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Infographic. Energy availability: concept, control and consequences in relative energy deficiency in sport (RED-S)
  1. Nicola Keay1,
  2. Gavin Francis2
  1. 1 Department of Sport and Exercise Sciences, Durham University, Durham, UK
  2. 2 Science4Performance, London, UK
  1. Correspondence to Dr Nicola Keay, Durham University, Durham DH1 3LY, UK; nickykeayfrancis{at}

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Relative energy deficiency in sport (RED-S) is an issue of increasing concern in sports and exercise medicine. RED-S impacts exercisers of all levels and ages, particularly where low body weight confers a performance or aesthetic advantage. Key to mitigating adverse health and performance consequences of RED-S is supporting athletes and dancers to change behaviours. These infographics aim to assist clinicians in communicating the concepts to exercisers and in implementing effective management of athletes in their care.1

Figure 1 illustrates the concept of energy availability (EA) in RED-S. Preferentially energy derived …

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  • Contributors NK provided medical input, and GF translated it to visual representation.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.