Abstract
This study aimed to analyse whether regular swimming exercise affects skeletal muscle membrane lipid composition of fi sh. Common carps (Cyprinus carpio L., n=2x12 control vs. trained) were exercised 30 minutes/day in an artifi cial water fl ow at 0.6 m/s standard velocity. After 35 days fast-twitch type muscle samples were taken and phospholipid Fatty Acid (FA) composition was determined with column chromatography and subsequent gas chromatography. Training signifi cantly decreased the proportion of myristic (C14:0), margaric (C17:0) and arachidonic (C20:4 n6) acids and the total n6 FA proportion, while increased the proportion of behenic acid (C22:0). The fi llet malondialdehyde content (indicative of the in vivo lipid peroxidation) decreased signifi cantly in the trained group. These novel results on carp are mostly consonant with those gained so far only in homeothermic vertebrates.
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