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1.
Abstract

Whilst much research has suggested a positive link between pre-performance routines (PPRs) and performance, the specific mechanisms of the process have yet to be understood fully. It has been suggested that the PPR may influence performance through lowering the athlete's anxiety, and/or increasing their self-efficacy, but to date this has not specifically been explored in detail. As a result the aim of the current study was to explore the impact of specific individualised PPRs on performance, anxiety and self-efficacy in semi-professional soccer players. Participants were 20 male semi-professional soccer players (M = 19.45, SD = 2.81) recruited from clubs in England. Adopting a repeated measure design, players were tested on performance, anxiety, and self-efficacy pre- and post a 7-day intervention period in which the participants learnt a new PPR. The data were analysed using factorial mixed measures analysis of variance (ANOVAs), with the results revealing a significant difference in somatic anxiety for the experimental group and a decrease in performance for the control group. The study provides further support for the suggestion that the PPR can enhance performance by reducing experiences of anxiety prior to performance.  相似文献   

2.
Abstract

The objective of the present study was to test the effects of TARGET premises on state anxiety, self-efficacy, and sport skill development. A total of 317 high school students with a mean age of 13.9 years (s=0.76) were assigned either to an intervention group or a control group. The triple jump and the Baryshnikov shot put techniques were taught to both groups in 10 teaching units. In the intervention group the teachers employed the TARGET structures, while in the control group the command style was used. Students completed pre- and post-intervention measures of state anxiety and self-efficacy just before execution of the two techniques. Motor skill development was evaluated by both absolute performance (in centimetres) and technical execution of the tasks. The results of repeated-measures analyses of variance indicated that the intervention group reported higher triple jump self-efficacy and better technical execution of the shot put than the control group. No intervention effects were observed for the anxiety responses. Our findings provide partial evidence for positive effects of a task-involving motivational climate on sport skill development and performance-related states.  相似文献   

3.
Research has shown learning advantages for self-controlled practice contexts relative to yoked (i.e., experimenter-imposed) contexts; yet, explanations for this phenomenon remain relatively untested. We examined, via path analysis, whether self-efficacy and intrinsic motivation are important constructs for explaining self-controlled learning benefits. The path model was created using theory-based and empirically supported relationships to examine causal links between these psychological constructs and physical performance. We hypothesised that self-efficacy and intrinsic motivation would have greater predictive power for learning under self-controlled compared to yoked conditions. Participants learned double-mini trampoline progressions, and measures of physical performance, self-efficacy and intrinsic motivation were collected over two practice days and a delayed retention day. The self-controlled group (M = 2.04, SD = .98) completed significantly more skill progressions in retention than their yoked counterparts (M = 1.3, SD = .65). The path model displayed adequate fit, and similar significant path coefficients were found for both groups wherein each variable was predominantly predicted by its preceding time point (e.g., self-efficacy time 1 predicts self-efficacy time 2). Interestingly, the model was not moderated by group; thus, failing to support the hypothesis that self-efficacy and intrinsic motivation have greater predictive power for learning under self-controlled relative to yoked conditions.  相似文献   

4.
刘颖 《冰雪运动》2014,(5):22-26
鲁茨跳是花样滑冰六个主要单人跳跃种类之一,是最难也是最容易错误用刃的跳跃,在单人滑比赛中占有重要的地位,是花样滑冰中得分最高的几个跳跃之一,是花样滑冰运动员技术水平的标志。特别是女运动员要想在世界大赛上取得良好的成绩,如果没有过硬的鲁茨三周跳和鲁茨三周联跳是不可能实现的目标。目前我国运动员在鲁茨跳中存在起跳变刃、右髋下落、旋转轴不正确三个较大的技术问题。起跳变刃是运动员动作扣分的主要因素。对鲁茨跳常见技术错误和辅助训练方法进行讨论,以期解决当前中国花样滑冰运动员在鲁茨跳中存在的主要技术问题,有效帮助运动员实现成绩目标。  相似文献   

5.
Abstract

An increase in the period over which a muscle generates force can lead to the generation of greater force and, therefore, for example in jumping, to greater jump height. The aim of this study was to examine the effect of squat depth on maximum vertical jump performance. We hypothesized that jump height would increase with increasing depth of squat due to the greater time available for the generation of muscular force. Ten participants performed jumps from preferred and deep squat positions. A computer model simulated jumps from the different starting postures. The participants showed no difference in jump height in jumps from deep and preferred positions. Simulated jumps produced similar kinematics to the participants' jumps. The optimal squat depth for the simulated jumps was the lowest position the model was able to jump from. Because jumping from a deep squat is rarely practised, it is unlikely that these jumps were optimally coordinated by the participants. Differences in experimental vertical ground reaction force patterns also suggest that jumps from a deep squat are not optimally coordinated. These results suggest there is the potential for athletes to increase jump performance by exploiting a greater range of motion.  相似文献   

6.
冬运会花样滑冰金牌的归属,影响全运会各参赛代表团奖牌榜的排序,第11届冬运会的花样滑冰比赛选手在短节目和自由滑2个项目的技术表现对即将召开的第12届冬运会的花样滑冰参赛运动员夺金争牌具有启示作用。采用文献资料、现场观察、数理统计和对比等方法,对第11届冬运会的花样滑冰比赛选手在短节目和自由滑2个项目的技术表现、成绩和得分进行分析,认为我国女子单人滑选手的跳跃技术、旋转技术、步法技术存在着不均衡状况。提出训练中要根据选手状况有针对性地发扬优势,提高跳跃、旋转和步法技术的质量和难度等级,研究、掌握、运用规则,旨在提高我国女子单人滑整体的水平,为第12届冬运会的花样滑冰比赛做好准备提供借鉴和参考。  相似文献   

7.
Purpose

The aim of this study was to test the hypothesized structural paths in Bandura's social-cognitive theory (SCT) model on adolescent girls' physical activity following a 12-month physical activity and dietary intervention to prevent obesity.

Method

We conducted a 12-month follow-up study of 235 adolescent girls (M age = 13.2 years, SD = 0.4) from 12 secondary schools located in low-income communities. At baseline, participants completed SCT scales related to physical activity (i.e., self-efficacy, intention, parental support, and outcome expectations). At baseline and 12-month follow-up (postintervention), participants wore accelerometers for 7 days. Structural equation modeling was used to determine if Time 1 measures predicted physical activity at 12-month follow-up after adjusting for baseline activity.

Results

The model explained 28% and 34% of the variance in physical activity and intention, respectively. Model fit indexes indicated the data were a good fit to the model; however, only self-efficacy was associated with physical activity at 12 months. There was no support for intention or outcome expectations as proximal determinants of behavior. Self-efficacy was associated with outcome expectations and parental support; however, only outcome expectations predicted intention.

Conclusions

Current findings indicate a large proportion of the variance for physical activity and intention remains unexplained and that the proposed pathways in the SCT model were not fully supported. Future model testing may need to consider augmentation or integration of theoretical models, which may include ecological components if we are to advance our understanding of physical activity behavior in this subgroup of the adolescent population.  相似文献   

8.
Purpose: Based on self-determination theory, the purpose of this study was to analyze the relationship between social physique anxiety and intention to be physically active, while taking into account the mediating effects of the basic psychological needs and behavioral regulations in exercise. Method: Having obtained parents' prior consent, 390 students in secondary school (218 boys, 172 girls; Mage = 15.10 years, SD = 1.94 years) completed a self-administered questionnaire during physical education class that assessed the target variables. Preliminary analyses included means, standard deviations, and bivariate correlations among the target variables. Next, a path analysis was performed using the maximum likelihood estimation method with the bootstrapping procedure in the statistical package AMOS 19. Results: Analysis revealed that social physique anxiety negatively predicted intention to be physically active through mediation of the basic psychological needs and the 3 autonomous forms of motivation (i.e., intrinsic motivation, integrated regulation, and identified regulation). Conclusion: The results suggest that social physique anxiety is an internal source of controlling influence that hinders basic psychological need satisfaction and autonomous motivation in exercise, and interventions aimed at reducing social physique anxiety could promote future exercise.  相似文献   

9.
This study targeted to examine the effect of the ToyBox-intervention, a kindergarten-based, family-involved intervention, aiming to improve preschooler’s energy-related behaviours (e.g., physical activity) on motor performance ability. Physical activity sessions, classroom activities, environmental changes and tools for parents were the components of the 1-year intervention. The intervention and control were cluster-randomised, and children’s anthropometry and two motor test items (jumping from side to side, JSS and standing long jump, SLJ) were assessed. A total of 1293 (4.6 ± 0.69 years; 52% boys) from 45 kindergartens in Germany were included (intervention, n = 863; control, n = 430). The effect was assessed using generalised estimating equation. The intervention group showed a better improvement in JSS (Estimate 2.19 jumps, P = 0.01) and tended to improve better in SLJ (Estimate 2.73 cm, P = 0.08). The intervention was more effective in boys with respect to SLJ (P of interaction effect = 0.01). Children aged <4.5 years did not show a significant benefit while older children improved (JSS, Estimate 3.38 jumps, P = 0.004; SLJ, Estimate 4.18 cm, P = 0.04). Children with low socio-economic status improved in JSS (Estimate 5.98 jumps, P = 0.0001). The ToyBox-intervention offers an effective strategy to improve specific components of motor performance ability in early childhood. Future programmes should consider additional strategies specifically targeting girls and younger aged children.

Abbreviations: BMI: body mass index; SES: socio-economic status; JSS: jumping from side to side; SLJ: standing long jump; SD: standard deviation; GEE: generalised estimating equation  相似文献   


10.
Abstract

The present study examined the relationship between students' perceptions of the motivational climate and beliefs about the causes of success, preference for challenging tasks, and satisfaction in physical education. Responses of 50 female and 46 male students (M age = 12.08 years; SD = .72) showed that perceptions of a mastery-oriented motivational climate were related to the belief that motivation or effort caused success and satisfaction. In contrast, perceptions of a performance climate were related to the belief that deception caused success and related negatively to the students' preference for challenging tasks. Results of hierarchical regression analyses revealed that perceptions of the motivational climate explained a significant amount of unique variance in the students' responses after controlling for dispositional goal orientations. The results suggest that the teacher can influence the salience of a mastery-oriented climate and, in so doing, optimize a child's motivation in physical education.  相似文献   

11.
The purpose of this study was to compare triple (T) and quadruple (Q) toe-loop figure skating jumps and quantify basic characteristics of these jumps to provide information to coaches that will assist them in teaching quadruple toe-loops to elite figure skaters. High-speed video was taken during men's practice and competition sessions at the 2002 Salt Lake City Winter Olympics; three-dimensional analyses of selected triple and quadruple jumps were completed. The most significant difference between triple and quadruple toe-loops was an increase in rotational velocity in the air. Additionally, increased vertical velocity at take-off and subsequent time in the air were also observed. Three main conclusions were developed: 1) The timing of rotation of the hips and shoulders was different for quadruple toe-loops compared to triples with the differences being observed before toe-pick; 2) Increases in rotational velocity occurred primarily as a result of the skaters assuming different body positions from take-off through landing which resulted in tighter rotating positions for longer durations of the jump; 3) Greater vertical velocity was gained during the propulsive phase due to the extension of the legs during the press off the ice.  相似文献   

12.
Abstract

We tested the hypothesis that the performance of rapid movements represents body size-independent indices of muscle power. Physical education students (n = 159) were tested on various vertical jump (jump height and average power calculated from the ground reaction force) and muscle strength tests. When non-normalized data were used, a principal components analysis revealed a complex and inconsistent structure where jump height and muscle power loaded different components, while muscle strength and power partially overlapped. When the indices of muscle strength and power were properly normalized for body size, a simple and consistent structure of principal components supported the hypothesis. Specifically, the recorded height and muscle power calculated from the same jumps loaded the same components, separately for the jumps predominantly based on concentric actions and jumps based on a rapid stretch – shortening cycle of the leg extensors. The finding that the performance of rapid movements assesses the same physical ability as properly normalized tests of muscle power could be important for designing and interpreting the results of batteries of physical performance tests, as well as for understanding some basic principles of human movement performance.  相似文献   

13.
为进一步探讨我国花样滑冰运动的发展势态,采用文献资料、现场观察、数据统计等方法对第12届全国冬运会和第11届全运会花样滑冰单人滑比赛前6名运动员试做难度动作进行统计对比,发现：我国单人滑竞技能力呈上升势态,难度跳跃动作明显增多,对规则的理解更加深刻。提出提高难度技术动作的质量和稳定性,加强运动员的滑行速度和体能要求等建议,为花样滑冰运动训练提供理论参考。  相似文献   

14.
Figure Skating     
The purpose of this study was to compare triple (T) and quadruple (Q) toe‐loop figure skating jumps and quantify basic characteristics of these jumps to provide information to coaches that will assist them in teaching quadruple toe‐loops to elite figure skaters. High‐speed video was taken during men's practice and competition sessions at the 2002 Salt Lake City Winter Olympics; three‐dimensional analyses of selected triple and quadruple jumps were completed. The most significant difference between triple and quadruple toe‐loops was an increase in rotational velocity in the air. Additionally, increased vertical velocity at take‐off and subsequent time in the air were also observed. Three main conclusions were developed: 1) The timing of rotation of the hips and shoulders was different for quadruple toe‐loops compared to triples with the differences being observed before toe‐pick; 2) Increases in rotational velocity occurred primarily as a result of the skaters assuming different body positions from take‐off through landing which resulted in tighter rotating positions for longer durations of the jump; 3) Greater vertical velocity was gained during the propulsive phase due to the extension of the legs during the press off the ice.  相似文献   

15.
ABSTRACT

Self-talk enhances physical performance. Nothing is known however about the way that a subtle grammatical difference in self-talk, using first or second person pronouns, may effect performance. As second person self-talk supports self-regulation in non-exercise populations, we hypothesized that 10 km cycling time-trial performance would be superior following second versus first person self-talk. Using a randomized, counterbalanced, crossover design, sixteen physically active males (Mage = 21.99, SD = 3.04 years) completed a familiarization visit followed by a 10 km time-trial during two separate experimental visits using first and second person self-talk. A paired t-test revealed that second person self-talk generated significantly faster time-trial performance than first person self-talk (p = .014). This was reflected in a significantly greater power output throughout the time-trial when using second person self-talk (p = .03), despite RPE remaining similar between conditions (p = .75). This is the first evidence that strategically using grammatical pronouns when implementing self-talk can influence physical performance providing practitioners with a new aspect to consider when developing interventions. We discussed findings in the context of a self-distancing phenomenon induced by the use second person pronouns.  相似文献   

16.
女子单人滑是我国花样滑冰第一个获得世界冠军的项目,但继陈露之后再没有世界级的选手产生。2011年中国经过了新老选手的交替,耿冰娃代表中国参加了2011年的世界锦标赛,获得了第18名,将耿冰娃与世界前6名运动员成绩进行了比较分析,发现存在跳跃难度与多样性不够、旋转质量低、基础滑行差等差距。提出加强体能训练,加强跳跃技术训练、注意合理技术的运用、加强旋转技术训练、注意技术细节、强化基础滑行和步法的练习、加强文化课学习和进行表演课的训练等建议,为提高我国女子单人滑成绩和水平提供参考。  相似文献   

17.
Abstract

The purpose of this investigation was to examine whether levels of multidimensional intrinsic, multidimensional extrinsic motivation and amotivation could accurately discriminate scholarship status and gender in United States collegiate athletes. Participants comprised 82 male (M age?=?19.89, SD=1.39) and 90 female (M age?=?20.26, SD=1.63) collegiate athletes. Each participant completed a demographic questionnaire and the Sports Motivation Scale (Pelletier, L.G., Fortier, M.S., Vallerand, R.J., Tuson, K. M., Brière, N.M., & Blais, M.R. (1995). Toward a new measure of intrinsic motivation, extrinsic motivation, and amotivation in sports: The Sports Motivation Scale. Journal of Sport & Exercise Psychology, 17, 35–53). Two-group discriminant analysis revealed a significant canonical function correctly classifying 72.8% of the cases into either the scholarship or non-scholarship group. The least self-determined forms of extrinsic motivation were the strongest contributors to this discrimination. With respect to gender, a significant discriminant function existed, again with the least self-determined forms of extrinsic motivation representing the strongest discriminating variables. The results provide converging evidence that rewards such as scholarships can undermine intrinsic motivation. Further, as well as being consistent with theoretical predictions embedded in cognitive evaluation theory, the results of this study suggest that in addition to undermining intrinsic motivation, scholarships could foster non-self-determined forms of motivation.  相似文献   

18.

Purpose: The aim of this study was to ascertain the biomechanical differences between better and poorer performers of the vertical jump in a homogeneous group of children. Method: Twenty-four girls were divided into low-scoring (LOW; M age = 6.3 ± 0.8 years) and high-scoring (HIGH; M age = 6.6 ± 0.8 years) groups based on their performance on the vertical jump. The force-, velocity-, displacement-, and rate of force development (RFD)-time curves of vertical jumps were analyzed to determine the differences between groups. Results: The analysis of the data showed differences in the pattern of the ensemble mean curves of the HIGH and LOW groups, although the majority of the differences occurred during the eccentric contraction phase of the jump. The differences in the HIGH group with respect to the LOW group were: lower force at the beginning of the movement, higher speed and RFD during the eccentric phase, high force at the beginning of the concentric phase, higher velocity during the concentric phase, and a higher position at takeoff. Conclusion: The results showed that the HIGH group achieved a higher jump height than did the LOW group by increasing the effectiveness of the countermovement and achieving a more advantageous position at takeoff.  相似文献   

19.
Abstract

Researchers and clinicians have suggested that overuse injuries to the lower back and lower extremities of figure skaters may be associated with the repeated high impact forces sustained during jump landings. Our primary aim was to compare the vertical ground reaction forces (GRFs) in freestyle figure skaters (n = 26) and non-skaters (n = 18) for the same barefoot single leg landing on a force plate from a 20 cm platform. Compared with non-skaters, skaters exhibited a significantly greater normalised peak GRF (3.50 ± 0.47 × body weight for skaters vs. 3.13 ± 0.45 × body weight for non-skaters), significantly shorter time to peak GRF (81.21 ± 14.01 ms for skaters vs. 93.81 ± 16.49 ms for non-skaters), and significantly longer time to stabilisation (TTS) of the GRF (2.38 ± 0.07 s for skaters vs. 2.22 ± 0.07 s for non-skaters). Skaters also confined their centre of pressure (CoP) to a significantly smaller mediolateral (M–L) (25%) and anterior–posterior (A–P) (40%) range during the landing phase, with the position of the CoP located in the mid to forefoot region. The narrower and more forward position of the CoP in skaters may at least partially explain the greater peak GRF, shorter time to peak, and longer TTS. Training and/or equipment modification serve as potential targets to decrease peak GRF by distributing it over a longer time period. More comprehensive studies including electromyography and motion capture are needed to fully characterise the unique figure skater landing strategy.  相似文献   

20.
刘颖 《冰雪运动》2014,(4):16-23
阿克赛类型跳是花样滑冰6个主要单人跳跃各类之一,是6种主要跳跃中唯一的向前起跳动作,在比赛节目中占有重要的地位。阿克赛类型跳是运动员技术进阶的标志,也是相同周数中动作分值最高的动作。目前我国运动员在阿克赛跳跃上存在较大的技术问题,通过对几种常见技术错误进行分析、讨论,并提出改进的意见,以期解决当前中国花样滑冰运动员在阿克赛类型跳中引进阶段存在的技术问题。  相似文献   

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