Vegan diets are increasingly of interest to athletes, but require a well-planned approach in order to mitigate the risk of potential adverse effects on nutrient intakes, and consequently performance. This case study reports the process of an elite male Gaelic football player (age 25 years; height, 1.88 m; body mass, 87.8 kg; lean body mass, 73.26 kg; body fat, 11.3%) transitioning from an omnivorous diet to a vegan diet at the beginning of a competitive season. The report encompasses key considerations in the planning and provision of nutrition support in this context, in addition to iterations needed based on challenges presented by the athlete. Analysis of nutrient intake (Nutritics Dietary Analysis Software), body composition (dual X-ray absorptiometry; Lunar iDXA, GE Healthcare), and running performance during match-play (global positioning system-based tracking; STATSports Apex) each indicated that with adequate knowledge and education, and appropriate planning, commitment and iterative feedback, the athlete was able to meet nutrition targets on a vegan diet without compromising key performance indicators compared to the omnivorous diet of the previous season. We anticipate that this case study will assist practitioners to recognize the key considerations to address when working with athletes transitioning to a vegan diet.

中文翻译：

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案例研究：一名优秀的盖尔男子足球运动员过渡到素食主义者的饮食

素食饮食越来越受到运动员的关注，但是需要一种精心计划的方法，以减轻可能对营养摄入量和运动产生潜在不利影响的风险。该案例研究报告了一名精英男性盖尔足球运动员（25岁；身高1.88 m；体重87.8 kg；瘦体重73.26 kg；体脂11.3％）从杂食过渡到素食的过程。在竞争季节开始时节食。该报告除了根据运动员提出的挑战需要进行的迭代外，还包括在此背景下规划和提供营养支持的主要考虑因素。营养摄入量分析（Nutritics膳食分析软件），身体成分（双X射线吸收法； Lunar iDXA，GE Healthcare），比赛期间的跑步表现（基于全球定位系统的跟踪； STATSports Apex）均表明，只要有足够的知识和教育，加上适当的计划，承诺和反复反馈，运动员就可以在不影响素食的前提下达到营养目标与上一季杂食性饮食相比的关键绩效指标。我们预计，此案例研究将帮助从业者认识与过渡到纯素食的运动员一起工作时要解决的关键因素。与上一季的杂食性饮食相比，该运动员能够在纯素食的基础上达到营养目标，而又不影响关键性能指标。我们预计，此案例研究将帮助从业者认识与过渡到纯素食的运动员一起工作时要解决的关键因素。与上一季的杂食性饮食相比，该运动员能够在纯素食的基础上达到营养目标，而又不影响关键性能指标。我们预计，此案例研究将帮助从业者认识与过渡到纯素食的运动员一起工作时要解决的关键因素。