean ± SD) were prospectively recorded over a period of 1 season by using a sport-specific online database. Multiple linear regression analyses were performed to monitor the influence of training load on injuries and illnesses. Differences in mean training load characteristics between preseason, in-season, and post-season were calculated using multivariate analyses of variance.ResultsDifferences were discovered in the number of weekly training sessions (p = 0.005) between pre-season (4.97 ± 1.57) and post-season (3.24 ± 0.71), in the mean training volume (p = 0.022) between in-season (865.8 ± 197.8 min) and post-season (497.0 ± 225.5 min) and in the mean weekly training intensity (Index) (p = 0.012) between in-season (11.7 ± 1.8) and post-season (8.9 ± 1.7). A total of 185 medical problems were reported (41 traumatic injuries, 12 overuse injuries, and 132 illnesses). The weekly training volume and training intensity was not a significant risk factor for injuries (p > 0.05). Training intensity was found to be a significant risk factor for illnesses in the same week (β = 0.348; p = 0.044; R² = 0.121) and training volume represents a risk factor for illnesses in the following week (β = 0.397; p = 0.027; R² = 0.157).ConclusionA higher training intensity and volume were associated with increased illnesses, but not with a higher risk of injury. Monitoring training and ensuring appropriate progression of training load between weeks may decrease incidents of illness in-season.  相似文献   

The effect of elevating the heels on spinal kinematics and kinetics during the back squat in trained and novice weight trainers     

Mark G. L. Sayers  Caroline Bachem  Pascal Schütz  William R. Taylor  Renate List  Silvio Lorenzetti 《Journal of sports sciences》2020,38(9):1000-1008

ABSTRACT

This research assessed the influence of various heel elevation conditions on spinal kinematic and kinetic data during loaded (25% and 50% of body weight) high-bar back squats. Ten novice (mass 67.6 ± 12.4 kg, height 1.73 ± 0.10 m) and ten regular weight trainers (mass 66.0 ± 10.7 kg, height 1.71 ± 0.09 m) completed eight repetitions at each load wearing conventional training shoes standing on the flat level floor (LF) and on an inclined board (EH). The regular weight training group performed an additional eight repetitions wearing weightlifting shoes (WS). Statistical parametric mapping (SPM1D) and repeated measures analysis of variance were used to assess differences in spinal curvature and kinetics across the shoe/floor conditions and loads. SPM1D analyses indicated that during the LF condition the novice weight trainers had greater moments around L4/L5 than the regular weight trainers during the last 20% of the lift (P < 0.05), with this difference becoming non-significant during the EH condition. This study indicates that from a perspective of spinal safety, it appears advantageous for novice weight trainers to perform back squats with their heels slightly elevated, while regular weight trainers appear to realize only limited benefits performing back squats with either EH or WS.  相似文献   

Anerkennungsdefizite und Vorurteile     

Möller  Renate  Heitmeyer  Wilhelm 《Zeitschrift für Erziehungswissenschaft》2004,7(4):497-517

Zeitschrift für Erziehungswissenschaft - Anerkennungstheoretische Überlegungen und Vorurteile gewinnen zunehmend an Bedeutung bei der Analyse und Erklärung problembehafteter...  相似文献   

Using an instrument to analyse competence‐based study programmes: experiences of teachers in Dutch vocational education and training     

Renate Wesselink  Agaath M. Dekker‐Groen  Harm J. A. Biemans  Martin Mulder 《课程研究杂志》2013,45(6):813-829

Competence‐based education is becoming increasingly popular. Competencies are used more and more as the starting point for designing curricula and instructional methods, especially in vocational education and training, to realize authentic and self‐steering study programmes. Despite its popularity in both research and educational settings, there is no shared understanding of what competence‐based education should look like. Earlier work developed a model for competence‐based education that outlines eight features that are important for competence‐based education. This paper presents a study designed to determine the extent to which the model for competence‐based education can be understood and perceived as useful by teachers in vocational education and training in the Netherlands. The study included 12 teams of teachers in the process of designing or re‐designing their study programmes to be more competence‐based. Teachers reported that the instrument helped them understand the state of affairs of their study programmes, and empowered them to make decisions about the extent to which they want to make these programmes more competence‐based.  相似文献   

Public Education about Memory and Aging: Objective Findings and Subjective Insights     

Martine E. M. Mol  Renate H. M. de Groot  Dick Willems 《Educational gerontology》2013,39(10):843-858

Public education about memory was evaluated with a controlled intervention trial. Participants in group 1 (n = 273) attended a symposium covering memory-related topics and received a magazine with identical information. Group 2 (n = 141) only received the magazine. Participants were nonprofessionals and professionals aged between 29 and 88. Outcome measures were knowledge about memory and subjective experience. For nonprofessionals, knowledge increment was higher in group 1 than in group 2, indicating that an objective increment in knowledge is present in nonprofessionals after attending the symposium. No knowledge change occurred in professionals. Furthermore, participants were very satisfied after both interventions, even when knowledge transfer was limited.  相似文献   

Part-time study at postgraduate level     

Renate Simpson 《Higher Education Quarterly》1970,24(2):201-211

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