ABSTRACT
Heart rate recovery [HRR] after exercise test and resting heart rate are shown to be important predicitive risk factors for cardiovascular and all-cause mortality in individuals with CVD. Therefore the purpose of this study is comparison of the effects of selected aerobic continues and interval exercise training on resting heart rate and heart rate recovery after 1,2 and 3 minutes in POST CABG patients. Twenty four POST CABG patients [22 men, 2 women with mean age: 57.04 +/- 8.42 and mean BMI: 27.17 +/- 2.98 kg/m2] were divided to a selected aerobic continues training, 30-60 min and intensity of 70-85% of HR maximum [n=12] and an aerobic interval training with three interval [9- 15 min], 27-45 min and intensity of 75-90% of HR maximum [n=12]. They perform the exercise protocols three times per week for 8 weeks. Result of pair T test showed, there are significant differences between pre and post resting heart rate after continues and interval training [respectively, p=0.034, p=0.013]. Continues and interval exercise training have significant effects on heart rate recovery in 1,2 and three minutes after exercise [continues; tl: p=0.049, t2: p=0.033, t3: p=0.005. interval; tl: p=0.033, t2: p=0.038, T3: p=0.018]. Also there are not any significant differences between the effect of continues and interval exercise training on resting heart rate [p-0.311] HRR [tl:0.181, t2: 0.885, t3:953] after program. Both continuous and interval exercise training program improves resting heart rate and HRR minute's 1,2 and 3 in Post CABG patients and there are not any significant differences between two methods. This indicates the positive effects of exercise training on vageus tone and autonomic nervous system
ABSTRACT
It is reported that some inflammatory markers are predictive factors for atherosclerosis in childhood and adolescence and cardiovascular disease in adulthood. We investigated whether markers of inflammation including: cytokine [Interleukin-6 [IL-6]], acute-phase reactant [C-reactive protein [CRP]], white blood cell [WBC] count and its subgroups are associated with maximal oxygen consumption [VO[2max]] in overweight and normal children. Subjects were 26 boys aged 11-14 years included in two groups of overweight [n=10] and normal weight [n=16] children. VO[2max] was measured employing an incremental graded exercise test. IL-6 and CRP levels as well as WBC count were measured. Multivariable regression was employed to evaluate whether inflammatory markers were associated with VO[2max]. Mean VO[2max] for all subjects [n=26] was 36.35 +/- 10.42 ml/kg/min. This rate was lesser for overweight subjects [25.77 +/- 5.04] than in normal weight children [41.54 +/- 5.96]. Log IL-6, log CRP, and WBC count were correlated with VO[2max]. Also subgroups of WBC including Leukocytes, Lymphocyte, Neutrophils, Monocytes and Eosinophils associated with VO[2max]. IL-6, CRP and WBCs were inversely associated with aerobic or cardiorespiratory fitness levels measured by VO[2max] in children. This was independent of BMI of the subjects