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Titolo:
Effect of intense training on plasma leptin in male and female swimmers
Autore:
Noland, RC; Baker, JT; Boudreau, SR; Kobe, RW; Tanner, CJ; Hickner, RC; McCammon, MR; Houmard, JA;
Indirizzi:
E Carolina Univ, Human Performance Lab, Dept Exercise & Sport Sci, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 ort Sci, Greenville, NC 27858 USA E Carolina Univ, Dept Nutr & Hospital Management, Greenville, NC 27858 USAE Carolina Univ Greenville NC USA 27858 agement, Greenville, NC 27858 USA
Titolo Testata:
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
fascicolo: 2, volume: 33, anno: 2001,
pagine: 227 - 231
SICI:
0195-9131(200102)33:2<227:EOITOP>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
SERUM LEPTIN; PHYSICAL-ACTIVITY; OBESE GENE; SHORT-TERM; HUMANS; EXERCISE; CORTISOL; RUNNERS; WOMEN; TESTOSTERONE;
Keywords:
endurance athletes; energy balance; diet; fat mass; female athletes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Houmard, JA E Carolina Univ, Human Performance Lab, Dept Exercise & Sport Sci, Ward Sports Med Bldg, Greenville, NC 27858 USA E Carolina Univ Ward Sports Med Bldg Greenville NC USA 27858 A
Citazione:
R.C. Noland et al., "Effect of intense training on plasma leptin in male and female swimmers", MED SCI SPT, 33(2), 2001, pp. 227-231

Abstract

Purpose: The purpose of this study was to determine whether fasting plasmaleptin concentration was altered with an increase in training volume in competitive male and female athletes. Methods: Intercollegiate male (N = 9) and female (N = 12) swimmers were examined during the preseason and at two times during the mid-season (mid-season 1 and mid-season 2) when training volume was relatively high (33,000 m.wk(-1)). Body composition (hydrostatic weighing), energy intake and expenditure, and fasting plasma leptin concentration were measured. Results In the women, there was a significant (P < 0.05) decline in fat mass (2 kg) with the increase in training volume, which was not accompanied by a reduction in fasting leptin (12.8 +/- 1.5 vs 11.0 +/- 1.2 vs 11.0 +/- 1.5 ng.mL(-1) for preseason, mid-season 1, and mid-season 2, respectively). In the men, there were no significant changes in body composition. body mass, or fasting leptin (4.4 +/- 0.8 vs 4.3 +/- 0.8 vs 4.6+/- 0.8 ng.mL(-1), respectively). Conclusions: These findings suggest 1) plasma leptin is not sensitive to an increase in training volume and 2) leptin may not be indicative of changes in fat mass with an increase in training volume in female athletes. These data suggest that leptin may not be useful in monitoring relative training stress in athletes.

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Documento generato il 20/01/20 alle ore 22:45:23