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1.

Background

The evidence base for the treatment of adolescents with bulimia nervosa (BN) is limited.

Aims

To assess the feasibility, acceptability, and clinical outcomes of a web-based cognitive-behavioural (CBT) intervention for adolescents with bulimic symptomatology.

Method

101 participants were recruited from eating disorders clinics or from beat, a UK-wide eating disorders charity. The programme consisted of online CBT sessions (‘Overcoming Bulimia Online’), peer support via message boards, and email support from a clinician. Participants' bulimic symptomatology and service utilisation were assessed by interview at baseline and at three and six months. Participants' views of the treatment package were also determined.

Results

There were significant improvements in eating disorder symptoms and service contacts from baseline to three months, which were maintained at six months. Participants' views of the intervention were positive.

Conclusions

The intervention has the potential for use as a first step in the treatment of adolescents with bulimic symptomatology.  相似文献   

2.

Objectives

Grounded in self-determination theory (SDT; Deci & Ryan, 1985) and achievement goal theory (AGT; Nicholls, 1989), the present study examined the temporal stability and reciprocal relationships among three key variables related to motivation: perceived autonomy support from the coach, task-involving peer motivational climates, and athletes’ intrinsic motivation.

Design

A prospective longitudinal design with data collected on two occasions one year apart over the course of a youth training season.

Method

Young athletes (N = 362, age range 11-16 years) completed measures of the Sport Climate Questionnaire and the Peer Motivational Climate in Youth Sport Questionnaire. One-year later participants completed these questionnaires again along with the Sport Motivation Scale.

Results

Structural equation modeling indicated that perceived autonomy support from the coach and task-involving peer motivational climates exhibited comparatively high stability over a one-year period. In cross-lagged analyses, perceived autonomy support from the coach positively predicted task-involving peer climate one-year later but not vice versa. In addition, both social factors demonstrated a significant direct effect on athletes intrinsic motivation measured concurrently in sport contexts. Further, an alternative structural model supported a longitudinal direct effect of autonomy support from the coach and task-involving peer climate measured on the first occasion on subsequent intrinsic motivation.

Conclusion

Results demonstrated the value of perceived autonomy support from the coach and task-involving peer motivational climate in predicting athletes’ intrinsic motivation over a training year. Findings also suggest that perceived autonomy support from the coach can facilitate later task-involving peer motivational climate.  相似文献   

3.

Objectives

The purpose of this study was to explore the relative contributions of perceived parent and physical education teacher autonomy support, involvement, and modeling to adolescent leisure-time physical activity motivation and behavior within the framework of self-determination theory.

Design

Cross-sectional survey.

Method

161 Middle school students completed a paper survey which assessed the study variables.

Results

Three sets of models were tested that examined the relationships of autonomy support, involvement, and modeling from mothers, fathers, and physical education teachers to adolescent leisure-time physical activity self-determined motivation and behavior. In the models, each social support variable had a significant, positive, direct relationship to motivation, and a significant, positive, indirect relationship to physical activity behavior mediated by motivation. Further, the relationships between social support from each significant other and motivation were of similar magnitude.

Conclusions

Mothers and fathers both play modest, yet significant roles in their adolescent’s leisure-time physical activity motivation. Additionally, physical education teachers, although not present in the leisure-time physical activity context, serve an equally important role in supporting adolescents’ leisure-time physical activity. Lastly, adolescent self-determined motivation for leisure-time physical activity is a strong determinant of self-reported leisure-time physical activity behavior.  相似文献   

4.

Objectives

The study aimed to address the paucity of research pertaining to perceptions of causes of the home advantage. The views of three key personnel groups in football (soccer) were examined with regard to their perspectives.

Design and procedure

Players (n = 94), fans (n = 116) and referees (n = 163) completed a ten-item questionnaire on which they rated the contribution of the most prominent factors known to influence the home advantage.

Results

Factor analysis revealed three subscales (officials, player state and home environment) relating to explanations for the home advantage. A MANOVA examining the groups’ ratings for these three subscales found that the fans and player gave higher ratings for the contribution of officials and player state than did referees, while the fans gave higher ratings for the home environment.

Conclusion

The present study provides an insight into conceptualisations of the home advantage from the perspectives of different football groups. The relevance of self-enhancement, emanating from motivational and information processing mechanisms, is considered.  相似文献   

5.

Objectives

To examine quantity of exercise and motives for exercise as predictors of men in the military’s health and fitness level.

Design

Participants completed a survey to address research questions of interest.

Methods

One-hundred and fourteen men who were active duty Air Force members, with a mean age of 31.43 years (SD = 7.43) and an average military time in service of 10.66 years (SD = 7.75), completed a modified version of the Reasons for Exercise Inventory, a survey assessing their quantity of exercise, and reported their most recent score on their Air Force Fitness Test.

Results

Correlational analyses indicated a relation between quantity of exercise and men’s score on the Air Force Fitness Test and a relation between intrinsic motives for exercise and quantity of exercise. Intrinsic motivation was found to moderate the relation between quantity of exercise and men’s health and fitness score.

Conclusions

Men in the military who exercise because of their military obligation are less likely to score high on the Air Force Fitness Test than are men who are motivated to exercise for health benefits.  相似文献   

6.

Objectives

To review the effectiveness of school-based interventions with a physical activity component by measuring changes in psychological determinants, physical activity, and health outcomes.

Design

Systematic Review.

Method

We conducted a literature search of school-based controlled studies that involved a physical activity intervention targeting school students. Study design, methodological quality, and effectiveness of interventions on three target levels, ‘health and fitness’ (BMI and motor performance), ‘physical activity’, and ‘psychological determinants’ (knowledge of physical activity effects, self-concept, and attitudes towards physical activity), were analysed. Furthermore, we examined the influence of specific factors (e.g., age and gender) and mediator effects.

Results

The literature search identified 129 studies. The majority of the studies examining motor performance, physical activity, and knowledge of physical activity achieved significant results (69.7%, 56.8% and 87.5%, respectively). Significant effects on self-concept and attitudes were also found but to a smaller extent (in 30% and 43.8% of the studies, respectively). Only a few studies examining BMI (2.7%), physical activity (6.8%), and attitudes towards physical activity (12.5%) revealed negative effects, with better results observed for the control group. Intervention effects were influenced by the students’ age, intervention type, and frequency of the interventions. Self-efficacy was found to mediate the relationship between the program and the students’ physical activity.

Conclusions

Numerous school-based physical activity interventions achieved positive effects on three target levels. Further research is needed to clarify the mediator effects of psychological variables on physical activity and health and to increase our knowledge about the mechanisms that underlie behavioural change.  相似文献   

7.

Objectives

This study sought to determine whether learners’ self-efficacy and motor learning was affected by the type of feedback they were provided.

Method

Participants (N = 24, M age = 19.51 years, SD = 1.08) were randomly assigned into one of two groups: knowledge of result after good versus poor trials. The task included throwing a tennis ball with the non-dominate hand to a target while wearing vision distorting goggles. Participants completed the Self-Efficacy Scale (Bandura, 2006) before performing each block of 6 trials. A retention test without knowledge of results was conducted 24 h after the practice phase.

Results

The results demonstrated that learners’ motor learning was increased by providing knowledge of results after good rather than poor trials. Furthermore, the Self-Efficacy Scale results revealed that learners’ self-efficacy was enhanced by positive feedback.

Conclusions

The current findings indicate that positive feedback impacts learner’s self-efficacy, and enhances performance and motor learning.  相似文献   

8.

Objectives

The purpose of this study was to examine the antecedents, specificity, and ceiling effects of golfers’ implicit theories of sport ability.

Design

The present study employs a qualitative research design. A constructivist grounded theory methodology was adopted.

Method

Participants (N = 8) were asked to describe their conceptions of golf ability. All responses were recorded, transcribed, and the data were analyzed through a series of iterations, which led to the identification of three dimensions that constitute golfers’ beliefs about ability.

Results

The three dimensions were: acquirable ability, stable ability, and developing natural attributes. Categories within these dimensions offer initial evidence for the role of social agents and the inherent culture of golf in shaping co-existing beliefs in relation to sport ability. Beliefs with regards to ceiling effects of ability are reported, with one theme proposing a ceiling to sport ability, and a contrasting category exemplifying the belief that there is always room for improvement.

Conclusions

The present study contributes to the field by offering initial evidence for the antecedents, specificity, and ceiling effects of golfers’ conceptions of their sport ability. Implications, both theoretical in terms of future research, and practical with regards to practitioners’ role in educating athletes and cultivating an environment conducive to the perception that sport ability is acquirable, are offered.  相似文献   

9.

Objectives

This intervention study evaluated the effects of exercise in old age on views on one’s own aging and on direct approach motivation for physical activity. It further examined the mechanism between these variables.

Design

Two hundred forty-seven healthy women aged 70−93 years were randomized to an exercise course (n = 86), an active (n = 85), or a passive control group (n = 76) for a 6-month participation in Berlin, Germany. Activity interventions (3 × 1.5 h/wk) were conducted using standardized manuals.

Method

Group differences in changes of views on aging and direct approach were evaluated by analyses of covariance adjusted for baseline. A mediating effect of direct approach between exercise participation and views on aging was tested with percentile-based bootstrapping.

Results

In contrast to both the active and the passive control groups, higher direct approach, F(2, 226) = 6.97, p = .001, and less aging dissatisfaction, F(2, 225) = 5.39, p = .005, were observed in the exercise group after 6 months. Exercise had an indirect beneficial effect on aging dissatisfaction through direct approach, B = −0.31, 95% CI = −0.68 to −0.05.

Conclusion

In women above 70 years, exercise participation increases direct approach motivation which in turn leads to lower aging dissatisfaction. This shows that exercise holds the potential to overcome subjective ageist bias.  相似文献   

10.

Purpose

The aim of the study was to assess the effects of contextual and individual variables (perceived motivational climate and moral atmosphere, task/ego orientation and perceived competence) on antisocial behaviour and emotion-related psychobiosocial (PBS) states as conceptualised within the individual zones of optimal functioning model.

Participants

The study was conducted on a sample of 382 young male soccer players, aged from 14 to 16 years, drawn from 27 Italian teams.

Method

A cross-sectional design was used. Assessment included measures of reported antisocial behaviour, perceived moral atmosphere, perceived motivational climate, goal orientation, perceived competence, and PBS states. Data analysis involved confirmatory factor analysis of measures and path analysis of the hypothesized relationships.

Results

Results suggest that performance climate and a moral atmosphere, in which aggressive behaviours are encouraged, are likely to determine antisocial behaviour and a range of unpleasant PBS states in young sports participants.

Conclusions

Findings substantiate the importance of the situational factors on ethical aspects and emotional states in youngsters.  相似文献   

11.

Objectives

We aimed to examine social-contextual correlates of players’ developmental experiences in an elite youth soccer context. Specifically, we hypothesized that player perceptions of team cohesion and coach rapport would be positively associated with psychological need fulfillment. In turn, psychological need satisfaction was proposed to be positively related to adaptive developmental experiences in youth soccer (i.e., opportunities for leadership, emotional regulation, and goal setting), and negatively related to social exclusion.

Design

Cross-sectional.

Method

133 male elite soccer players, aged between 11 and 18 years old, completed a self-report questionnaire assessing the variables of interest.

Results

Using path analysis and bootstrapping methods, we found support for the overall model fit of the hypothesized conceptual framework and specific study hypotheses.

Conclusions

This study utilizes strong theoretical foundations to underscore the role of the coach and team environment in facilitating positive youth outcomes, and highlights a potential mechanism that may explain these processes.  相似文献   

12.

Objectives

This study aimed to explain how defenders intercept the trajectory of a passing ball by understanding how they coupled their actions to critical information sources in a competitive performance setting in team sports.

Design

Time series data on movement displacements of fifteen senior male futsal performers were recorded and digitized during nine competitive futsal games.

Method

Performance was recorded by a digital camera and digitized with TACTO software. The spatial-temporal dynamics of performers during ten intercepted and ten non-intercepted passes were compared. Time to ball interception was calculated by the difference between the time of each defender to an interception point in ball trajectory and the time of the ball’s arrival at the same interception point. Initial distances between defenders and ball and velocity data of defenders and ball over time were also recorded.

Results

Time to ball interception revealed positive values when passes were not intercepted, and negative to zero values when passes were intercepted. At the moment of pass initiation defenders’ distances to the ball constrained their possibilities for successful interception. Analysis of defenders’ adaptations to the environment revealed that continuous changes in the defenders’ velocities constrained their success of the interception.

Conclusions

Intercepted passes seemed to be influenced by the continuous regulation of a defender’s velocity relative to the ball’s trajectory. Time to ball interception is a variable that captured the emergent functional behaviours of players attempting to intercept the trajectory of a pass in the team sport of futsal.  相似文献   

13.

Objectives

In the present study, we tested a model examining the relationships between exercise imagery use, motivational regulations for exercise engagement, intention to exercise, and self-reported exercise behavior. This work represents an initial attempt to examine relationships between a new type of exercise imagery (enjoyment imagery) and motivational regulations for exercise.

Design

Cross-sectional.

Method

Exercisers with a mean age of 40.29 years (SD = 13.29; 177 female, 141 male) completed measures of the targeted variables.

Results

Structural equation modeling analyses revealed direct and indirect (via motivational regulations) links between imagery and exercise-related outcomes. Technique and enjoyment imagery were positively related to autonomous motivation. Conversely, appearance imagery was positively associated with controlled motivation. Direct relationships were evidenced between energy imagery and self-reported exercise behavior, and between appearance imagery and intention to exercise.

Conclusions

The potential motivational functions served by different exercise imagery types are discussed, and the inclusion of enjoyment imagery in future exercise imagery research is recommended.  相似文献   

14.

Objectives

Persisting at a task can temporarily reduce one’s ability to persist at subsequent tasks. This phenomenon is known as “ego depletion”. Although ego depletion has been linked to many cognitive tasks less is known about its effect on physical tasks. Even less is known about its effect on practiced physical performance associated with athletes. In modern sport science, the question as to whether or not ego depletion can reduce athletes’ persistence at practiced behaviour should be particularly important. Two experimental studies investigated if ego depletion can reduce athletes’ persistence at a routine physical exercise.

Design

In both experiments, a repeated measures design was employed.

Method

Competitive rowers (Experiment 1) and competitive hockey and rugby players (Experiment 2) attempted to complete as many press-ups (Experiment 1) or sit-ups (Experiment 2) as possible over two separate phases. In one phase, the participants attempted the physical exercise after completing an easy cognitive task. In the other phase, they attempted the physical exercise after completing a difficult cognitive task.

Results

Experiment 1 demonstrated that the competitive rowers completed fewer press-ups after completing a difficult cognitive task than they did after completing an easy task. Experiment 2 demonstrated that the competitive hockey and rugby players completed fewer sit-ups after completing a difficult cognitive task than they did after completing an easy cognitive task.

Conclusions

These findings indicate that athletes’ exercise routines are susceptible to ego depletion and that the strength model of self-regulation is applicable to athletic performance.  相似文献   

15.

Objectives

In this study we examined athletes’ stress appraisals, emotions, coping, and performance satisfaction ratings using a path analysis model. This is the first study to explore all of these constructs in a single study and provides a more holistic examination of the overall stressful experience that athletes encounter.

Design

Cross-sectional.

Methods

Participants were 557 athletes, aged between 18 and 64 years (M age = 22.28 years, SD = 5.72), who completed a pre-competition measure of stress appraisals and emotions. Participants also completed a coping questionnaire and a subjective performance measure after competing, with regards to how they coped during competition and how satisfied they were with their performance.

Results

Path analysis revealed that appraisals of uncontrollable-by-self, stressfulness, and centrality were positively associated with the relational meaning threat appraisals. Threat appraisals were associated with unpleasant emotions, prior to competition, and pre-ceded distraction- and disengagement-oriented coping. The pre-competition appraisals of controllable-by-self, centrality, controllable-by-others, and stressfulness were associated with challenge relational meanings, which in turn were linked to task-oriented coping during competition. Task-oriented coping was positively related to superior subjective performance.

Conclusions

Our findings support the notion that stress appraisals, emotions, and coping are highly related constructs that are also associated with performance satisfaction.  相似文献   

16.

Objective

To examine how working within Hanin’s (2000a) Individual Zone of Optimal Functioning theoretical model (IZOF) informs intervention development for enhancing athletes’ emotion regulation skills.

Design

A single case study design was adopted to examine the applied process of facilitating a female university cross-country runner’s emotion regulation skills.

Method

Consultant reflections followed Boud’s (2001) reflective learning model for immediate and delayed reflection that informed an action research narrative organized round Kellmann and Beckmann’s (2003) action research cycle. A social validation interview was conducted following program completion to examine the athlete’s responses to the emotion regulation intervention.

Results

Consultant’s professional practice decisions and action taken to support the intervention are highlighted. Specifically, the employment and extension of Hanin’s (2000c) IZOF profiling process to inform the development of athlete skills in emotion regulation are described. Moreover, how the content and intensity of performance related subjective emotion, physiological symptom, and cognitive zone profiles for optimal performance guided the identification and enhancement of techniques contributing to effective emotion regulation is illustrated. Athlete interview responses support the overall efficacy of the intervention program.

Conclusion

The present case study supports the efficacy of working within an IZOF framework from a consultant perspective. Furthermore, athlete reflections suggest enhanced skills in emotion regulation were perceived to result from the intervention.  相似文献   

17.

Objectives

Previous research studies examining parental influences on children’s physical activity (PA) have focused primarily on parents’ own PA behavior, as well as their PA-related beliefs and socially supportive behaviors. The present study, although aligned with this mainstream parental influence research, was grounded in a broader child development perspective to examine the influence of parenting style on children’s PA beliefs and quality of parent-child communication.

Method

Self-report questionnaires were administered to 173 children ranging in age from 9 to 12 years to assess their perceptions of parenting style, parent-child communication patterns, as well as their own perceptions of fitness competence, value, and goal orientation.

Results

Children’s constellation of beliefs and attitudes regarding PA as well as their perceptions of the parent-child communication process did vary as a function of the type of parenting style they perceived their parents to use. High challenge parenting style was linked to higher perceived fitness competence and value on the part of the children. High support parenting style was linked to more positive perceived parent-child communication patterns.

Conclusion

Parenting style may be a critical underlying family process variable that impacts children’s development of a positive constellation of beliefs about PA. Future work is needed to link parenting style and children’s PA beliefs to their PA behavior.  相似文献   

18.

Objectives

This study aimed to establish the prevalence, pattern and nature of coaches’ verbal behaviour at children’s (ages 6-12 years) team sports events. The study draws upon the motivational model presented by Mageau and Vallerand (2003) to examine the influence of global (gender), contextual (sport related), and social (athlete gender) factors on coach comments.

Design

A cross-sectional observational study of coaches stratified across four team sports: Rugby Union, Netball, Association Football and Touch Rugby.

Method

The Observation Instrument at Sports Events was used to categorise covertly recorded verbal comments made by coaches at organised team sports games.

Results

Overall, 10,697 comments were recorded at 72 games at a rate of 3.71 comments/minute; 35.4% were categorised as positive, 21.6% as negative, and 43.0% as neutral. Significant differences in negative comments were identified between sport (p < .001) with rugby coaches recording the highest percentage of negative comments and the lowest percentage of positive comments; by coach gender (p < .001), with male coaches recording higher rates of negative comments; and by athlete gender (p < .001), with coaches of male-only teams recording higher rates of negative comments. When simultaneously included in a Poisson regression model the difference in negative comments between sports remained statistically significant (p < .001) whereas coach gender was no longer significant.

Conclusions

The ratio of negative coach comments for all sports gives cause for concern. These findings suggest that sports of national and cultural significance are a key driver of coaching behaviours in a competitive environment.  相似文献   

19.

Objectives

In the sport context, the coach-athlete relationship has been viewed and studied as a universal phenomenon. It is thus important to assess the universality of the psychometric scale that is used to measure the quality of coach-athlete relationships. The present study examined the cultural equivalence or measurement invariance of the Coach-Athlete Relationship Questionnaire (11-item, athlete version CART-Q).

Design

Cross-sectional study.

Methods

A total of 1363 athletes from Belgium (N = 200), Britain (N = 382), China (N = 200), Greece (N = 115), Spain (N = 120), Sweden (N = 169), and United States of America (N = 177) completed the CART-Q.

Results

Multi-group mean and covariance structure (MACS) analyses supported the factorial validity of the CART-Q in a three-first-order factor model across the seven countries. An examination of the latent mean differences of the CART-Q revealed some variation in terms of the intensity that athletes perceive in the quality of the relationship with their coach across the different countries.

Conclusions

Overall, these results supply additional evidence of the psychometric properties of the CART-Q and highlight that it is a sound instrument that can be applied cross-culturally.  相似文献   

20.

Introduction

Depression is common in older people and its identification and treatment has been highlighted as one of the major challenges in an ageing world. Poor physical and cognitive health, bereavement, and prior depression are important risk factors for depression in elderly people. Attributional or cognitive style has been identified as a risk factor for depression in children, adolescents and younger adults but its relevance for depression and mood in elderly people has not been investigated in the context of other risk factors.

Method

Sixty-four older adults from an ‘extra care’ living scheme (aged 59-97) were recruited for a 6-week prospective study to examine the relationships between cognitive style and depressive symptoms.

Results

Regression analyses revealed that, when other risk factors were controlled for, cognitive style and its interaction with stress predicted changes in depressive symptoms, therefore partially replicating prior research.

Conclusion

Cognitive-stress-vulnerability models also apply to elderly populations, but may be rather predictive of changes in depression when facing lower levels of stress.  相似文献   

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