عنوان مقاله [English]
The effect of resistance training merely with eccentric contractions which are the result of muscle damage and inflammation on plasma viscosity is not entirely clear. The aim of the present study was to investigate the effect of one session of eccentric resistance exercise on plasma viscosity, lipid profile and plasmalipoprotein of inactive male students.12 male inactive students volunteered to participate in this study who were randomly selected and divided into experimental and control groups. Experimental group performed a controlled return exercise(extension) from elbow flexion movementwhich included an eccentric contraction. Blood samples werecollected 30 min. before, immediately, 2 and 24 hours after the exercise to measure coagulation factors. Although high density lipoprotein, low density lipoprotein, triglycerides and total cholesterol didnot change significantly, plasma viscosity significantly increased in response to the exercise and significantly decreased during recovery (P=0.047).The plasma volume significantly decreased in response to the exercise and significantly increased during recovery (P=0.007). Although inappropriate results (decreased plasma volume and increased plasma viscosity) were observed because of acute eccentric resistance exercise, the alterations were totally reversed after 2-24 hours of recovery and the plasma viscosity returned under the baseline as the plasma volume elevated to the level above the baseline. In other words, there was a supercompensation body response against the acute effect ofthe exercise.
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