Effect of 8 weeks regular resistance training on attenuation of sdLDL changes after single session of heavy resistance exercise

Introduction: Although heavy exercise can independently increase free radical production that may enhance the susceptibility of LDL to oxidation and create more atherogenic LDL particles such as sdLDL, regular training may attenuate these atherogenic conditions. The aim of present study was to investigate the effect of 8 weeks regular resistance training on attenuation of sdLDL changes after single session of heavy resistance exercise. Material & Methods: Eleven healthy young men (aged: 26.6 ± 1.5 years; ± SD) volunteered to participate in this study. One reparation maximum (1-RM) was measured and the subjects were performed a heavy resistance exercise trial consisted of eight exercises (chest press, triceps extension, latissimus pull down, shoulder press, arm curls, leg extension, leg curls, and curl-up) of 8 repetitions with 3 sets at 80% of 1RM. Thereafter, the subjects were performed the same 8 stations resistance training in 3 sets with 6-12 maximal repetitions. This training was performed 3 days a week with 65-80% of 1-RM, for 8 weeks. After the 8 weeks intervention, the heavy resistance exercise trial was performed a gain. Blood samples were taken at baseline (1st step), immediately after the first heavy resistance exercise trial (2nd step), 48h after 8 weeks intervention (3rd step) and immediately after the second heavy resistance exercise trial (4th step). Results: The results showed that sdLDL level was increased after the first heavy resistance exercise trial (P<0.05). After 8 weeks exercise training, sdLDL was decreased compared to 2nd step of blood sampling (P<0.05) and no significant change was observed in sdLDL in this step compare to the baseline. The results indicated that sdLDL level had not significant change after the second heavy resistance exercise trial compare to the 2nd step of blood sampling. Conclusions: The results suggest regular resistance training with specific intensity and duration utilized in this study, attenuate sdLDL changes after single session of heavy resistance exercise.