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Titolo:
CORTISOL, TESTOSTERONE, AND INSULIN ACTION DURING INTENSE SWIMMING TRAINING IN HUMANS
Autore:
TYNDALL GL; KOBE RW; HOUMARD JA;
Indirizzi:
E CAROLINA UNIV,HUMAN PERFORMANCE LAB,SPORTS MED BLDG GREENVILLE NC 27858 E CAROLINA UNIV,HUMAN PERFORMANCE LAB GREENVILLE NC 27858
Titolo Testata:
European journal of applied physiology and occupational physiology
fascicolo: 1-2, volume: 73, anno: 1996,
pagine: 61 - 65
SICI:
0301-5548(1996)73:1-2<61:CTAIAD>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
REPRODUCTIVE HORMONES; MEN; GLUCOSE; SENSITIVITY; RESISTANCE; RELEASE; RATS;
Keywords:
ATHLETES; GENDER; SEX HORMONE BINDING GLOBULIN; SWIMMING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
G.L. Tyndall et al., "CORTISOL, TESTOSTERONE, AND INSULIN ACTION DURING INTENSE SWIMMING TRAINING IN HUMANS", European journal of applied physiology and occupational physiology, 73(1-2), 1996, pp. 61-65

Abstract

An increase in the amounts of circulating plasma cortisol or a decrease in testosterone can result in whole-body insulin resistance. The purpose of this study was to determine if the increase in cortisol and/or decrease in testosterone concentrations commonly evident with intense endurance training is associated with insulin resistance. Male (it =9) and female (n = 10) swimmers were examined during the off-season, after 9 weeks (9 WKS)of training averaging 5,500 m . day(-1) and afteran additional 9 weeks (18 WKS) of training averaging 8,300 m . day(-1). Resting plasma cortisol concentration was (P less than or equal to 0.05) higher in the women compared to the men at 9 WKS; values were not significantly different between genders at 18 WKS. Plasma testosterone concentration decreased significantly (P less than or equal to 0.05) in the men at 9 and 18 WKS, but did not change in the women. Whole-body insulin action, as determined by insulin and glucose responses during a 120 min, 75-g oral glucose tolerance test, did not change with training in either the men or women. These data indicated that plasma testosterone concentration can decrease in male swimmers during intenseendurance training; this alteration does not affect whole-body insulin action. There would also appear to be a gender-specific response of plasma cortisol to endurance training, which does not influence insulin action.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 12:35:20