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Previous studies have investigated how individuals reach an expert level by counting the number of hours engaged in specific practice types. Here we sought to understand and compare the microstructure (e.g. practice tasks undertaken) of these practice hours experienced by elite and sub-elite British rugby league players. Semi-structured interviews explored the practice experiences of eight international and eight domestic level players. A two-staged thematic analysis was used to interpret the data. The analysis revealed that both player groups experienced a rich and narrow landscape of affordances and were exposed to early diversification of sports experiences during childhood. Differences were identified in domestic level players' experiences of amateur and professional sports, where episodes of negative developmental environments were reported. International players' practice experiences revealed differences in their professional careers, where exposure to scenario-based practice and dynamic learning environments were reported. The findings suggest that insights from ecological dynamics provide a suitable theoretical framework to guide coaches in the design of practice environments that should consider the physical, psychological, emotional and social dimensions of expertise acquisition.

Social, cultural, and historical constraints can influence attitudes towards learning, developing, and performing in sport. A recent conceptualization of these environmental constraints in athlete development pathways is a form of life, which describes the values, beliefs, traditions, customs, and behaviors that contribute to an athlete’s development. Although a form of life can have a powerful influence on athlete development, research exploring this relationship is limited. In this article we explore the form of life in British rugby league football player development contexts to clarify how social, cultural, and historical constraints influence the development of rugby league players in the United Kingdom. Twenty-four coaches were interviewed through individual semi-structured interviews to collect the data. Findings show how forms of life in rugby league player development pathways are established and maintained by the complex interactions between the microsystem, mesosystem, exosystem, and macrosystem that shape and guide the development of players. We recommend that player development pathways in sport underpin practice with a theoretical framework of the learning process to protect athletes from social, cultural, and historical constraints that are not conducive to their development.

Currently, there are numerous definitions and interpretations of the concept of physical literacy within the literature, potentially leading to a lack of consensus as to how to employ it in practice. In this position paper, we argue that ecological dynamics is well-positioned to provide a theoretical framework that will bring clarity, as well as support the operationalisation of physical literacy in practice. We argue that this theoretical conceptualisation provides an excellent framework for understanding physical literacy because of its emphasis on the person-environment relationship. More directly, we propose the establishment of an individual-environment fit across varied movement contexts over a lifespan as a central tenet of the physical literacy concept. We conclude by discussing how sports practitioners, national governing bodies, public health and education sectors could re-design sport, exercise and physical activity environments, in accordance with an ecological dynamics rationale to enhance physical literacy.