جستجوی مقالات مرتبط با کلیدواژه « circuit resistance training » در نشریات گروه « پزشکی »

This study aimed to investigate the impact of 12 weeks of circuit resistance training at varying intensities on Apolipoproteins A (Apo A), B (Apo B), and J (Apo J) in men with obesity.

A total of 44 young men with obesity, aged 23-32 years, were divided into four groups: control (n=11), low-intensity (n=11), moderate-intensity (n=11), and high-intensity circuit resistance training (n=11) groups. The training program spanned 12 weeks and was conducted with three sessions per week. Blood samples were collected 72 hours before and 72 hours after the 12-week training programs. These blood samples were transferred to specialized plasma test tubes containing EDTA and were then centrifuged at 10 rpm for 10 minutes.

A significant decrease in Apo B levels (P < 0.0001) and an increase in Apo A levels (P < 0.05) were observed in the low-intensity training group compared to the control group. Additionally, a significant decrease in Apo J levels was observed in all exercise training groups compared to the control group (P < 0.05).

The findings of this study suggest that circuit resistance training, particularly at lower intensities, may lead to a reduction in the risk of cardiovascular diseases in obese individuals through the modification of Apo A, Apo B, and Apo J levels.

Obesity is one of the most serious health problems associated with inflammation. It has been found that functional and resistance physical activities improve obesity and inflammation. The aim of this study was to investigate the effect High-intensity Functional training (HIFT) and Circuit resistance training (CRT) on serum levels of the pro-inflammatory factor interferon gamma (IFN-γ) in obese women.

Thirty-six obese women of Semnan city (age: 32.66 ± 3.91, weight: 86.97± 9.08 and BMI> 30) were selected and divided into three groups of HIIF (n =12), CRT (n = 12) and control (n = 12) were divided. HIIF was performed in the form of cross-fit exercises and Circuit exercises in the form of weight training for 6 weeks. Finally, the IFN-γ was measured using the Human IFN-g Elisa kit 96t-zellbio. To examine the data, one-way analysis of variance and dependent t-test at the level of p≤0.05 were used and all calculations were performed using SPSS software version 24.

The results showed that there was no significant change in IFN-γ level in training groups compared to before training (P>0.05). Also, the results between groups did not show a significant difference in serum IFN-γ between HIIF and CRT (P>0.05).

Therefore, it seems that of exercise does not affect the dependent variable of serum interferon gamma levels.

Different hepatokines including the hepatocyte-derived fibrinogen-related protein 1 (HFREP1) are secreted by liver tissue, which can affect the lipid metabolism. The aim of present study was to investigate the effect of 12 weeks circuit resistance training with different intensity on the levels of HFREP1 and lipid profile in obese postmenopausal women.

Subjects of the study consisted of 44 postmenopausal women with average age of 56.07 ± 3.18 years old, dividing into the circuit resistance training with low (L-RT), moderate (M-RT), high (H-RT) intensity and the control groups (11 subjects in each group). Training program was conducted for 12 weeks and three session per week. Blood samples collected in pre and post-test stages and the levels of HFREP1 were measured by ELISA method and finally data was analyzed by Graphpad Prism software.

Analysis of HFREP1 data indicated that there were significant differences between different groups (P < 0.001). The results of Bonferroni post hoc-test showed that there was no significant difference between the control and L-RT groups (P > 0.05). However, HFREP1 in M-RT and H-RT groups significantly decreased compared to control group (P < 0.001). In addition, HFREP1 decrease in M-RT and H-RT groups was significant compared to L-RT group (P > 0.05). Lipid profile also improved in all trained groups, which further improvement observed in the H-RT group.

It seems that, higher intensity circuit resistance training is associated with further decrease in the levels of HFREP1, and improving the lipid profile can be attributed partly to downregulation of HFREP-1 levels.

Obesity and associated chronic inflammation lead to insulin resistance. The aim of this study was to evaluate the effect of varying intensity circuit resistance training on metabolic and inflammatory markers in obese men. In a semi-experimental trial, 44 obese men were selected and randomly divided into four groups, including 1) Control (n=11), 2) Low-intensity circuit resistance training (n=11), 3) Moderate-intensity circuit resistance training (n=11), and 4) High-intensity circuit resistance training (n=11). Resistance training was performed at different intensities, including 1) High-intensity circuit resistance training (80% 1RM), 2) Moderate-intensity circuit resistance (60% 1RM), and 3) Low-intensity circuit resistance training (40% 1RM), three sessions per week for 12 weeks. Serum levels of Dectin-1, TLR2, TLR4, MyD88 were measured using an ELISA kit. Data were analyzed with covariance analysis at P<0.05. Twelve weeks of moderate and high-intensity circuit resistance training significantly reduced weight, body mass index, serum levels of Dectin-1, TLR2, TLR4, MyD88, and HOMA-IR (P=0.001). The reduction of weight, body mass index, serum levels of Dectin-1, TLR2, TLR4, MyD88, and HOMA-IR were significant in obese men in the high-intensity training group compared to low-intensity training (P=0.001). It seems that circuit resistance training, especially high-intensity circuit resistance training, can be used as an option to reduce the inflammatory and metabolic complications associated with obesity.

Adipose tissue plays an important role in increasing systemic inflammation and exercise training result in modulating inflammation by decreasing adipose tissue. The present study aimed to investigate the effect of 12 weeks circuit resistance training with 40, 60 and 80 percent of one-repetition maximum (1RM) on the levels of IL-10, IL-1β and body fat percent in obese postmenopausal women.

Forty four  postmenopausal women (average age of 56.07 ± 3.18 years old) randomly divided into four group (each group 11 subjects) including the control and circuit resistance training with 40 (RT40), 60 (RT60) and 80 (RT80) percentage of 1RM. Exercise training program was conducted for 12 weeks and three session per week. Blood samples collected before and after the exercise training period. The ELISA method was used to measure the levels of IL-10 and IL-1β and data analysis performed with Graphpad Prism software.

IL-10 levels in trained groups compared to control group indicated significant increase (P < 0.05), in which the increase in RT60 (P = 0.014) and RT80 (P < 0.001) groups were also significant compared to the RT40 group. In addition, significant decrease of IL-1β in RT40 (P = 0.003), RT60 (P < 0.001) and RT80 (P < 0.001) groups compared to control group were observed, as such, IL-1β decrease in RT80 group compared to RT40 (P < 0.001) and RT60 (P = 0.001) group was also significant. Moreover, different intensity circuit resistance training was associated with decrease in percent body fat (P < 0.05), which further decreases reported in the RT60 and RT80 groups.

Despite the anti-inflammatory effects of different intensities of circuit resistance training, the higher intensity of exercise training can be associated with greater effectiveness in reducing inflammation and strengthening the anti-inflammatory pathways.

The aim of the present research was to investigate the effects of endurance continuous training (ECT), circuit resistance training (CRT), high intensity interval training (HIT) on fibrinogen and plasma viscosity in young obese men.

For this purpose, 44 young obese men voluntarily participated in the study, and randomly assigned into (CRT; n = 11), (ECT; n = 11), and (HIT; n = 11), and control group (Con; n = 11). ECT was done with 70% VO2max, while, HIT performed with 6 set of 3 minutes running at 90% of VO2max. Also, CRT was done at 11 stations with 20% 1RM, 3 times a week for 12 weeks. Blood samples were gathered before and after training protocols and fibrinogen and viscosity were measured in the plasma. To analyze the fibrinogen and viscosity, the blood samples were taken before and 72 hours after the last session of exercises.

The results showed that there is no significant difference between, HIT and CRT in the fibrinogen and viscosity after training (P > 0.05). However, the fibrinogen decreased significantly in the CRT (P = 0.001), HIT (P = 0.001) and ECT (P = 0.035) than control. Also, viscosity significantly decreased in the CRT (P = 0.001), HIT (P = 0.002) and ECT (P = 0.002) than control.

Finally, it can be said that none of continuous endurance, circuit resistance and high intensity interval training is preferable to improve plasma fibrinogen and viscosity. Although, they can reduce the levels of these indicators after 12 weeks.

Coronary artery disease (CAD) is the leading cause of death worldwide. It is well established that low level of high-density lipoprotein-cholesterol (HDL-C) is a strong and independent risk factor for CAD. Apolipoprotein M (apoM) is a component of HDL, which is involved in pre-β-HDL formation and cholesterol efflux to HDL. It is believed that resistance and aerobic exercise can significantly reduce risk of cardiovascular disease, especially by increasing serum levels of HDL-C. However, little is known about effects of these activities on HDL-apoM levels. The aim of this study was to investigate effects of circuit resistance training at different intensities on HDL-associated apoM levels in young untrained men.
           

Forty-five age- and weight-matched healthy untrained men were randomly assigned to a control group (n=10) and four training groups: 20% 1-repetition maximum (1RM) (n=9), 40% 1RM (n=8), 60% 1RM (n=7) and 80% 1RM (n=8). The subjects performed circuit resistance training consisting of barbell bench press, underarm flab, seated barbell curl, triceps exercise with chains, lying leg curl, squats, hyperextension, abs workout, sit-ups and quadriceps workouts (30 seconds each) in three bouts without rest between stations and with active rest (3 minutes) between sets or bouts. The training protocol was carried out for 45 minutes per session, three sessions a week, for five weeks. Venous blood samples were taken 48 hours before the first exercise session and 48 hours after the last training session. After separating plasma, HDL-associated apoM was measured using commercial ELISA kits. SPSS 16 was used for analysis of data using two-way ANOVA and Tukey's post hoc test at significant level of 0.05.
           

After the training intervention, the exercise groups had higher apoM levels in total HDL and HDL-2 compared to the control group (P>0.05). However, no significant difference in HDL-associated apoM level was observed between the study groups.
           

The results of this study indicate that various intensities of circuit resistance training can alter HDL-associated apoM levels. The decreased HDL-3-associated apoM level could indicate increased rate of apoM transfer to HDL-2, which could potentially prevent development of atherosclerosis and CAD by enhancing the antioxidant effects of HDL.
       

The overweight-related health problems among adolescents are obvious. Resistance training is recognized as a safe and efficacious exercise modality to have health-promoting effects in overweight adolescents. This study aimed to assess the efficacy of circuit resistance training (CRT) in improving inflammatory status, insulin resistance and body composition in overweight male adolescents.

Twenty overweight adolescent boys (aged: 18.5 (±1), weight: 81.1 (±4.5), body mass index: 27.7 (±0.7)) completed this study. The participants were randomly and equally divided into two groups of control (CG; n=10) and circuit resistance training (CRT; n=10). The CG did their daily routine activities and the CRT group performed its training protocol 3 days a week for 6 weeks. Body composition components and serum variables were measured a day before and after the study. Insulin resistance index was measured by HOMA-IR.

The subjects in the CG showed significantly increased changes compared with pre-training values. Moreover, significant changes were found fort the changes of BW (P-value= 0.005), BMI (P-value= 0.001) and BF% (P-value= 0.003) between groups.

This study suggested that although six weeks of CRT failed to induce meaningful anti-inflammatory cytokine responses, and to improve body composition and HOMA-IR in overweight adolescent boys, but had protective effects on inflammatory status, HOMA-IR and body composition and prevented them from being deteriorated.

aging is associated with an increase in vascular dysfunction but it can be prevented by exercise training. However, the effect of circuit resistance training as a useful training method in improving cardio-respiratory and muscular strength is unclear. The aim of this study was to investigate the effect of CRT on plasma endothelin-1, nitric oxide (NO) and vascular size in aged men. Twenty healthy aged men (55 ± 5 year) were randomly divided into control and CRT groups. CRT group performed circuit resistance training with 40 - 60 one repetition maximum for twelve weeks (3 times per week). Vascular size, plasma endothelin-1 and NO, blood pressure and heart rate were measured forty eight hours before and after the training period. CRT increased the vascular size and decreased endothelin-1 and systolic blood pressure compared to the pre-test; however, it had no effect on NO concentration and heart rate. In comparison with the control group, CRT significantly increased the vascular size and decreased endothelin-1 and blood pressure but there was no significant difference in NO concentration and heart rate between the two groups. Circuit resistance training as a proper training method could induce the increase in endothelial function in aged individual and prevents vascular dysfunction related to aging.

Apolipoprotein O (apoO) is a 198 amino acids protein that exists predominantly in high-density lipoprotein (HDL). It may exert cardioprotective effects via decreasing fat accumulation and increasing removal of cholesterol from macrophages. Although the health benefits of exercise are well documented, no study has yet investigated the effects of various types of training, including resistance training on apoO level. Therefore, we aimed to determine effects of five weeks of circuit resistance training with different intensities on plasma levels of apoO, HDL, total cholesterol (TC) and triglyceride (TG) in young untrained men.            Forty-five age- and weight-matched healthy untrained men were randomly assigned to a control group (n=10) and four training groups: training at 20% intensity (n=9), training at 40% intensity (n=8), training at 60% intensity (n=7) and training at 80% intensity (n=8). The subjects performed circuit resistance training at 10 stations (30 seconds at each station) with three repetitions, without rest between stations and with 3-minute active rest between the repetitions. The training was carried out for 45 minutes per session, three sessions a week, for five weeks. Venous blood samples were taken 48 hours before the first exercise session and 48 hours after the last training session. Plasma levels of apoO, HDL, TC and TG were measured using commercial kits. Data were analyzed using repeated measures ANOVA and Tukey's post hoc test at significance level of 0.05.            After the training intervention, mean plasma level of TC and TG did not differ significantly between the study groups (P>0.05). Training at 80% of one-repetition maximum (1RM) caused a slight decrease in the apoO concentrations. Moreover, apoO concentration was significantly higher in the 20% 1RM training group compared to other study groups (F=11.599, P<0.002).            Our results indicate that circuit resistance training at 80% of 1RM can decrease HDL-associated apoO level but does not significantly alter other parameters.        

Aging and low physical activity results in a decrease in Adiponectin and an increase in leptin, which can cause cardiovascular diseases, obesity and diabetes. The aim of present study was to investigate the effect of 8 weeks circuit-resistance training (CRT) with Zataria multiflora (Z. multiflora) supplementation on plasma leptin and adiponectin in postmenopausal women.

48 untrained postmenopausal women took part in this study. The participants were randomly divided in 4 groups with 12 persons in each: resistance training (RTG), Z. multiflora (ZG), control (CG) and Z. multiflora- resistance training (ZRTG). Resistance training program contained 12 stations (each station 30 second with 35 percent of one maximum repetition) and continued for 8 weeks (3 sessions per week). Participants in the ZG and ZRTG consumed 500 mg of Z. multiflora supplementation daily before breakfast. Blood samples were collected 48 hours before first session and 48 hours after last session to measure plasma levels of leptin and Adiponectin.

Significant difference between ZRTG and CG in plasma Adiponectin was observed (P˂0.05). However, there was no significant difference between groups in leptin (P˃0.05).

This study indicated that CRT can cause a decrease in leptin and an increase in Adiponectin. Also, when Z. multiflora intervention included in the training program, this effects increased.