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Titolo:
Differential effects of maximal- and moderate-intensity runs on plasma leptin in healthy trained subjects
Autore:
Olive, JL; Miller, GD;
Indirizzi:
Wake Forest Univ, Dept Hlth & Exercise Sci, Winston Salem, NC 27109 USA Wake Forest Univ Winston Salem NC USA 27109 , Winston Salem, NC 27109 USA
Titolo Testata:
NUTRITION
fascicolo: 5, volume: 17, anno: 2001,
pagine: 365 - 369
SICI:
0899-9007(200105)17:5<365:DEOMAM>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
SERUM LEPTIN; PROLONGED EXERCISE; OBESE GENE; BODY-FAT; HUMANS; WOMEN; INSULIN; WEIGHT; ADIPOSITY; GENDER;
Keywords:
leptin; insulin; exercise;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Miller, GD Wake Forest Univ, Dept Hlth & Exercise Sci, Box 7868 Reynolda Stn, WinstonSalem, NC 27109 USA Wake Forest Univ Box 7868 Reynolda Stn Winston Salem NC USA 27109
Citazione:
J.L. Olive e G.D. Miller, "Differential effects of maximal- and moderate-intensity runs on plasma leptin in healthy trained subjects", NUTRITION, 17(5), 2001, pp. 365-369

Abstract

This study investigated the effect of different exercise bouts on plasma leptin response. Trained men (n = 9) performed a short duration, maximal intensity (MAX) bout and a 60-min endurance run at similar to 70% of maximal oxygen consumption (END). Blood was collected before, immediately after, 24 h after (24 h Post), and 48 h after exercise (48 h Post) for measurement ofplasma leptin, insulin,;and glucose. VO(2)max and percent body fat were 57.8 +/- 2.1 mL.kg(-1).min(-1) and 10.8 +/- 1.5% (mean +/- SEM), respectively. Energy expenditure was 197.5 +/- 11.8 and 882.7 +/- 14.4 kcal for MAX andEND, respectively. Plasma leptin levels did not differ between time pointsfor the MAX run. Leptin was significantly lower 48 h Post (2.2 +/- 0.3 ng/mL) versus before, immediately after, and 24 h Post exercise(3.1 +/- 0.3, 3.0 +/- 0.3, and 2.5 +/- 0.4 ng/mL, respectively) for END. Leptin tended to be lower at 24 h Post than before or immediately after exercise (P = 0.10). Plasma insulin was lower 24 h Post- versus preexercise for the END, but was not correlated to changes in leptin levels. Plasma glucose levels did notchange significantly during the endurance test. We found a delayed decrease in leptin at 48 h after an extended exercise session (900 kcal). Furthermore, this effect did not appear to be related to changes in insulin or glucose levels. Findings from this study address the effects of exercise on leptin, aiding in the evaluation of the impact of exercise and energy expenditure on plasma leptin concentrations in the prevention and treatment of obesity.

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Documento generato il 23/01/20 alle ore 03:56:30