Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans.

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Abstract Text:

L K Micklesfield,J Hugo,C Johnson,T D Noakes,E V Lambert,L K Micklesfield,J Hugo,C Johnson,T D Noakes,E V Lambert,

OBJECTIVE: To investigate factors associated with menstrual dysfunction, self-reported bone stress injuries and energy balance in women runners. METHODS: 613 runners were randomly sampled during the registration period for an endurance event. Demographic information, including self-reported height and weight, training and injury history and menstrual history, was collected by questionnaire. RESULTS: Ultra-marathon (ULTRA) participants (n = 276) were significantly older (mean (SD) 39 (8.2) vs 34 (10.5) years; p<0.001), lighter (58.2 (6.6) vs 59.6 (8.3) kg; p<0.05) and reported a higher training volume (p<0.001) than half-marathon (HALF) participants (n = 337). Significantly more ULTRA subjects than HALF subjects reported a previous bone stress injury (21% vs 14%; p<0.05). There was no difference between the groups for menstrual status, but age at menarche was later (p<0.01) in the ULTRA group. Data were combined according to the absence (REG; n = 368/602 (61%)) or presence (IRREG; n = 234/602 (39%)) of a history of menstrual irregularity. Subject morphology was similar between groups, but the IRREG group had a higher self-reported measure on the self-loathing subscale (SLSS; p<0.01). The whole group was then classified according to current menstrual status, with 165 women being classified as currently irregular. (OLIGO/AMEN; 11.6%) and 445 women as currently regular (EUMEN; 88.4%). There were no morphological differences between the groups, however the OLIGO/AMEN group had a later age of menarche (p<0.01) than the EUMEN group. Further, women who reported a previous bone stress injury had higher SLSS scores than those who did not (2.91 (0.98) vs 2.68 (0.84); p<0.05). CONCLUSIONS: There may be two independent mechanisms associated with energy balance, which are related to bone stress injuries, but may not necessarily be related to menstrual dysfunction.

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Publishing Authors By Initials

LK Micklesfield,J Hugo,C Johnson,TD Noakes,EV Lambert,LK Micklesfield,J Hugo,C Johnson,TD Noakes,EV Lambert,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: British journal of sports medicine

VOLUME: 41

Page Numbers: 679-83

Journal Abbreviation:

ISSN: 1473-0480

DAY: 11

MONTH: 05

YEAR: 2007

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 432520

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans.

AFFILIATION: UCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, UCT School of Health Sciences, University of Cape Town, South Africa. lisam@sports.uct.ac.za

Country: England

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Br J Sports Med

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans Related Publications

• Active Galpha(q) subunits and M3 acetylcholine receptors promote distinct modes of association of RGS2 with the plasma membrane.
• Androgen metabolites in bovine follicular fluid.
• Anxiety, depression and coping strategies in post-hysterectomy Chinese women prior to discharge.
• Asymmetric ERM activation at the Schwann cell process tip is required in axon-associated motility.
• Changes in heart rate recovery in response to acute changes in training load.
• Critical roles for non-pRb targets of human papillomavirus type 16 E7 in cervical carcinogenesis.
• Domains in the XPA protein important in its role as a processivity factor.
• Factors associated with menstrual dysfunction and self-reported bone stress injuries in female runners in the ultra- and half-marathons of the Two Oceans.
• Gain is not always good.
• HPV16 E6 confers p53-dependent and p53-independent phenotypes in the epidermis of mice deficient for E6AP.
• Human papillomavirus 16 E5 oncogene contributes to two stages of skin carcinogenesis.
• Identification of biomarkers that distinguish human papillomavirus (HPV)-positive versus HPV-negative head and neck cancers in a mouse model.
• In vitro pharmacological characterisation of a novel cyclic nociceptin/orphanin FQ analogue c[Cys(7,10)]N/OFQ(1-13)NH (2).
• Induction of promyelocytic leukemia (PML) oncogenic domains (PODs) by papillomavirus.
• Infectious disease among enslaved African Americans at Eaton's Estate, Warren County, North Carolina, ca. 1830-1850.
• Metabolic consequences of exercise-induced muscle damage.
• Molecular evolution of hemojuvelin and the repulsive guidance molecule family.
• Multiple sites of exposure in an outbreak of ornithosis in workers at a poultry abattoir and farm.
• Neurosteroid modulation of synaptic and extrasynaptic GABA(A) receptors.
• Prevalence and clinical phenotype of the p.Val226Met glucokinase gene mutation in French Canadians in Quebec, Canada.
• Rapid activation of inwardly rectifying potassium channels by immobile G-protein-coupled receptors.
• Some G protein heterotrimers physically dissociate in living cells.
• Sympathetic activity in major depressive disorder: identifying those at increased cardiac risk?
• The Effect Of Fat-adaptation Followed By Carbohydrate-loading On Ultra-endurance Cycling Performance: 803: June 1 8:15 AM - 8:30 AM.
• The effect of bone marrow transplants on DNA profiles; a case example.
• The neuronal noradrenaline transporter, anxiety and cardiovascular disease.
• Vitamin D deficiency.
• Workshop of experts: definition, recognition, assessment, and alleviation of animal distress in the laboratory.
• [In Process Citation]
• alphaII-Spectrin interacts with five groups of functionally important proteins in the nucleus.