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Effect of heavy increase in training stress on the plasma leptin concentration in highly trained male rowers
Jarek Mäestu1, Jaak Jürimäe, Toivo Jürimäe
1Chair of Sport Pedagogy, Faculty of Exercise and Sport Sciences, University of Tartu, Tartu, Estonia.
Aim:
To characterize the effects of a heavy increase in training stress followed by a reduced stress on fasting plasma leptin levels in highly trained male rowers.
Methods:
12 rowers underwent a 3-week period of maximally increased training stress followed by a 2-week tapering period.
Results:
A mean 22% increase in training stress caused a significant decrease (by 8%) in the leptin concentrations. A further increase in training stress by 25% significantly reduced leptin further by 35%. A 1st tapering week, during which the training stress was rapidly reduced by approximately 50%, significantly increased the plasma leptin concentrations by 29%. Plasma leptin was significantly increased further (by 4%) during the 2nd tapering week.
Conclusion:
Leptin is sensitive to pronounced changes in training stress in highly trained male rowers.
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