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Within-day energy d...
Within-day energy deficiency and reproductive function in female endurance athletes
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- Fahrenholtz, I. L. (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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- Sjödin, A. (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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- Benardot, D. (författare)
- Georgia State Univ, USA,Georgia State University
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- Tornberg, Å B (författare)
- Lund University,Lunds universitet,Barns och familjers hälsa,Forskargrupper vid Lunds universitet,Child and Family Health,Lund University Research Groups
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- Skouby, S. (författare)
- Univ Copenhagen, Denmark;Herlev Hosp, Denmark,University of Copenhagen
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- Faber, J. (författare)
- Univ Copenhagen, Denmark;Herlev Hosp, Denmark,University of Copenhagen
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- Sundgot-Borgen, J. K. (författare)
- Norwegian Sch Sport Sci, Norway,Norwegian School of Sport Sciences
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- Melin, Anna K., Assistant Professor, 1965- (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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(creator_code:org_t)
- 2018-02-05
- 2018
- Engelska.
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : Wiley-Blackwell. - 0905-7188 .- 1600-0838. ; 28:3, s. 1139-1146
- Relaterad länk:
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https://nih.brage.un...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- We aimed to estimate and compare within-day energy balance (WDEB) in athletes with eumenorrhea and menstrual dysfunction (MD) with similar 24-hour energy availability/energy balance (EA/EB). Furthermore, to investigate whether within-day energy deficiency is associated with resting metabolic rate (RMR), body composition, S-cortisol, estradiol, T-3, and fasting blood glucose. We reanalyzed 7-day dietary intake and energy expenditure data in 25 elite endurance athletes with eumenorrhea (n=10) and MD (n=15) from a group of 45 subjects where those with disordered eating behaviors (n=11), MD not related to low EA (n=5), and low dietary record validity (n=4) had been excluded. Besides gynecological examination and disordered eating evaluation, the protocol included RMR measurement; assessment of body composition by dual-energy X-ray absorptiometry, blood plasma analysis, and calculation of WDEB in 1-hour intervals. Subjects with MD spent more hours in a catabolic state compared to eumenorrheic athletes; WDEB<0kcal: 23.0hour (20.8-23.4) vs 21.1hour (4.7-22.3), P=.048; WDEB<-300kcal: 21.8hour (17.8-22.4) vs 17.6hour (3.9-20.9), P=.043, although similar 24-hour EA: 35.6 (11.6) vs 41.3 (12.7) kcal/kg FFM/d, (P=.269), and EB: -659 (551) vs -313 (596) kcal/d, (P=.160). Hours with WDEB <0kcal and <-300kcal were inversely associated with RMRratio (r=-.487, P=.013, r=-.472, P=.018), and estradiol (r=-.433, P=.034, r=-.516, P=.009), and positively associated with cortisol (r=.442, P=.027, r=.463, P=.019). In conclusion, although similar 24-hour EA/EB, the reanalysis revealed that MD athletes spent more time in a catabolic state compared to eumenorrheic athletes. Within-day energy deficiency was associated with clinical markers of metabolic disturbances.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- amenorrhea
- catabolism
- energy availability
- relative energy deficiency
- resting metabolic rate
- within-day energy balance
- Idrottsvetenskap
- Sport Science
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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