Abstract:
Introduction: Small dense low-density lipoprotein-cholesterol (sdLDL) is an emerging biomarker associated with cardiovascular disease and several comorbidities. The effects of aerobic versus resistance exercise on sdLDL levels are not well known; thus the aim of present study was to investigate effect of 8 weeks aerobic vs. resistance exercise on sdLDL concentration in young men. Material & Methods: Twenty two healthy young men volunteered to participate in this study. The subjects were divided into endurance (n=11) or resistance (n=11) exercise group randomly. The subjects in the endurance exercise group were performed 8 weeks aerobic exercise with 60 to 75% of their hear rate reserve 3 days a week, while the subjects in resistance exercise group were performed resistance training consisted of eight exercises (chest press, triceps extension, latissimus pull down, shoulder press, arm curls, leg extension, leg curls, and curl-up) of 6-12 maximal repetitions with 3 sets at 65-80% of 1RM for 8 weeks. Blood samples were taken at baseline and 48h after the last session of exercise. Results: The results showed that sdLDL, TC, TG and LDL were decreased and HDL was increased only after endurance training. Data also revealed that there were significant differences in changes of sdLDL, TC, TG, LDL and HDL concentration between endurance and resistance exercise (p Conclusions: The results suggest endurance exercise is better than resistance exercise for reduction of sdLDL, TC, TG, LDL and HDL concentration in the young men.
Machine summary:
Comparison the effect of 8 weeks endurance versus resistance exercise on sdLDL concentration in military men Nooshin Khajeian1* and Hamid Reza Nayeri Khoob1 Received: 11 November 2019 / Accepted: 5 January 2020 (1)*MS in Exercise Physiology, Department of Exercise physiology, Marvdasht branch, Islamic Azad University, Marvdasht, Iran.
Data also revealed that there were significant differences in changes of sdLDL, TC, LDL and HDL concentration between endurance and resistance exercise.
Conclusions: The results suggest endurance exercise is better than resistance exercise to reduce sdLDL, TC, LDL and increase HDL concentration in the military men.
Despite a number of scientific evidence supporting the benefits of physical exercises for prevention and management of cardiovascular diseases (15-17), recently Nayeri khoob and Moghadasi (2017) indicated hat sdLDL level was increased after a bout of heavy resistance exercise; however it decreased after 8 weeks regular resistance training (18).
One of the rare studies exclusively examining females evaluated the effects of 16 weeks of endurance exercise and a significant increase in HDL and decrease in the concentration of triglycerides were reported (27).
(2015) studied the effect of endurance and resistance exercise training on PON1 and lipid profile levels in obese men.
Similarly, in a study with healthy males, high-resistance training and moderate-intensity resistance physical exercise performed over 6 weeks were equally effective with regard to reductions of LDL, total cholesterol, and the TC/HDL ratio (31).
The second aim of this study was to investigate the effect of endurance versus resistance exercise on sdLDL concentration in military men.