Risk of Low Energy Availability in National and International Level Paralympic Athletes: An Exploratory Investigation

Nutrients. 2021 Mar 18;13(3):979. doi: 10.3390/nu13030979.

Abstract

(1) Background: The purpose of this study was to examine the symptoms of low energy availability (LEA) and risk of relative energy deficiency in sport (RED-S) symptoms in para-athletes using a multi-parameter approach. (2) Methods: National level para-athletes (n = 9 males, n = 9 females) completed 7-day food and activity logs to quantify energy availability (EA), the LEA in Females Questionnaire (LEAF-Q), dual energy X-ray absorptiometry (DXA) scans to assess bone mineral density (BMD), and hormonal blood spot testing. (3) Results: Based on EA calculations, no athlete was at risk for LEA (females < 30 kcal·kg-1 FFM·day-1; and males < 25 kcal·kg-1 FFM·day-1; thresholds for able-bodied (AB) subjects). Overall, 78% of females were "at risk" for LEA using the LEAF-Q, and 67% reported birth control use, with three of these participants reporting menstrual dysfunction. BMD was clinically low in the hip (<-2 z-score) for 56% of female and 25% of male athletes (4) Conclusions: Based on calculated EA, the risk for RED-S appears to be low, but hormonal outcomes suggest that RED-S risk is high in this para-athlete population. This considerable discrepancy in various EA and RED-S assessment tools suggests the need for further investigation to determine the true prevalence of RED-S in para-athlete populations.

Keywords: Paralympic; RED-S; bone health; energy availability; reproductive hormones; spinal cord injury.

MeSH terms

  • Absorptiometry, Photon
  • Adult
  • Anthropometry
  • Bone Density
  • Diet / adverse effects*
  • Diet / statistics & numerical data
  • Diet Records
  • Energy Intake / physiology*
  • Energy Metabolism / physiology*
  • Exercise
  • Female
  • Hormones / blood
  • Humans
  • Male
  • Para-Athletes
  • Relative Energy Deficiency in Sport / etiology*
  • Risk Factors
  • Sports Nutritional Physiological Phenomena
  • Sports for Persons with Disabilities / physiology*
  • Surveys and Questionnaires

Substances

  • Hormones