A review of return to sport concerns following injury rehabilitation: practitioner strategies for enhancing recovery outcomes

ManuscriptObjectives: Evidence suggests that competitive athletes returning to sport following injury rehabilitation may experience a range of psychosocial concerns. The purpose of this paper is to review some of the psychosocial stresses common among returning athletes and to provide practitioner strategies for enhancing recovery outcomes. Evidence Acquisition: Findings are based on a database search of Sport Discus, Psychinfo, and Medline using sport injury, fear of re-injury, return to full activity. Results: Salient apprehensions among athletes' returning to sport following injury were found to include: anxieties associated with re-injury; concerns about an inability to perform to pre-injury standards; feelings of isolation, a lack of athletic identity and insufficient social support; pressures to return to sport; and finally, self-presentational concerns about the prospect of appearing unfit, or lacking in skill in relation to competitors. Conclusions: The results suggest that athletes returning to sport from injury may experience concerns related to their sense of competence, autonomy and relatedness. Given its focus on competence, autonomy and relatedness issues, self-determination theory (SDT) is offered as a framework for understanding athlete concerns in the return to sport from injury. Practical suggestions for sport medicine practitioners, researchers and applied sport psychology specialists seeking to address athlete issues are provided using an SDT perspective

Realisation of a hot carrier photovoltaic cell

The hot carrier solar cell is a heat engine; supplementing or supplanting the photovoltaic action of a traditional solar cell with a thermally driven current, analogous to a thermoelectric device. With this additional channel for energy extraction it is, in principle, possible for these cells to achieve efficiencies up to 85%, since the thermalization loss of high energy carriers is mitigated through their contribution to the heat current. In this thesis, three different hot carrier solar cell concepts are presented and experimentally investigated to probe their efficacy. Firstly, a hot carrier solar cell structure is presented, in which photogenerated carriers are extracted from a narrow band gap semiconductor to a wider bandgap semiconductor through a double barrier quantum well, providing energy selective extraction through resonant tunnelling. Current-voltage characteristics of this cell are presented along with time-resolved and temperature-dependent photoluminescence data, supporting the conclusion that this cell is operating as a hot carrier cell. Secondly, the idea of a metallic absorber for a solar cell is proposed, in order to provide ultra-high absorption of light (>99%) in metallic films thinner than 10nm. This idea is realised in two different cells, with silver and chromium absorbers. The absorption of light in the metal film, followed by extraction of heated electrons over a Schottky barrier, is demonstrated. Thirdly, the combination of these ideas is discussed, and a solar cell with a metallic absorber and selective extraction of heated electrons through resonant tunneling is realised. The current-voltage characteristics of all cells are modelled theoretically, and key signatures are revealed in both experimental and theoretical work showing the extraction of heated carriers.Open Acces

The effect of variety expectations on interest, enjoyment, and locus of causality in exercise

ManuscriptMost attempts to influence intrinsic motivation have focused on contextual support for basic need satisfaction, including the provision of autonomy support, structure, and interpersonal involvement (e.g., Edmunds et al. in Eur J Soc Psychol 38:375-388, 2008). This study explored the extent to which another factor, expectations for task variety, influenced interest, enjoyment, and locus of causality in a novel exercise setting. Results showed that participants exposed to messages about variety in an exercise class enjoyed the class more, found it more interesting, and perceived greater internal causality than those who received messages about similarity in the class. Moderator analyses indicated that expectations of task variety were particularly conducive for task interest among participants who usually demonstrated lower intrinsic motivation for exercise. Discussion focuses on the relevance of these findings to self-determination theory and on opportunities for future research

Persuading others to avoid persuasion: inoculation theory and resistant health attitudes

Inoculation theory, a theory of conferring resistance to persuasive influence, has established efficacy as a messaging strategy in the health domain. In fact, the earliest research on the theory in the 1960s involved health issues to build empirical support for tenets in the inoculation framework. Over the ensuing decades, scholars have further examined the effectiveness of inoculation-based messages at creating robust positive health attitudes. We overview these efforts, highlight the structure of typical inoculation-based health messages, and describe the similarities and differences between this method of counter-persuasion and other preparatory techniques commonly employed by health researchers and practitioners. Finally, we consider contexts in which inoculation-oriented health messages could be most useful, and describe how the health domain could offer a useful scaffold to study conceptual issues of the theory

Music listening predicted improved life satisfaction in university students during early stages of the COVID-19 pandemic

Quarantine and spatial distancing measures associated with COVID-19 resulted in substantial changes to individuals’ everyday lives. Prominent among these lifestyle changes was the way in which people interacted with media—including music listening. In this repeated assessment study, we assessed Australian university students’ media use (i.e., listening to music, playing video/computer games, watching TV/movies/streaming videos, and using social media) throughout early stages of the COVID-19 pandemic in Australia, and determined whether media use was related to changes in life satisfaction. Participants (N = 127) were asked to complete six online questionnaires, capturing pre- and during-pandemic experiences. The results indicated that media use varied substantially throughout the study period, and at the within-person level, life satisfaction was positively associated with music listening and negatively associated with watching TV/videos/movies. The findings highlight the potential benefits of music listening during COVID-19 and other periods of social isolation

Psychological Flow Scale (PFS): Development and Preliminary Validation of a New Flow Instrument that Measures the Core Experience of Flow to Reflect Recent Conceptual Advancements

In this study, we sought to develop—and provide preliminary validity evidence for scores derived from—a new Psychological Flow Scale (PFS). We propose a parsimonious model of three core dimensions of flow, reflecting the findings from a recent scoping review that synthesised flow research across scientific disciplines. The validation process for the PFS addressed recent conceptual criticisms of flow science regarding construct validity, theoretical compatibility, relational ambiguity, and definitional inconsistency. An initial review and analysis of the many flow measurements that exist found that these instruments either assess one, some, or none of the three core-dimensions of flow; often measuring similar dimensions that may bear resemblance to one of the three-dimensions but differ in dimensional meaning. PFS item development involved a phase of theoretical scrutiny, review of existing instruments, item generation, and expert review of items. Subsequently, 936 participants were recruited for scale development purposes, which included sample testing, exploratory factor analysis, and confirmatory factor analysis. This factor analytic process showed evidence for three distinguishable dimensions ‘under’ a single general or higher-order factor (i.e., global flow). With respect to external aspects of validity, flow scores correlated positively with perceptions of competence, self-rated performance, autotelic personality, and negatively with anxiety and stress scores. In conclusion, we present preliminary evidence for the theoretical and operational suitability of the PFS to assess the flow state across scientific disciplines and activity domains that be useful for experimental research and enable comparative flow research in the future

The effects of formalized and trained non-reciprocal peer teaching on psychosocial, behavioral, pedagogical, and motor learning outcomes in physical education

Peer teaching is recognized as a powerful instructional method; however, there is a paucity of studies that have evaluated the outcomes experienced by peer-teachers and their student recipients in the context of trained, non-reciprocal, high school physical education (PE). Accordingly, the effectiveness of a formalized and trained non-reciprocal peer teaching (T-PT) program upon psychosocial, behavioral, pedagogical, and student learning outcomes within high school PE classes was investigated. Students from eight intact classes (106 males, 94 females, Mage = 12.46, SD = 0.59) were randomly assigned to either a T-PT intervention group (taught by a volunteer peer-teacher who was trained in line with a tactical games approach) or untrained group (U-PT; where volunteer peer-teachers received no formal training, but did receive guidance on the game concepts to teach). Data were collected over 10 lessons in a 5-week soccer unit. Mixed-model ANOVAs/MANOVAs revealed that, in comparison to U-PT, the T-PT program significantly enhanced in-game performance actions and academic learning time among student recipients. Those in the T-PT also provided greater levels of feedback and structured learning time, as well as reporting more positive feelings about peer teaching and fewer perceived barriers to accessing learning outcomes. These findings show that non-reciprocal peer-teachers who receive formalized support through training and tactical games approach-based teaching resources can enhance behavioral, pedagogical, and motor performance outcomes in PE

Factors influencing the health behaviour of Indigenous Australians: perspectives from support people

Disparities between the health of Indigenous and non-Indigenous populations continue to be prevalent within Australia. Research suggests that Indigenous people participate in health risk behaviour more often than their non-Indigenous counterparts, and that such behaviour has a substantial impact on health outcomes. Although this would indicate that reducing health risk behaviour may have positive effects on health outcomes, the factors that influence Indigenous health behaviour are still poorly understood. This study aimed to interview people who support Indigenous groups to gain an understanding of their views on the factors influencing health behaviour within Indigenous groups in Western Australia. Twenty nine people participated in the study. The emergent themes were mapped against the social ecological model. The results indicated that: (1) culture, social networks, history, racism, socioeconomic disadvantage, and the psychological distress associated with some of these factors interact to affect health behaviour in a complex manner; (2) the desire to retain cultural identity and distinctiveness may have both positive and negative influence on health risk behaviour; (3) strong social connections to family and kin that is intensified by cultural obligations, appears to affirm and disrupt positive health behaviour; (4) the separation between Indigenous and non-Indigenous social connection/networks that appeared to be fostered by marginalisation and racism may influence the effect of social networks on health behaviour; and (5) communication between Indigenous and non-Indigenous people may be interrupted by distrust between the groups, which reduces the influence of some non-Indigenous sources on the health behaviour of Indigenous people

Psychological flow training: Feasibility and preliminary efficacy of an educational intervention on flow

Despite there being an increasing number of applied flow studies across scientific disciplines, there exists no consistent or broadly applicable intervention to promote flow experiences. This study provides a detailed account of a new educational flow training program developed following recent advancements in the flow literature that have provided a more parsimonious understanding of flow experiences and antecedents. Guided by CONSORT guidelines for feasibility trials, we conducted a single-group, non-randomized feasibility trial of an educational flow training program (N = 26). We assessed participant retention, perceptions about and experiences of the program, perceptions about the flow education training, and preliminary assessments of flow as an outcome. Results broadly supported program feasibility, and participants reported positive experiences in, and perceptions of, program components. In terms of preliminary efficacy, we observed evidence of noteworthy change pre-to-post-program in flow (d = 0.84), performance (d = 0.81), competence (d = 0.96), well-being (d = 0.68), intrinsic motivation (d = 0.47), interest (d = 0.72), choice (d = 0.38), stress (d = -1.08), ability to handle stress (d = 0.74), and anxiety (d = − 0.86). These results provide preliminary evidence that it may be possible to ‘train’ flow in line with recent perspectives on a core three-dimensional flow experience (and antecedents). The study has developed a research foundation for flow intervention “curriculum” and quality standards, and for measuring results. It offers a foundation for the implementation of a larger-scale program

Attenuation of post-exercise energy intake following 12 weeks of sprint interval training in men and women with overweight

An acute bout of sprint interval training (SIT) performed with psychological need-support incorporating autonomy, competence, and relatedness has been shown to attenuate energy intake at the post-exercise meal, but the long-term effects are not known. The aim of this trial was to investigate the effects of 12 weeks of SIT combined with need-support on post-exercise food consumption. Thirty-six physically inactive participants with overweight and obesity (BMI: 29.6 ± 3.8 kg·m−2; V˙O2peak 20.8 ± 4.1 mL·kg−1·min−1) completed three sessions per week of SIT (alternating cycling for 15 s at 170% V˙O2peak and 60 s at 32% V˙O2peak) with need-support or traditional moderate-intensity continuous training (MICT) without need-support (continuous cycling at 60% V˙O2peak). Assessments of appetite, appetite-related hormones, and ad libitum energy intake in response to acute exercise were conducted pre- and post-intervention. Fasting appetite and blood concentrations of active ghrelin, leptin, and insulin did not significantly differ between groups or following the training. Post-exercise energy intake from snacks decreased significantly from pre- (807 ± 550 kJ) to post- SIT (422 ± 468 kJ; p < 0.05) but remained unaltered following MICT. SIT with psychological need-support appears well-tolerated in a physically inactive population with overweight and offers an alternative to traditional exercise prescription where dietary intake is of concern