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Prevalence of Surrogate Markers of Relative Energy Deficiency in Male Norwegian Olympic-Level Athletes
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- Stenqvist, Thomas Birkedal (author)
- University of Agder, Norway
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- Melin, Anna K., Docent, 1965- (author)
- Linnéuniversitetet,Institutionen för idrottsvetenskap (ID),HIP
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- Garthe, Ina (author)
- Norwegian Olympic and Paralympic Committee and Confederation of Sports, Norway
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- (creator_code:org_t)
- Human Kinetics, 2021
- 2021
- English.
- In: International Journal of Sport Nutrition & Exercise Metabolism. - : Human Kinetics. - 1526-484X .- 1543-2742. ; 31:6, s. 497-506
- Journal article (peer-reviewed)
Abstract
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- The syndrome of Relative Energy Deficiency in Sport (RED-S) includes wide-ranging effects on physiological and psychological functioning, performance, and general health. However, RED-S is understudied among male athletes at the highest performance levels. This cross-sectional study aimed to investigate surrogate RED-S markers prevalence in Norwegian male Olympic-level athletes. Athletes (n = 44) aged 24.7 +/- 3.8 years, body mass 81.3 +/- 15.9 kg, body fat 13.7% +/- 5.8%, and training volume 76.1 +/- 22.9 hr/month were included. Assessed parameters included resting metabolic rate (RMR), body composition, and bone mineral density by dual-energy X-ray absorptiometry and venous blood variables (testosterone, free triiodothyronine, cortisol, and lipids). Seven athletes (16%) grouped by the presence of low RMR (RMRratio < 0.90) (0.81 +/- 0.07 vs. 1.04 +/- 0.09, p <.001, effect size 2.6), also showed lower testosterone (12.9 +/- 5.3 vs. 19.0 +/- 5.3 nmol/L, p =.020) than in normal RMR group. In low RMRratio individuals, prevalence of other RED-S markers (-subclinical-low testosterone, low free triiodothyronine, high cortisol, and elevated low-density lipoprotein) was (N/number of markers): 2/0, 2/1, 2/2, 1/3. Low bone mineral density (z-score < -1) was found in 16% of the athletes, all with normal RMR. Subclinical low testosterone and free triiodothyronine levels were found in nine (25%) and two (5%) athletes, respectively. Subclinical high cortisol was found in 23% of athletes while 34% had elevated low-density lipoprotein cholesterol levels. Seven of 12 athletes with two or more RED-S markers had normal RMR. In conclusion, this study found that multiple RED-S markers also exist in male Olympic-level athletes. This highlights the importance of regular screening of male elite athletes, to ensure early detection and treatment of RED-S.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Keyword
- Idrottsvetenskap
- Sport Science
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- art (subject category)
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