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Impact of Menstrual...
Impact of Menstrual Function on Hormonal Response to Repeated Bouts of Intense Exercise
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- Melin, Anna K., Assistant Professor, 1965- (författare)
- Linnaeus University,Linnéuniversitetet,Institutionen för idrottsvetenskap (ID),Univ Copenhagen, Denmark,University of Copenhagen
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- Ritz, Christian (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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- Faber, Jens (författare)
- Univ Copenhagen, Denmark;Herlev Hosp, Denmark,Herlev Hospital,University of Copenhagen
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- Skouby, Sven (författare)
- Univ Copenhagen, Denmark;Herlev Hosp, Denmark,University of Copenhagen,Herlev Hospital
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- Pingel, Jessica (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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- Sundgot-Borgen, Jorunn (författare)
- Norwegian Sch Sport Sci, Norway,Norwegian School of Sport Sciences
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- Sjödin, Anders (författare)
- Univ Copenhagen, Denmark,University of Copenhagen
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- Tornberg, Åsa B. (författare)
- Lund University,Lunds universitet,Institutionen för hälsovetenskaper,Medicinska fakulteten,Department of Health Sciences,Faculty of Medicine,Lund University, Sweden
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(creator_code:org_t)
- 2019-07-31
- 2019
- Engelska.
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Ingår i: Frontiers in Physiology. - : Frontiers Media S.A.. - 1664-042X. ; 10, s. 1-8
- Relaterad länk:
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https://doi.org/10.3...
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https://www.frontier...
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Background: Strenous exercise stimulates the hypothalamic-pituitary (HP) axis in order to ensure homeostasis and promote anabolism. Furthermore, exercise stimulates a transient increase in the neurotrophin brain-derived neurotrophic factor (BDNF) suggested to mediate the anxiolytic effects of exercise. Athletes with secondary functional hypothalamic amenorrhea (FHA) have been reported to have lower BDNF, and a blunted HP axis response to exercise as athletes with overtraining syndrome. Aim: The aim of the study was to investigate the hormonal and BDNF responses to a two-bout maximal exercise protocol with four hours of recovery in between in FHA and eumenorrheic (EUM) athletes. Methods: Eumenorrheic (n = 16) and FHA (n = 14) endurance athletes were recruited from national teams and competitive clubs. Protocols included gynecological examination; body composition (DXA); 7-day assessment of energy availability; blood sampling pre and post the two exercises tests. Results: There were no differences between groups in hormonal responses to the first exercise bout. After the second exercise bout IGFBP-3 increased more in FHA compared with EUM athletes (2.1 +/- 0.5 vs. 0.6 +/- 0.6 mu g/L, p = 0.048). There were non-significant trends toward higher increase in IGF-1 (39.3 +/- 4.3 vs. 28.0 +/- 4.6 mu g/L, p = 0.074), BDNF (96.5 +/- 22.9 vs. 34.4 +/- 23.5 mu g/L, p = 0.058), GH to cortisol ratio (0.329 +/- 0.010 vs. 0.058 +/- 0.010, p = 0.082), and decrease in IGF-1 to IGFBP-3 ratio (-2.04 +/- 1.2 vs. 0.92 +/- 1.22, p = 0.081) in athletes with FHA compared with EUM athletes. Furthermore, there was a non-significant trend toward a higher increase in prolactin to cortisol ratio in EUM athletes compared with athletes with FHA (0.60 +/- 0.15 vs. 0.23 +/- 0.15, p = 0.071). No differences in the hormonal or BDNF responses between the two exercise bouts as a result of menstrual function were found. Conclusion: No major differences in the hormonal or BDNF responses between the two exercise bouts as a result of menstrual function could be detected.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- amenorrhea
- energy availability
- overtraining syndrome
- female athlete
- brain derived neuronal factor
- Sport Science
- Idrottsvetenskap
- Amenorrhea
- Brain derived neuronal factor
- Energy availability
- Female athlete
- Overtraining syndrome
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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