Perspectives on the future of burnout in sport

The present editorial provides a series of perspectives on the future of burnout in sport. Specifically, for the first time, seven burnout researchers offer their opinions and suggestions for how, as a field, we can progress our understanding of this important topic. A broad range of ideas are discussed including the relevance of the social context, the value of theory and collaboration, and the use of public health frameworks in future work. It is hoped that these perspectives will help stimulate debate, reinforce and renew priorities, and guide research in this area over the coming years

Are diet–prostate cancer associations mediated by the IGF axis? A cross-sectional analysis of diet, IGF-I and IGFBP-3 in healthy middle-aged men

We examined the association of diet with insulin-like growth factors (IGF) in 344 disease-free men. Raised levels of IGF-I and/or its molar ratio with IGFBP-3 were associated with higher intakes of milk, dairy products, calcium, carbohydrate and polyunsaturated fat; lower levels with high vegetable consumption, particularly tomatoes. These patterns support the possibility that IGFs may mediate some diet-cancer associations

Sediment source fingerprinting: benchmarking recent outputs, remaining challenges and emerging themes

Abstract: Purpose: This review of sediment source fingerprinting assesses the current state-of-the-art, remaining challenges and emerging themes. It combines inputs from international scientists either with track records in the approach or with expertise relevant to progressing the science. Methods: Web of Science and Google Scholar were used to review published papers spanning the period 2013–2019, inclusive, to confirm publication trends in quantities of papers by study area country and the types of tracers used. The most recent (2018–2019, inclusive) papers were also benchmarked using a methodological decision-tree published in 2017. Scope: Areas requiring further research and international consensus on methodological detail are reviewed, and these comprise spatial variability in tracers and corresponding sampling implications for end-members, temporal variability in tracers and sampling implications for end-members and target sediment, tracer conservation and knowledge-based pre-selection, the physico-chemical basis for source discrimination and dissemination of fingerprinting results to stakeholders. Emerging themes are also discussed: novel tracers, concentration-dependence for biomarkers, combining sediment fingerprinting and age-dating, applications to sediment-bound pollutants, incorporation of supportive spatial information to augment discrimination and modelling, aeolian sediment source fingerprinting, integration with process-based models and development of open-access software tools for data processing. Conclusions: The popularity of sediment source fingerprinting continues on an upward trend globally, but with this growth comes issues surrounding lack of standardisation and procedural diversity. Nonetheless, the last 2 years have also evidenced growing uptake of critical requirements for robust applications and this review is intended to signpost investigators, both old and new, towards these benchmarks and remaining research challenges for, and emerging options for different applications of, the fingerprinting approach

The psychology of passion: A meta-analytical review of a decade of research on intrapersonal outcomes

It is just over a decade since Vallerand et al. (J Personal Soc Psychol 85:756–767, 2003) introduced the dualistic model of passion. In this study, we conduct a meta-analytical review of relationships between Vallerand et al’s two passions (viz. harmonious and obsessive), and intrapersonal outcomes, and test the moderating role of age, gender, domain, and culture. A systematic literature search yielded 94 studies, within which 27 criterion variables were reported. These criterion variables derived from four research areas within the intrapersonal sphere: (a) well-/ill-being, (b) motivation factors, (c) cognitive outcomes and, (d) behaviour and performance. From these areas we retrieved 1308 independent effect sizes and analysed them using random-effects models. Results showed harmonious passion positively corresponded with positive intrapersonal outcomes (e.g., positive affect, flow, performance). Obsessive passion, conversely, showed positive associations with positive and negative

Are athletes burning out with passion?

Passion is a strong motivational force towards an activity considered very important, possibly to the extent that the activity forms a part of an individual’s identity. Two forms of passion, harmonious and obsessive, are thought to lead to different cognitive and affective responses. Although being passionate about sport appears to be important from a motivational perspective, it possibly also increases the risk for burnout, which is a negative consequence blamed partly on too much training and inadequate recovery. The question voiced in this study is whether harmonious passion and obsessive passion pose equal risks for burnout. Participants were 94 female and 164 male competitive athletes from 21 sports. The results, analysed using partial correlation and multivariate analyses of variance, showed that athletes with an obsessive passion scored higher on a burnout inventory than did harmoniously passionate athletes. Obsessively passionate athletes also scored higher on perceived stress and negative affect, and lower on positive affect. These findings support the assumption that even though the two forms of passion may be an integral part of elite sports, athletes scoring high on obsessive passion may be at greater risk of developing burnout than more harmoniously passionate athletes. Burning bright and burning out can thus be seen as two potential consequences for athletes driven by passion. Athletes and coaches who are aware of this may be better equipped to avoid the potential negative consequences associated with too much stress and too little recovery