An introduction to latent growth models: analysis of repeated measures physical performance data

The purpose of this paper is to introduce the Latent Growth Model (LGM) to researchers in exercise and sport science. Although the LGM has several merits over traditional analysis techniques in analyzing change and was first introduced almost 20 years ago, it is still underused in exercise and sport science research. This statistical model can be applied to any repeated measures data, but it is most useful when one has an a priori hypothesis about the patterns of change. The strengths of latent growth modeling include: (a) both individual and group levels of change are estimated, (b) either a linear or a curvilinear trajectory can represent individual change, (c) occasions of measurement need not be equally spaced, (d) the statistical model can account for measurement errors, (e) the model can easily include multiple predictors or correlates of change, and (f) as in general structural equation models, statistical models are flexible and allow one to extend the basic idea in several ways, such as comparing changes between groups and examining the change in multivariate latentfactors. In this paper, the basics and an extension of latent growth modeling are explained, and examples with longitudinal physical performance data are presented, along with detailed analysis procedures and considerations.     

Meta-analysis in sport and exercise research: Review,recent developments,and recommendations

Abstract

The purpose of this article is to provide a general overview of the principles and practice of conducting quantitative psychometric meta-analytic reviews in the sport and exercise sciences and highlight some of the recent developments and recommendations from researchers regarding the conduct and validity of meta-analytic methods. After outlining the historical context, the general principles involved in a quantitative cumulation of research findings across empirical studies is reviewed. Subsequently, recent controversies and issues surrounding the use of meta-analysis are reviewed with examples provided from the sport and exercise psychology literature. Specifically, the basis for and selection of meta-analytic models (use of fixed vs. random effects models), the treatment of data from theories that explicitly demand testing the effects of multiple independent variables on a dependent variable (use of multiple regression), and how to treat studies that contain multiple tests of a given effect (use of averaging and structural equation modeling methods) are covered. Recommendations are provided for researchers conducting meta-analytic studies based on these issues.     

Research methods in sport and exercise psychology: quantitative and qualitative issues

Contemporary aspects of research methods in sport and exercise psychology are discussed in this wide-ranging review. After an introduction centred on trends in sport and exercise psychology methods, the review is organized around the major themes of quantitative and qualitative research. Our aim is to highlight areas that may be problematic or controversial (e.g. stepwise statistical procedures), underused (e.g. discriminant analysis), increasingly used (e.g. meta-analysis, structural equation modelling, qualitative content analysis) and emergent (e.g. realist tales of writing). Perspectives range from the technical and speculative to the controversial and critical. While deliberately not providing a 'cookbook' approach to research methods, we hope to provide enough material to help researchers to appreciate the diversity of potential methods and to adopt a more critical perspective in their own research consumption and production.     

Charting the development of sport expertise: challenges and opportunities

This review poses three key issues that will progress our understanding of the sport expertise literature and its translational scientific impact. Primarily relying on research conducted in interceptive sport tasks, and to a lesser extent team sports, we review the perceptual-cognitive skills of sports experts and explore the challenge of designing a sufficiently representative task to examine expertise. We focus on the methodological challenges presented by the reciprocal relationship between players’ action capabilities and their perceptual-cognitive skill. Second, we consider the need for a paradigm shift in the experimental approach used when examining the development of sport expertise. In short, a shift from traditional expert-novice designs to more prospective longitudinal designs that cross-sectionally track the development of expertise is discussed. The final issue considers how the volume of in situ data now collected provides a rich source of information that sport expertise researchers have only begun to consider and integrate with more traditional sport psychology research. We demonstrate how statistical approaches that have described the likely trajectories of expert performers on their journey toward expertise coupled with more traditional qualitative experimental approaches can provide useful insights into the development of psychological performance skills and more broadly sport expertise.     

Desktop research – bibliographic databases and electronic journals

Contemporary aspects of research methods in sport and exercise psychology are discussed in this wide-ranging review. After an introduction centred on trends in sport and exercise psychology methods, the review is organized around the major themes of quantitative and qualitative research. Our aim is to highlight areas that may be problematic or controversial (e.g. stepwise statistical procedures), underused (e.g. discriminant analysis), increasingly used (e.g. meta-analysis, structural equation modelling, qualitative content analysis) and emergent (e.g. realist tales of writing). Perspectives range from the technical and speculative to the controversial and critical. While deliberately not providing a ‘cookbook’ approach to research methods, we hope to provide enough material to help researchers to appreciate the diversity of potential methods and to adopt a more critical perspective in their own research consumption and production.     

Latent growth curve modeling in exercise science

ABSTRACT

Longitudinal measurement enables the examination of behavioral or psychological change. One approach to examining longitudinal measurements is the use of latent growth curve modeling (LGCM). This approach affords the assessment of inter- and intraindividual change. Yet, this approach likely is underused in exercise science. The purpose of the current study was to describe and demonstrate the use of LGCM to examine change using multiple measurements in the field of exercise science. We first provide a substantive review of LGCM. We highlight the use of unconditional models to find an appropriate model of change, how and why to utilize autoregressions, and how to examine predictors of change in conditional models. We then provide an illustration of the approach using data from the Michigan State Motor Performance Study. In the conclusion, we discuss the advantages and limitations of the approach and suggest future directions when assessing longitudinal data in exercise science.     

运动心理测量研究进展(2008-2011)

对2008-2011年初国内外运动心理测量的研究进行系统的梳理和文献学分析.结果表明:(1)心理测量的方法并不过时,仍是运动心理学研究的主要方法之一;(2)国外学者运用心理测量法研究的比例高于我国学者;(3)新编或新修量表仍以竞技运动心理为主,锻炼心理次之,体育心理较少,我国学者相对更重视体育心理测量工具的研发;(4)国外学者相对更为重视竞技心理的研究,而我国学者更为重视锻炼心理领域的研究;(5)中外心理测量研究的水平相当,量表研究的质量参差不齐.为迸一步提高我国量表研修的质量,提出以下建议:(1)尽力提供更多的信效度参数,努力提升数据的质量;(2)量表研究的理论基础应该加强;(3)充分发挥因子分析的作用,统计参数的表达应更加规范;(4)更多地以积极心理学为导向对心理健康进行测量.     

Multiple Time Scale Models in Sport and Exercise Science

In sport and exercise research, examining both within- and between-individual variation is crucial. The ability to investigate change both within competitive events and across a competitive season is a priority for many sport researchers. The aim of this article is to demonstrate an approach to analyzing intensive longitudinal data collected through time-scale-dependent longitudinal designs. Following didactic presentation of the approach, two illustrations from secondary data analysis are used to describe the modeling process in detail. Illustration 1 includes affective response data from an exercise intervention randomized pilot study. Illustration 2 uses referee and player distance data collected during professional soccer games in the English Premier League. Each illustration describes a process for testing and comparing multiple time scale models based on the three-level multilevel model, and results are interpreted. In the discussion, advantages and limitations of the approach are highlighted.     

Sport development and physical activity promotion: An integrated model to enhance collaboration and understanding

As inactivity and obesity levels continue to rise, calls are being made for sport development action to be further directed towards capitalising on the value of community participation for health and social benefits. This paper seeks to highlight a current disconnect between physical activity and sport management research, and identify opportunities for collaboration. To date, the sport management literature has predominantly focused on sport as a form of entertainment with spectatorship outcomes, where professional codes are a commonly used setting of research inquiry. There has been less focus on organisational issues related to participation in sport and recreation. This is identified as a gap, given the current push towards increasing focus on sport and recreation promotion for community wellbeing. The present paper sought to examine physical activity and sport management research, to identify commonalities and potential for integration and co-operation. The outcome of this review is a conceptual framework, integrating socio-ecological models, taken from physical activity research, and sport development concepts derived from sport management theory. The proposed conceptual framework seeks to provide sport management researchers with direction in their efforts to promote participation in sport, recreation and physically active leisure domains, particularly for community wellbeing purposes. Furthermore, such direction may also enhance the capacity of researchers to capitalise on opportunities for collaboration and integration across domains of inquiry.     

Narrative inquiry: ongoing conversations and questions for sport and exercise psychology research

Narrative inquiry, as one form of qualitative research, has recently attracted some interest within the field of sport and exercise psychology. Seeking to be theoretically imaginative and instigate dialogue, this article focuses attention on five main issues within ongoing conversations among sport and exercise psychology researchers who promote and/or engage in narrative research. Theoretically inspired and grounded, these interrelated issues include, motivations for why researchers have turned to narrative, the concept of ‘the self’, interviewing, the issue of ‘truth’, and representation. Some implications of these issues for sport and exercise psychology are also highlighted. The article closes with some reflections about the future directions that narrative inquiry might take.     

Social physique anxiety experiences in physical activity: a comprehensive synthesis of research studies focused on measurement,theory, and predictors and outcomes

Physical activity (PA) settings such as sport, exercise, and physical education are inherently social and evaluative in nature, with much attention directed at how the body looks and performs. As such, these settings foster a host of positive and negative emotional experiences. Social physique anxiety (SPA) is a commonly studied emotion that emanates from, or motivates, PA behaviors. In this synthesis of the 126 identified research papers focused on SPA and related experiences in sport, exercise, and physical education, we summarize the theoretical roots and measurement of SPA, present research evidence on predictors and outcomes of SPA experiences, explore links between SPA and PA behaviors, and offer insight on the future directions of SPA research. Specifically, researchers in sport and exercise psychology are encouraged to broaden the study of SPA to conduct longitudinal and experimental studies, develop quality intervention strategies aimed at reducing SPA experiences, and expand on the theoretical and operational understandings of SPA experiences across the lifespan.     

Trends and knowledge base in sport and exercise psychology research: a bibliometric review study

Bibliometric methods were used to examine: (1) research themes in sport and exercise psychology articles published between 2008 and 2011; and (2) the intellectual base of the field of sport and exercise psychology, defined as influential literature being cited in these articles. The dataset consisted of 795 articles from five sport and exercise psychology journals and 345 articles obtained through citation-based extension (n = 1140 articles). A cluster analysis yielded 73 clusters showing themes in sport and exercise psychology research. Principal component analysis was used to identify and analyze relationships between 14 highly cited research areas constituting the intellectual base of sport and exercise psychology. Some main findings were: (1) the identification of many re-emerging themes, (2) research related to motivation seems to be extensive, (3) sport psychology and exercise psychology research share theoretical frameworks to some extent, however (4) differences compared to previous reviews indicate that sport psychology and exercise psychology may be regarded as two distinct research fields, rather than one united field, and (5) isolated research areas were identified indicating potential for research integration. Suggestions for future research are provided. The bibliometric approach presented a broad overview of trends and knowledge base in sport and exercise psychology research.     

Psychological resilience in sport performers: a review of stressors and protective factors

Abstract

Psychological resilience is important in sport because athletes must utilise and optimise a range of mental qualities to withstand the pressures that they experience. In this article, we discuss psychological resilience in sport performers via a review of the stressors athletes encounter and the protective factors that help them withstand these demands. It is hoped that synthesising what is known in these areas will help researchers gain a deeper profundity of resilience in sport, and also provide a rigorous and robust foundation for the development of a sport-specific measure of resilience. With these points in mind, we divided the narrative into two main sections. In the first section, we review the different types of stressors encountered by sport performers under three main categories: competitive, organisational and personal. Based on our recent research examining psychological resilience in Olympics champions, in the second section we discuss the five main families of psychological factors (viz. positive personality, motivation, confidence, focus, perceived social support) that protect the best athletes from the potential negative effect of stressors. It is anticipated that this review will help sport psychology researchers examine the interplay between stressors and protective factors, which will, in turn, focus the analytical lens on the processes underlying psychological resilience in athletes.     

Well-being in competitive sports—The feel-good factor? A review of conceptual considerations of well-being

This paper summarizes the topic of well-being as it applies to competitive athletes, with a particular focus on definitional and conceptual issues. Established definitions within research on human happiness and flourishing based on the hedonic and eudaimonic perspectives are contrasted against definitions applied within sport psychology. The majority of the reviewed sport psychology studies either failed to define well-being or used a variety of labels to describe the construct (e.g., subjective well-being, psychological well-being, mental well-being). A large number of assessments have been used to assess well-being among athletes, but most were applied with only a weak theoretical rationale and did not distinguish between well-being at the global and sport levels. It is concluded that well-being studies within sport psychology have been hampered by conceptual ambiguity, which makes it difficult to compare results across studies and generalize findings in order to develop a sound theoretical base of knowledge. Future research needs to more explicitly define the conceptual framework of well-being and the level (global or context-specific) on which the construct is investigated. Toward this goal, an integrated model is presented to provide a conceptual well-being structure in sport studies, and future directions for research are discussed.     

Biomagnetism: a new tool in sport and exercise science

Biomagnetometry is a non-invasive technique for detecting magnetic fields associated with the electrophysiology and magnetic susceptibility of body tissues. The aims of this paper are to provide a review of the discipline of biomagnetism and its measurement using a superconducting quantum interference device (SQUID), and to discuss the potential utility of this technique in sport and exercise science. A tutorial section is presented to provide an introduction to the theory and practical application of SQUID biomagnetometry. A review of the biomagnetism literature demonstrates the variety of previous biomagnetic investigations and suggests several potential applications of biomagnetometry in sport and exercise science. A discussion of these includes an assessment of the advantages of measuring biomagnetic fields as opposed to electrical potentials, with particular reference to the improved precision and accuracy of physiological source modelling using biomagnetic data. There is evidence to suggest that SQUID biomagnetometry would provide useful (and perhaps unique) information on functional, anatomical and physiological assessments in sport and exercise science. Further investigations of biomagnetometry in this discipline should focus on three main areas: cardiology, encephalography and neurology, and body composition assessment.     

Perceptions of change and certainty regarding the self-as-exerciser: a multistudy report

The purpose of these studies was to examine the relationship between perceptions of exercise-related changes (i.e., perceived mastery and physical change) and certainty with regard to the self-as-exerciser. It was hypothesized that seeing "change" would be associated with more favorable levels of exercise self-certainty and behavior relative to "no change." Online surveys were repeatedly administered across 4 months (Study 1) and 4 weeks (Study 2) to 196 university students (M(age) = 20.17), and 250 community dwellers (M(age) = 38.44), respectively. Data were analyzed via latent variable modeling procedures. Consistent with hypotheses, latent classes (i.e., subgroups) reflecting interindividual differences in levels and trajectories of perceived change were associated with distinct patterns of self-certainty and exercise behavior. The findings suggest that adults who experience mastery of skills and physiological changes also have greater self-certainty and exercise more regularly than those who do not see progress or feel as certain of their exercise identity.     

Developing rigor in qualitative research: problems and opportunities within sport and exercise psychology

Qualitative research has grown within sport and exercise psychology and is now widely conducted. The purpose of this review is to discuss three commonly used ways to demonstrate rigor when conducting or judging qualitative research in sport and exercise psychology. These are the method of member checking, the method of inter-rater reliability, and the notion of universal criteria. Problems with each method are first highlighted. Member checking and inter-rater reliability are shown to be ineffective for verification, trustworthiness, or reliability purposes. Next, universal criteria within the context of Tracy’s, heavily drawn on paper within sport and exercise psychology is problematized. Throughout the discussion of each method and universal criteria more suitable possibilities for conducting rigorous qualitative research are offered. The paper concludes that to support high-quality qualitative research, scholars – including journal editors and reviewers – need to change how rigor is developed and judged, rather than perpetuate the problems with how it has been commonly evaluated in the past. Recommendations for developing rigor when conducting and/or judging qualitative research within sport and exercise psychology are also offered.     

Psychometric Properties of the Abbreviated Perceived Motivational Climate in Exercise Questionnaire

The purpose of this study was to develop an abbreviated version of the Perceived Motivational Climate in Exercise Questionnaire (PMCEQ-A) to provide a more practical instrument for use in applied exercise settings. In the calibration step, two shortened versions’ measurement and latent model values were compared to each other and the original PMCEQ using a three-group CFA invariance testing approach with previously collected exercise setting data (N = 5,427). Based on the model fit and reliability values, the 12-item version performed better than the 17-item version. The resultant 12-item PMCEQ-A’s CFA model estimates were then compared to the PMCEQ’s model values for two different, previously conducted studies of exercise settings (N = 414 and 770). The more parsimonious 12-item PMCEQ-A can be used by exercise psychology researchers to gain insight into members’ perspectives on the motivational climate and may lead to developing effective strategies to enhance members’ experiences and commitment.