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    A life history perspective on athletes with low energy availability

    Shirley, Meghan K, Longman, Daniel P, Elliott-Sale, Kirsty J, Hackney, Anthony C, Sale, Craig ORCID logoORCID: https://orcid.org/0000-0002-5816-4169 and Dolan, Eimear (2022) A life history perspective on athletes with low energy availability. Sports Medicine, 52 (6). pp. 1223-1234. ISSN 0112-1642

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    Abstract

    The energy costs of athletic training can be substantial, and deficits arising from costs unmet by adequate energy intake, leading to a state of low energy availability, may adversely impact athlete health and performance. Life history theory is a branch of evolutionary theory that recognizes that the way the body uses energy—and responds to low energy availability—is an evolved trait. Energy is a finite resource that must be distributed throughout the body to simultaneously fuel all biological processes. When energy availability is low, insufficient energy may be available to equally support all processes. As energy used for one function cannot be used for others, energetic “trade-offs” will arise. Biological processes offering the greatest immediate survival value will be protected, even if this results in energy being diverted away from others, potentially leading to their downregulation. Athletes with low energy availability provide a useful model for anthropologists investigating the biological trade-offs that occur when energy is scarce, while the broader conceptual framework provided by life history theory may be useful to sport and exercise researchers who investigate the influence of low energy availability on athlete health and performance. The goals of this review are: (1) to describe the core tenets of life history theory; (2) consider trade-offs that might occur in athletes with low energy availability in the context of four broad biological areas: reproduction, somatic maintenance, growth, and immunity; and (3) use this evolutionary perspective to consider potential directions for future research.

    Item Type: Article
    Peer-reviewed: Yes
    Date Deposited: 07 Nov 2022 11:27
    Publisher: Springer Verlag
    Additional Information: This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s40279-022-01643-w
    Divisions: Faculties > Science and Engineering
    Research Centres > Musculoskeletal Sciences & Sport Medicine
    Subject terms: Science & Technology, Life Sciences & Biomedicine, Sport Sciences, MUSCLE PROTEIN-SYNTHESIS, TRADE-OFFS, REPRODUCTIVE FUNCTION, PHENOTYPIC PLASTICITY, BONE METABOLISM, IMMUNE FUNCTION, INHIBIT GROWTH, RISK-FACTORS, WEIGHT-LOSS, EVOLUTIONARY, Humans, Energy Metabolism, Energy Intake, Reproduction, Sports, Athletes, Athletes, Energy Intake, Energy Metabolism, Humans, Reproduction, Sports, 0913 Mechanical Engineering, 1106 Human Movement and Sports Sciences, 1302 Curriculum and Pedagogy, Sport Sciences
    URI: https://e-space.mmu.ac.uk/id/eprint/630595
    DOI: https://doi.org/10.1007/s40279-022-01643-w
    ISSN 0112-1642
    e-ISSN 1179-2035

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