TY - JOUR
T1 - Metabolic, endocrine, and reproductive changes of a woman channel swimmer
AU - Frisch, Rose E.
AU - Hall, George M.
AU - Aoki, Thomas T.
AU - Birnholz, Jason
AU - Jacob, Robert
AU - Landsberg, Lewis
AU - Munro, Hamish
AU - Parker-Jones, Kirtly
AU - Tulchinsky, Dan
AU - Young, James
PY - 1984/12
Y1 - 1984/12
N2 - We report the coordinated metabolic, hormonal, and reproductive data of a female channel swimmer during the pre-swim training period, immediately post-swim, and in the post-swim untrained state. Urine and blood samples collected at these times were assayed for diurnal urinary catecholamines, urinary C-peptide and 3-methylhistidine, total blood ketone bodies, glycerol, the reproductive hormones, adrenal androgens, and thyroid hormones. Subcutaneous fat was measured by ultrasonography. All of the metabolic and hormonal data post-swim except cortisol reflected the severe physiological stress. Urinary catecholamines returned to near-normal levels by 12 hours post-swim. The metabolic changes were associated with reproductive changes, including a shortened luteal phase, absence of ovulation, and increased LH secretion relative to FSH. The swimmer maintained high levels of body fat; she did not become amenorrheic. Metabolic and reproductive hormone levels returned to normal by 2 months post-swim.
AB - We report the coordinated metabolic, hormonal, and reproductive data of a female channel swimmer during the pre-swim training period, immediately post-swim, and in the post-swim untrained state. Urine and blood samples collected at these times were assayed for diurnal urinary catecholamines, urinary C-peptide and 3-methylhistidine, total blood ketone bodies, glycerol, the reproductive hormones, adrenal androgens, and thyroid hormones. Subcutaneous fat was measured by ultrasonography. All of the metabolic and hormonal data post-swim except cortisol reflected the severe physiological stress. Urinary catecholamines returned to near-normal levels by 12 hours post-swim. The metabolic changes were associated with reproductive changes, including a shortened luteal phase, absence of ovulation, and increased LH secretion relative to FSH. The swimmer maintained high levels of body fat; she did not become amenorrheic. Metabolic and reproductive hormone levels returned to normal by 2 months post-swim.
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U2 - 10.1016/0026-0495(84)90095-7
DO - 10.1016/0026-0495(84)90095-7
M3 - Article
C2 - 6503709
AN - SCOPUS:0021749949
SN - 0026-0495
VL - 33
SP - 1106
EP - 1111
JO - Metabolism
JF - Metabolism
IS - 12
ER -