Sport-specific Measures Research Articles

The Well-Being of Elite Volleyball Athletes: A Scoping Review of Methods Using Wellness Questionnaires

The purpose of the current review was to systematically and critically evaluate the subjective methods used to evaluate well-being of elite volleyball athletes. According to the results of this scoping review, there is a lack of comprehensive well-being assessment within the volleyball literature as the questionnaires used with these athletes primarily focus on stress, recovery, mood states, and anxiety. While general well-being measures can provide valuable insights, there is a need for measures that consider the unique experiences, challenges, and contexts of athletes. Also, there is an inconsistent definition of well-being in the volleyball literature. This can lead to a piecemeal approach, where different aspects of well-being are assessed in isolation, without a clear understanding of how they fit together. Therefore, to gain a more comprehensive understanding of volleyball athletes’ well-being, it is important to incorporate measures that assess subjective, psychological, and social well-being. In conclusion, while current assessment tools provide important insights into volleyball athletes’ well-being, there is a clear need for more holistic and sport-specific measures. By expanding an understanding and assessment of well-being, there can be better support for athletes’ overall health, satisfaction, and performance.

An Examination of the Latent Structure and Reproducibility of the Life Skills Scale for Sport in Botswana and Ghana.

With the growing interest in sport-based positive youth development (PYD) programs across the African continent, there is a need to establish suitable measures to evaluate the success of these programs in fostering PYD. The Life Skills Scale for Sport (LSSS) was recently developed as a sport-specific measure of life skills development. Despite its good psychometric properties among British youth sport participants, cross-cultural evidence indicates differences in the conceptualization of the eight factors measured by the LSSS. To determine the suitability of the LSSS for use in the African youth sport context, this study examined the latent structure and reproducibility of scores produced by the scale in a sample of youth sport participants from Botswana and Ghana. Cross-sectional data from a sample of 495 youth athletes (male = 51.72%), aged 12–21 years (M = 16.76, SD = 1.58), from junior and senior secondary schools was used in this study. Confirmatory factor analysis and exploratory structural equation modeling were conducted, and conventional fit indices were used to assess model fit. Results on the original LSSS model indicated the need for model re-specification in the current sample. A re-specified LSSS, consisting of the original eight factors, but only 34 of the original 43 items, demonstrated improved fit and adequate internal consistency. Scores derived from the re-specified LSSS proved to be a valid estimate of life skills development in the current sample of youth sport participants. This has important implications for the utility of the LSSS in different cultures.

Evidências de Validade e Perspectivas para Escalas de Resiliência no Esporte

Abstract The aim of this review was to identify the scales used to measure resilience in athletes and to assess their psychometric and semantic adaptations for the sporting context. An electronic search was conducted in six databases, for 2008-2019, and 43 articles were selected. The results showed 11 scales applied to evaluate resilience in athletes. In the semantic field, 11 factors were identified, conceptually different, that define the property of the psychological system for sports resilience. This study concluded that scales identified in literature to assess athletes’ resilience have been used indiscriminately. Only five had their psychometric properties evaluated for the sports context. Therefore, sport psychology lacks a sport-specific measure for resilience.

Enhancing parental support through parent-education programs in youth sport: a systematic review

ABSTRACT Parent-education programs in youth sport appear to provide an appropriate avenue to facilitate healthy parental involvement, enhance positive parental support, and help to relieve stressors placed on parents, coaches, and youth athletes. However, little is known about the efficacy, design, and evaluation methods utilized in parent-education programs in the youth sport context. The aims of the present systematic review were to examine: (1) the outcomes of parent-education programs which target psychosocial parental support; (2) the theoretical underpinnings of parent-education programs; and (3) measures utilized to evaluate parent-education programs in youth sport. A total of 12 articles met the inclusion criteria. All five quantitative studies yielded significant results. All three qualitative studies reported improvements in parents’ knowledge and skills. Only one mixed-methods study reported a significant result, however, qualitative data suggested positive changes in parent-athlete relationships. An examination of underlying theoretical frameworks revealed five studies (42%) explicitly stated how theory informed their interventions. Finally, there was an absence of sport-specific measures utilized to evaluate changes in parents’ behavior and involvement. Future researchers should consider adopting behavior change theories when designing and implementing parent-education programs, and seek to utilize validated sport-specific measures to examine changes in parents’ behaviors within the sporting context.

Development and Preliminary Validation of a Sport-Specific Self-Report Measure of Identity Foreclosure

A sport-specific, self-report measure of identity foreclosure was developed through a systematic process that included item pool generation, expert review, administration of items to a development sample of intercollegiate student athletes (N = 326), item evaluation, and administration of scales to validation samples of intercollegiate student athletes (N = 322, N = 54, and N = 64, respectively). The process yielded two four-item scales reflecting commitment to the occupational identity of athlete and one 4-item scale reflecting active exploration of roles other than that of athlete that (a) are internally consistent and temporally stable, (b) demonstrate preliminary factorial and convergent validity, and (c) can be used to create indices of identity foreclosure tailored to the sport context. The resulting Sport-Specific Measure of Identity Foreclosure has potential utility as an assessment tool for research and practice with athletes.

Performance Assessment for Rock Climbers: The International Rock Climbing Research Association Sport-Specific Test Battery

To examine the validity and reliability of a battery of 10 measures designed to assess the key physiological parameters for successful rock climbing performance. In phase 1 of the research, an expert panel, using the Delphi method, established a 10-item test battery based on the key determinants of climbing performance. In phase 2, the tests were assessed for validity and reliability to examine their suitability as sport-specific measures of rock climbing performance. A total of 132 rock climbers, from 7 countries, volunteered to take part in the study. Each climber visited their nearest laboratory on 3 separate occasions in order to enable the required tests and retests to be completed. A minimum of 7 days was allowed between visits. The 10 tests established for phase 2 were designed as sport-specific measures of flexibility, strength, power, and endurance. Results indicated that, while reliable, the flexibility and strength tests were only partially successful in differentiating across climber abilities. The power and endurance tests, however, performed well with regard to validity and reliability, with the finger hang and powerslap tests being most strongly correlated with performance ability (P < .0005 to P < .002). The authors' data suggest that climbing may require a threshold level of flexibility and strength for successful performance, beyond which further improvements may not be required. In contrast, the finger hang and powerslap tests were not only reliable measures but also differentiated between climber abilities from lower grade to elite levels.

The Optimum Power Load: A Simple and Powerful Tool for Testing and Training.

The optimal power load is defined as the load that maximizes power output in a given exercise. This load can be determined through the use of various instruments, under different testing protocols. Specifically, the "optimum power load" (OPL) is derived from the load-velocity relationship, using only bar force and bar velocity in the power computation. The OPL is easily assessed using a simple incremental testing protocol, based on relative percentages of body mass. To date, several studies have examined the associations between the OPL and different sport-specific measures, as well as its acute and chronic effects on athletic performance. The aim of this brief review is to present and summarize the current evidence regarding the OPL, highlighting the main lines of research on this topic and discussing the potential applications of this novel approach for testing and training. The validity and simplicity of OPL-based schemes provide strong support for their use as an alternative to more traditional strength-power training strategies. The OPL method can be effectively used by coaches and sport scientists in different sports and populations, with different purposes and configurations.

Mental Health Measurement in a Post Covid-19 World: Psychometric Properties and Invariance of the DASS-21 in Athletes and Non-athletes.

Psychological science faces a call to action researching the implications of the corona virus disease 2019 (Covid-19) pandemic. Rapid reviews have reported that maintaining rigorous research standards is a priority for the field, such as ensuring reliable and valid measurement, when investigating people’s experience of Covid-19 (O’Connor et al., 2020). However, no research to date has validated a measure mental health symptomology for an athlete population. The current research addresses this gap by examining the internal consistency, factor structure, invariance, and convergent validity of the Depression Anxiety and Stress Scale (DASS-21; Lovibond and Lovibond, 1995) in two athlete samples. Participants completed the DASS-21 and sport-specific measures of mental health such as the Profile of Mood States – Depression subscale (POMS-D), Sport Anxiety Scale-2 (SAS-2), Athlete Burnout Questionnaire (ABQ), and Athlete Psychological Strain Questionnaire (APSQ). In sample one (n = 894), results of exploratory structural equation modeling indicated that a three-factor model provided good fit to the data, but a bifactor model provided better fit. Factor loadings indicated minimal misspecification and higher loadings on the general-factor. Invariance testing suggested equivalence across gender, athletic expertise, sport type, and injury status. Further, latent mean differences analyses indicated that females and injured athletes scored higher than male and non-injured athletes on all DASS-21 factors reporting higher mental health symptomology, those with more expertise scored higher on the general-factor and depression and those with less expertise scored higher on anxiety and stress, and no differences between team and individual athletes. In sample two (n = 589), the bifactor structure was replicated. Results largely supported the scales convergent validity with depression predicting POMS-D scores, whereas all three subscales predicted the SAS-2, ABQ, and APSQ scores. Internal consistency was acceptable in both samples. The current work provides initial support for use of the DASS-21 as an operationalisation of mental health symptomology in athletes. Theoretical and practical implications of these results are discussed.

Deceleration, Acceleration, and Impacts Are Strong Contributors to Muscle Damage in Professional Australian Football.

Gastin, PB, Hunkin, SL, Fahrner, B, and Robertson, S. Deceleration, acceleration, and impacts are strong contributors to muscle damage in professional Australian football. J Strength Cond Res 33(12): 3374-3383, 2019-The purpose of this study was to investigate the relationships between serum creatine kinase [CK], an indirect marker of muscle damage, and specific indices of match load in elite Australian football. Twenty-six professional players were assessed during a competitive Australian Football League (AFL) season. [CK] was collected 24-36 hours before match and 34-40 hours after match during 8 in-season rounds. An athlete-tracking technology was used to quantify match load. Generalized estimating equations and random forest models were constructed to determine the extent to which match-load indices and pre-match [CK] explained post-match [CK]. There was a 129 ± 152% increase in [CK] in response to AFL competition. Generalized estimating equations found that number of impacts >3g (p = 0.004) and game time (p = 0.016) were most strongly associated with post-match [CK]. Random forest, with considerably lower errors (130 vs. 316 U·L), found deceleration, acceleration, impacts >3g, and sprint distance to be the strongest predictors. Pre-match [CK] accounted for 11% of post-match [CK], and considerable interindividual and intraindividual variability existed in the data. Creatine kinase, an indicator of muscle damage, was considerably elevated as a result of AFL competition. Parametric and machine-learning analysis techniques found several indices of physical load associated with muscle damage during competition, with impacts >3g and high-intensity running variables as the strongest predictors. [CK] may be used as a global measure of muscle damage in field team sports such as AF, yet with some caution given cost, invasiveness, and inherent variability. Quantifying physical load and the responses to that load can guide athlete management decision-making and is best undertaken within a suite of practical, sport-specific measures, where data are interpreted individually and with an understanding of the limitations.

Empirical Development of a Screening Method to Assist Mental Health Referrals in Collegiate Athletes

The conspicuous absence of validated screening measures specific to mental health symptomology in collegiate athletes has negatively affected clinical practice in this population. Therefore, this study was performed to develop a sport specific measure to optimally identify collegiate athletes who are particularly likely to benefit from mental health programming. Participants were 289 collegiate-athletes who were assessed for mental health symptomology using the Global Severity Index of Symptom Checklist-90-Revised (GSI), factors that interfere with sport performance using the Problems in Sport Competition Scale (PSCS) and Problems in Sport Training Scale (PSTS), and motivation to pursue professional counseling using the Desire to Pursue Sport Psychology Scale (DSPS). As hypothesized, a hierarchical multiple regression analysis indicated that PSCS, PSTS and DSPS scores significantly predicted GSI scores, controlling gender and sport status (NCAA, club, intramural). Receiver operating characteristic (ROC) analysis indicated that high-risk athletes (GSI T-scores ≥ 60) could be correctly classified by PSTS and PSCS scores. Results suggest the PSCS and PSTS may assist identification of collegiate athletes who are especially appropriate for mental health programs. These scales additionally identify factors directly relevant to athletes’ sport performance.

Measuring psychological need states in sport: Theoretical considerations and a new measure

ObjectivesResearch guided by Self-determination Theory (Deci & Ryan, 1985; Ryan & Deci, 2017) has repeatedly demonstrated the importance of focusing on both the bright (satisfaction) and dark (frustration) sides of the three basic psychological needs. Recently, researchers have also argued for the utility of assessing a third need state, that of “unfulfillment”. In this paper, we outline an effort to develop and provide initial validity evidence for scores of a new multidimensional and sport-specific measure, the Psychological Need States in Sport-Scale (PNSS-S), to assess the satisfaction, frustration, and unfulfillment of all three needs. MethodIn Study 1, we developed 46 candidate items, and tested evidence for the factorial structure of the responses to the newly developed items, internal consistency and discriminant validity of the subscale scores. Following refinement, the replication of the favored model was tested using an independent sample of athletes in Study 2. Evidence for the nomological network of the subscales of the new measure was also demonstrated in Study 2. ResultsFactor models incorporating all three need states showed poor fit with the data. However, following post-hoc modifications, a six-factor model assessing the need states of satisfaction and frustration, separately for autonomy, competence, and relatedness, was found to have good fit to the data. After refinement, the 29-item six-factor model was found to demonstrate good fit, good standardized factor loadings, factor correlations in the expected directions, and acceptable estimates of internal consistency in Study 2. Tests of nomological networks showed that the six need states were significantly predicted by contextual autonomy, competence, and relatedness support/thwarts as expected. Autonomy and competence need satisfaction were significantly associated with engagement; and competence and relatedness need satisfaction were significantly associated with positive affect. In addition, autonomy and competence need frustration were significantly associated with exhaustion and all three need frustration states significantly predicted negative affect. ConclusionsA tripartite conceptualization of the need states was not empirically supported. Nevertheless, the PNSS-S makes a unique contribution to the sport literature, as it represents the first sport-specific measure of six distinct, yet, correlated states of the satisfaction and frustration of autonomy, competence, and relatedness needs.

Coaches’ implementation strategies in providing social support to Singaporean university athletes: A case study

Coaches are effective providers of social support to their athletes. Although sport-specific measures of social support have been developed to better understand athletes’ perceptions of available support, limited amount of research has addressed how sport coaches implement specific social support strategies. The purpose of this study was to examine university coaches’ implementation strategies in providing various forms of social support to their athletes. A total of eight sport coaches from team and individual sports (four from each sport) were purposefully selected for this study. Coaches were individually interviewed. The interview transcripts were analysed using a thematic analysis. The results revealed that coaches from different sports shared similar strategies across emotional, esteem, informational and tangible dimensions, but with some distinguishable differences in the way these strategies were implemented. In documenting the lived experiences of sport coaches, key strategies valued highly among these coaches were highlighted, providing important implications for coaches to know how to incorporate these strategies into their coaching practice to better support athletes’ well-being and improve the quality of coaching. The findings also provide an implementation framework of social support that emphasizes key strategies for coaches to focus on in their coaching approaches.

Simulated skiing as a measurement tool for performance in cross-country sit-skiing

The International Paralympic Committee mandates the development of an evidence-based classification system, which requires a measure of performance. Performance in cross-country sit-skiing is mainly dependent on force generated during the poling phase and is enhanced by trunk flexion–extension movements. Since all sit-skiers have neuromuscular impairment, but different ability to control the trunk, this study aimed to verify if simulated action of poling on an adapted ergometer, together with a cluster analysis, could be used for grouping participants with different impairments according to their performance. On the ergometer, eight male and five female participants performed seven poling cycles at maximal speed, while sitting on personal sit-ski. Based on maximal speed, generated force, cycle characteristics, and trunk kinematics, cluster analysis divided participants into three groups showing good accuracy, sensitivity, and precision. Although a validation of this exploratory study is necessary, skiing on the ergometer could be considered as sport-specific measure of performance and may become an interesting tool in the development of an evidence-based classification system for cross-country sit-skiing.

Surgical outcomes for chronic exertional compartment syndrome following improved diagnostic criteria

IntroductionChronic exertional compartment syndrome (CECS) presents with pain during exercise, most commonly within the anterior compartment of the lower limb. A diagnosis is classically made from a typical history and...

Absorption in Sport: A Cross-Validation Study.

Absorption has been identified as readiness for experiences of deep involvement in the task. Conceptually, absorption is a key psychological construct, incorporating experiential, cognitive, and motivational components. Although, no operationalization of the construct has been provided to facilitate research in this area, the purpose of this research was the development and examination of the psychometric properties of a sport-specific measure of absorption that evolved from the use of the modified Tellegen Absorption Scale (MODTAS; Jamieson, 2005) in mainstream psychology. The study aimed to provide evidence of the psychometric properties, reliability, and validity of the Measure of Absorption in Sport Contexts (MASCs). The psychometric examination included a calibration sample from Scotland and a cross-validation sample from Australia using a cross-sectional design. The item pool was developed based on existing items from the modified Tellegen Absorption Scale (Jamieson, 2005). The MODTAS items were reworded and translated into a sport context. The Scottish sample consisted of 292 participants and the Australian sample of 314 participants. Congeneric model testing and confirmatory factor analysis for both samples and multi-group invariance testing across samples was used. In the cross-validation sample the MASC subscales showed acceptable internal consistency and construct reliability (≥0.70). Excellent fit indices were found for the final 18-item, six-factor measure in the cross-validation sample, = 197.486, p < 0.001; CFI = 0.957; TLI = 0.945; RMSEA = 0.045; SRMR = 0.044. Multi-group invariance testing revealed no differences in item meaning, except for two items. The MASC and the Dispositional Flow Scale-2 showed moderate-to-strong positive correlations in both samples, r = 0.38, p < 0.001 and r = 0.42, p < 0.001, supporting the external validity of the MASC. This article provides initial evidence in support of the psychometric properties, reliability, and validity of the sport-specific measure of absorption. The MASC provides rich research opportunities in sport psychology that can enhance the theoretical understanding between absorption and related constructs and facilitate future intervention studies.

The development and preliminary validation of the Challenge and Threat in Sport (CAT-Sport) Scale

This paper outlines the development and preliminary validation of a sport-specific measure of athletes’ experience of challenge and threat. Three independent studies assess the content validity, factor structure, criterion validity and internal consistency of the Challenge and Threat in Sport (CAT-Sport) Scale. In study 1, a group of 25 athletes and 2 experts assessed the content validity of items derived from existing measures of challenge and threat. Participants examined a pool of 25 items, and were asked to rate the items’ applicability to their experiences of challenge and threat in sport. Items failing to reach applicability of 50% were excluded from further analysis. In study 2, 197 runners completed the 21 items retained from study 1 before competition. A principal components analysis with an oblique, direct oblimin rotation yielded a 12-item, two-component solution with items indicative of athletes’ experiences of challenge and threat. In study 3, 201 shooters completed the 12-item CAT-Sport before competition. Confirmatory factor analysis indicated that a 12-item 2-factor correlated model provided acceptable model fit with good internal consistency and criterion validity. Collectively these studies provide support for the CAT-Sport as a measure of athletes’ experience of challenge and threat in anticipation of sport competition.

Relationship between moral disengagement in sport and prosocial and antisocial behaviors in Chinese athletes

Moral disengagement is a psychological process in which people use different cognitive strategies to justify their potentially problematic actions and to reduce feelings of shame and guilt. Athletes with high level of moral disengagement in sport may show more antisocial behavior and less prosocial behavior than other athletes. To date, most research investigating prosocial and antisocial behavior in sport has focused on behaviors directed at opponents. However, recent studies have also investigated prosocial and antisocial behavior within sport teams. Since the majority of past studies have been conducted in western countries, we know little about moral disengagement of Chinese athletes. Therefore, the purpose of the present study was to develop a valid and reliable measure of sport moral disengagement and to examine the relationship between sport moral disengagement and prosocial and antisocial behavior among Chinese athletes. Study 1 sought to develop a sport-specific measure of moral disengagement for Chinese athletes. Forty-eight items were developed based on content analysis of interviews with athletes and mass media reports of transgressions of athletes. Two hundred and fifty-four Chinese athletes were asked to rate their agreement with each item, and their responses were used exploratory factor analyses(EFA). Results showed that 20 items loaded on five factors:(1) conduct reconstrual,(2) advantageous comparison,(3) euphemistic labeling,(4) dehumanization, and(5) non-responsibility. After this, another 283 Chinese athletes filled in the questionnaire. The confirmatory factor analysis(CFA) indicated that the 5-factor solution was stable and the internal reliability of each of the factors was acceptable. Study 2 tested the relationship between moral disengagement in sport and prosocial and antisocial behavior towards teammates and opponents. Three hundred and six Chinese athletes responded to the 20-items moral disengagement questionnaire developed in Study 1 and the Chinese version of prosocial and antisocial behavior in sports scale(PABSS). Results from multivariate analysis of variance(MANOVA) and hierarchical regression analysis(HRA) showed that gender, type of sport, and competition level can predict antisocial behavior towards teammates and opponent(R2 = 0.11, F(3, 302)=12.88, p 0.01; R2 = 0.29, F(3, 302)=41.31, p 0.01) better than prosocial behavior towards teammates and opponents(R2 = 0.05, F(3, 302)=5.37, p 0.01; R2 = 0.06, F(3, 302)=6.23, p 0.01). Type of sport was the strongest predictor which negatively predicted antisocial behavior towards teammates and opponents(β =-0.29, t =-5.32, p 0.01; β =-0.49, t =-9.94, p 0.01). After controlling for gender, type of sport, and competition level, non-responsibility was the strongest predictor which can significantly and negatively predict prosocial behavior towards teammates and opponents(β =-0.31, t =-5.81, p 0.01; β =-0.28, t =-5.27, p 0.01); euphemistic labeling was the strongest predictor to positively predict antisocial behavior towards teammates(β = 0.23, t = 4.16, p 0.01); conduct reconstrual was the strongest predictor which could significantly and positively predict antisocial behavior towards opponents(β = 0.25, t = 5.33, p 0.01). The present study contributes to research into moral disengagement in sports by developing a valid measurement instrument for moral disengagement in Chinese athletes, and by analyzing the relationship between sport moral disengagement and prosocial and antisocial behavior towards teammates and opponents in Chinese athletes.

Using bifactor exploratory structural equation modeling to examine global and specific factors in measures of sports coaches' interpersonal styles.

In the present work we investigated distinct sources of construct-relevant psychometric multidimensionality in two sport-specific measures of coaches' need-supportive (ISS-C) and controlling interpersonal (CCBS) styles. A recently proposed bifactor exploratory structural equation modeling (ESEM) framework was employed to achieve this aim. In Study 1, using a sample of floorball players, the results indicated that the ISS-C can be considered as a unidimensional measure, with one global factor explaining most of the variance in the items. In Study 2, using a sample of male ice hockey players, the results indicated that the items in the CCBS are represented by both a general factor and specific factors, but the subscales differ with regard to the amount of variance in the items accounted for by the general and specific factors. These results add further insight into the psychometric properties of these two measures and the dimensionality of these two constructs.

Paralympic Classification: Conceptual Basis, Current Methods, and Research Update

Paralympic classification systems aim to promote participation in sport by people with disabilities by controlling for the impact of impairment on the outcome of competition. Valid systems of classification ensure that successful athletes are those who have the most advantageous combination of anthropometric, physiological, and/or psychological attributes, and who have enhanced them to the best effect. Classification systems that are not valid pose a significant threat to Paralympic sport and, therefore, the International Paralympic Committee (IPC) has a Classification Code which includes policy commitment to the development of evidence-based methods of classification. The aim of this article is to provide an overview of current best practice in classification for athletes with physical impairments, and to update research advances in the area. Currently, classification has 4stages: (1) establish whether the athlete has a health condition that will lead to one or more of the 8 eligible types of physical impairment, (2) determine whether the athlete has an eligible impairment type, (3) determine whether the impairment is severe enough, and (4) determine in what class theathlete should compete. A sequential 4-step process that outlines how to initiate and develop evidence-based methods of classification is described: (1) specification of impairment types that are eligible for the sport; (2) development of valid measures of impairment(s); (3) development of standardized, sport-specific measures of performance; and (4) assessment of the relative strength of association between measures of impairment and measures of performance. Of these, the development and reporting of valid measures of impairment is currently the most pressing scientific challenge in the development of evidence-based methods of classification.

Self- and Team-Efficacy Beliefs of Rowers and Their Relation to Mindfulness and Flow

The present study explored self- and team-efficacy beliefs in rowers, examining the relations between efficacy beliefs, mindfulness, and flow. Fifty-eight rowers from nine teams completed sport-specific measures of self- and team-efficacy, along with questionnaires assessing mindfulness, flow, sport anxiety, and sport confidence. Self- and team-efficacy were significantly related to mindfulness, dispositional flow, and sport confidence. In addition, both self-efficacy and sport confidence mediated the association between both total mindfulness (and the describe dimension of mindfulness) and the challenge-skill balance dimension of flow. These results provide indirect support for a proposed model, which suggests that mindfulness may positively impact the integral challenge-skill balance aspect of flow in athletes through self-efficacy.