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Relationships between leptin levels and carbohydrate intake during rowing training
被引:0
|作者:
Desgorces, F. D.
[1
]
Chennaoui, M.
[1
]
Drogou, C.
[1
]
Guezennec, C. Y.
[1
]
Gomez-Merino, D.
[1
]
机构:
[1] Dept Physiol, F-91223 Bretigny Sur Orge, France
来源:
JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
|
2008年
/
48卷
/
01期
关键词:
nutrition;
rowing;
hormones;
leptin;
D O I:
暂无
中图分类号:
G8 [体育];
学科分类号:
04 ;
0403 ;
摘要:
Aim. This study was designed to determine the relationship between diet and leptin levels during rowing training. Methods. Dietary intakes using 3-day food records, training volume and leptin responses to a 90-min exercise (measurement before, at the end and after 2 and 24 h of recovery) were assessed at the beginning and at the end of an 8-month training season for heavyweight rowers. Results. During the training, we observed increases in energy intake and in training volume (12.1 +/- 1.8 and 14 +/- 1.4 MJ/day, and 3.8 +/- 1.1 and 6.5 +/- 1.8 sessions/week, respectively at the beginning and at the end of the season). Carbohydrate (CHO) and protein intakes were increased (P<0.001 and P<0.05, respectively), whereas those of lipid were unchanged (P=0.08). Leptin levels at rest were unchanged, while delayed decreases occurred (at 2 h postexercise) in response to the 90-min exercise (P<0.01). At the end of the season, postexercise and 24 h postexercise leptin levels were positively correlated to CHO intake (r=0.62 and r=0.69, respectively; P<0.05). Conclusion. There is an increase in CHO intake over a training season for rowers. Our results suggested that repeated hypoleptinemia in response to acute exercise triggered the particular choice of CHO in order to insure the energy homeostasis.
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页码:83 / 89
页数:7
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