Beyond hypoestrogenism in amenorrheic athletes: Energy deficiency as a contributing factor for bone loss
Beyond hypoestrogenism in amenorrheic athletes: Energy deficiency as a contributing factor for bone loss
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除了闭经运动员雌激素低下之外:能量缺乏是骨质流失的一个促成因素
DOI:
--
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发表时间:
2005
影响因子:
1.8
通讯作者:
N. Williams
中科院分区:
文献类型:
--
作者:
Mary Jane De Souza;N. Williams
The etiology of amenorrhea in exercising women is linked to a mismatch between caloric intake and high levels of exercise energy expenditure that results in a chronic energy deficit. This in turn stimulates compensatory mechanisms such as weight loss, metabolic hormone alterations, or energy conservation that subsequently causes a central suppression of reproductive function and concomitant hypoestrogenism. This suppression of reproductive function is associated with stress fractures, loss of bone mineral density, the failure to achieve peak bone mass, osteopenia, and osteoporosis. It has generally been accepted that the chronic hypoestrogenism is the major cause of bone loss in exercising women. However, the effects of food restriction and energy deficiency on bone mineral density likely represents an estrogen-independent mechanism for bone loss that involves some of the metabolic-related hormones altered with exercise-associated amenorrhea. These hormones (IGF-1 and leptin) play an important role in modulating bone turnover and bone mineral density in these women.
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DOI:
10.1016/s0169-6009(08)80023-2
发表时间:
1993
期刊:
Bone and mineral
影响因子:
--
作者:
Holbrook,TL;Barrett-Connor,E
通讯作者:
Barrett-Connor,E
影响因子:
7.2
作者:
Biller,BM;Coughlin,JF;Saxe,V;Schoenfeld,D;Spratt,DI;Klibanski,A
通讯作者:
Klibanski,A
影响因子:
7.2
作者:
Jonnavithula,S;Warren,MP;Fox,RP;Lazaro,MI
通讯作者:
Lazaro,MI
DOI:
10.1210/jcem.86.11.8024
发表时间:
2001
期刊:
The Journal of clinical endocrinology and metabolism.
影响因子:
--
作者:
Williams,NI;Helmreich,DL;Parfitt,DB;Caston-Balderrama,A;Cameron,JL
通讯作者:
Cameron,JL
DOI:
10.1210/jcem.80.12.8530611
发表时间:
1995-12
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
S. Grinspoon;H. Baum;V. Kim;C. Coggins;A. Klibanski
通讯作者:
S. Grinspoon;H. Baum;V. Kim;C. Coggins;A. Klibanski