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O'Connor H Olds T Maughan RJ;International Association of Athletics Federations 《Journal of sports sciences》2007,25(Z1):S49-S60
Evidence of the importance of physique in the athletics disciplines is supported by the persistence of certain characteristics over long periods, despite marked secular changes in the source population. These characteristics may also result in physiological benefits such as effective thermoregulation or a greater power-to-weight ratio. Coaches and athletes are often convinced of weight or fat loss benefits based on personal or anecdotal experience, intuition, and "trained eye" observation of successful competitors. This may entice athletes into adopting unbalanced, erratic or highly restrictive eating patterns that increase the risk for nutrient deficiencies, and disordered eating. Despite heavy training loads and often extreme diets, some athletes fall short of their physique goals as ultimately phenotype is under genetic control. Professionals assisting athletes with physique management need to be highly skilled in anthropometry and require a thorough understanding of sports-specific nutrition requirements. Careful assessment of the risks and benefits of various approaches to weight and fat loss is required before they are recommended to athletes. 相似文献
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Johnston R 《Journal of sports sciences》2008,26(6):563-568
In a recent paper in this journal, Boyko and colleagues (2007) identified differences in attendance and referee bias as factors influencing home advantage at soccer matches in the English Premiership. A replication of their study using more recent data found no evidence to sustain either of their claims. 相似文献
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Ron Maughan 《Journal of sports sciences》2008,26(10):1119-1120
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Ron Johnston 《Perspectives: Policy and Practice in Higher Education》2013,17(4):115-118
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Sharon ABBEY Bev BAILEY Jane Dubrick Kathleen Moore Joyce Nyhof-YOUNG Erminia Pedretti Ron Saranchuk 《International journal of qualitative studies in education》2013,26(1):101-102
Underlined by the belief that teachers' critical awareness of their actions is a vital issue in education, this study examines the insights that evolved from a long-term collaboration among seven doctoral students. To prepare for our comprehensive examinations, we collaborated as a study group for one and one-half years. Adopting the dual roles of listener-researcher and narrator-participant, we engaged in dialogue and narrative to convey to each other the meaning of our collaborative experiences. From grounded theory analysis, four elements of collaboration emerged: logistics, social dynamics, empowerment, and change. In order to convey the meaning of our experiences, we create a multiplicity of meanings based on our diverse and lived personal narratives. Finally, our collaborative process challenges academic administrations to examine how well their current policies encourage personal autonomy and cooperative learning approaches for students involved in preparing for their comprehensive examinations. 相似文献