Resistance exercise is a popular form of physical activity recommended to improve muscular strength and endurance, fat-free mass and bone mineral density. In our study, we investigated the effects of single bouts of whole body circuit-resistance exercise on a blood lipid profile (concentration of triacylglycerol-TG, total cholesterol -TC, high-density lipoprotein derived cholesterol -HDL-C), glucose level as well as fat oxidation rate (FOR) and a resting metabolic rate -RMR. Eight normolipidemic recreationally trained men (22,4 ±2,1 year old, body mass 80,6±8,7 kg, body fat 13,9 ± 3,4%, VO2max52,9 ±3,3 ml/kg/min) volunteered to participate in the study. Mean RMR amounted to 6,65 ± 0,48 kJ/min. at rest and did not markedly change at 24 h after exercise cessation. The baseline FOR reached a mean value 0,14 ± 0,02 g/min. During post-exercise recovery FOR remained unchanged, however serum TG level decreased 24 h after finishing a workout, compared with the resting value. Those changes were accompanied by no significant change in serum glucose concentration and cholesterol status. Conclusion: a single session of circuit resistance exercise is not sufficient to increase lipid oxidation during post-exercise recovery, however it results in a favourable decrease in serum TG level.

Jerzy Kakuczka Academy of Physical Education Katowice Poland

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