Effects Of Circuit Resistance Training Research Articles

TheEffects of Eight Weeks of Circuit Resistance Training on Serum METRNL Levels and Insulin Resistance in Individuals with Type 2 Diabetes.

The effects of exercise training on meteorin-like protein (METRNL), one of the newest factors involved, is one of the treatment strategies for diabetes. The present study aimed to investigate the effects of circuit resistance training on METRNL and insulin resistance in people with Type 2 Diabetes Mellitus (T2DM). Twenty eligible diabetics volunteered to participate and were randomly divided into control (n = 10, age = 51 ± 1years, BMI = 27.43 ± 0.98kg/m2) and experimental groups (n = 10, age = 51 ± 1years, BMI = 30.12 ± 0.92kg/m2). The circuit resistance training (10 exercises) used in this study was performed for eight weeks (3 non-consecutive sessions/week, 2-4 circuits, 40%-80% 1RM, 15-6 repetitions). The rest period between each exercise was 20-30s, and the rest between each circuit was 3min. Participants in the control groups were asked to maintain their daily physical activities and not to engage in any systematic training program throughout the study. METRNL did not change significantly in the control group (0.66 ± 0.06 to 0.7 ± 0.04), but it increased significantly in the experimental group (0.3 ± 0.06 to 0.71 ± 0.03, p = 0.001); In contrast, FBS increased significantly in the control group (122.8 ± 7.5 to 192.8 ± 14.9) and decreased significantly in the experimental group (197.2 ± 7.1 to 135.00 ± 14.00, p = 0.001). Insulin in control and experimental groups did not change significantly (p = 0.96); However, the IR of the control group increased significantly (6.37 ± 1.46 to 9.6 ± 1.53), but its level was significantly attenuated in the experimental group (4.89 ± 1.37 to 4.38 ± 1.44, p = 0.028). Eigth weeks of circuit resistance training with low to high intensities can increase the resting levels of METRNL in men with T2DM, which can be significantly associated with the improved fasting blood glucose levels and insulin resistance.

Rehabilitation effects of circuit resistance training in coronary heart diseasepatients: A systematic review and meta-analysis.

Background and HypothesisThe rehabilitation effect of circuit resistance training in coronary heart disease (CHD) patients remains unclear. We perform this review to examine the rehabilitation effect of circuit resistance training in CHD patients and to provide a basis for the formulation of reasonable individual exercise prescriptions for CHD patients.MethodsRandomized controlled trials (RCTs) were searched on PubMed, Web of Science, The Cochrane Library, Embase, Clinical Trials, and CNKI. About 1232 studies were identified. Nine RCTs were finally used for the present meta‐analysis to determine the rehabilitation effect of circuit resistance training in CHD patients, compared to aerobic training. Individuals enrolled for the studies were at a mean age of 60.5 years old and were all CHD patients. Following the PRISMA guidelines, we extracted basic information about the study and patient characteristics, as well as measurements (e.g., the peak oxygen uptake, the body mass index [BMI], the body fat percentage, the systolic blood pressure, the total cholesterol, and triglycerides). Subsequently, this meta‐analysis determined the overall effect by using standardized mean difference (SMD) and 95% confidence interval (CI).ResultsCompared with aerobic training, circuit resistance training significantly decrease the BMI and the body fat percentage.ConclusionsAs suggested from the present meta‐analysis of RCTs, circuit resistance training is effective in improving the BMI and the body fat percentage in CHD patients and may help delay the progression of CHD. CRT has the advantage of lower load in most cases with a similar effect.

Appetite and energy intake following a bout of circuit resistance training in chronic hemiparetic stroke patients: a preliminary randomized controlled trial

ABSTRACT Purpose The main aim of this study was to investigate the effects of circuit resistance training (CRT) on post-exercise appetite and energy intake in chronic hemiparetic stroke patients. A secondary aim was to evaluate the reproducibility of these effects. Methods Seven participants met the eligibility criteria and, in a randomized order, participated in a non-exercise control session (CTL) and two bouts of CRT. The CRT involved 10 exercises with 3 sets of 15-repetition maximum per exercise, performed using a vertical loading approach, with each set interspersed with 45s of walking. Expired gases were carried out to calculate the net energy cost of the exercise and the relative energy intake post-CTL/CRT. Hunger, fullness, desire to eat, and energy intake were assessed at baseline and for 12 h after CTL and CRT. Results Compared to CTL, hunger, desire to eat (P < .001), and relative energy intake (P < .05) were significantly lower after CRT, whereas the perception of fullness was significantly higher (P < .001). Significant differences between CTL and CRT were observed only for the first 9 h of the post-exercise period for hunger, fullness, and desire to eat (P < .05). No significant differences in appetite or relative energy intake were observed between the two bouts of CRT. Conclusions A bout of CRT elicited decreased post-exercise appetite and relative energy intake in chronic hemiparetic stroke patients. Decreased appetite perceptions lasted for around 9 h and were reproducible.

The Effect of Circuit Resistance Training With Varying Intensity on Selected Inflammatory Markers in Obese Men

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&lt;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.

Effects of Circuit Resistance Training on Body Composition, Strength, and Cardiorespiratory Fitness in Middle-Aged and Older Women: A Systematic Review and Meta-Analysis

A systematic review with meta-analysis was conducted to evaluate the effects of circuit resistance training (CRT) on cardiorespiratory fitness, strength, and body composition in middle-aged and older women. Sixteen studies were included in the meta-analysis. The CRT interventions led to a significant decrease in weight, body mass index, and fat mass along with an increase in muscle mass. Significant differences were found in the fat mass and a trend to develop muscle mass when compared with the control group. CRT led to a significant increase in VO2max, walking endurance, and time to exhaustion; likewise, significant differences were observed when compared with the control group. CRT had a moderate and large favorable effect on arm, trunk, and lower limb strength. Furthermore, the increases in strength observed in the CRT were significantly greater than the changes observed in the control group. In middle-aged and older women, CRT improved cardiorespiratory fitness and strength and optimized body composition.

The effect of circuit resistance training on plasma levels of amino acids, alpha-hydroxybutyrate, mannose, and urinary levels of glycine conjugated adducts in obese adolescent boys.

Few studies have examined the improving effects of exercise on the association between metabolites of impaired protein metabolism and insulin resistance in obese children. Therefore, this study aims to investigate the effect of circuit resistance training (CRT) on plasma levels of amino acids, alpha-hydroxybutyrate (α-HB), mannose, and urinary levels of glycine conjugated adducts in obese adolescent boys. Forty obese adolescent boys (body mass index above the 95th percentile) with an age range of 14-17 years were randomly divided into the CRT group (n = 20) and control group (n = 20). The CRT program (3 times/week, 70%-80% of 1-repetition maximum) was performed for 8 weeks. The results indicated that the body composition and plasma levels of glucose, insulin resistance, valine, mannose, lysine, and the sum of branched-chain amino acids (BCAA) were decreased because of CRT. The plasma levels of asparagine, glycine, serine, and urinary levels of glycine conjugated adduct also increased in the CRT group. Although α-HB level decreased during CRT, it had no significant difference from that of the control group. It can be concluded that the improvement in obesity complications including insulin resistance in obese adolescent boys after CRT may be due to decrease in plasma levels of mannose and BCAA and increase urinary metabolites. Novelty: CRT improves glucose metabolism and insulin resistance in obese adolescent boys. CRT decreases plasma levels of mannose and BCAA and normalizes other amino acids. CRT increases urinary levels of glycine conjugated adducts.

Effects of circuit resistance training on muscle power, functional agility, and bones' mineral content in people with spinal injury.

Physical exercise is one of the main agents when it comes to rehabilitation and changes in health aspects of people with SCI. This study aimed to establish the effects of circuit resistance training (CRT) on people with spinal cord injury (SCI), specifically on their body composition, muscle strength, anaerobic power, and functional capacity. Sample consisted of five people with SCI: both sexes, ages between 25 and 62 years, and 12 weeks of CRT, twice a week. Before and after the 12 weeks of intervention, this research adopted clear-cut tests (medicine ball pitch, Wingate, zigzag, and dual-energy X-ray densitometry) to analyze the desired variables (muscle strength, anaerobic power, functional capacity, and body composition). Showed muscle strength improvement (P=0.028), agility increase (P=0.028), and equal levels of lean mass, bone mineral content, and bone loss index throughout life (T-score). Therefore, one can consider that CRT is an alternative to develop the upper limbs muscle power and functional agility. Together, all these variables may imply an overall improvement of the functional capacity in people with SCI. Additionally, these 12 weeks of CRT were responsible for helping the maintenance of lean mass, bone mineral content and T-score in this study's sample.

The Effects of Circuit Resistance Training on Inflammatory Status, Insulin Resistance and Body Composition in Overweight Adolescent Boys

Objective: 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. Materials and Methods: 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. Results: 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. Conclusion: 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

Effect of Circuit Resistance Training and L-Carnitine Supplementation on Body Composition and Liver Function in Men with Non-Alcoholic Fatty Liver Disease

Background: Exercises and L-carnitine supplementation are effective for liver function. Objectives: The purpose of this study was to compare effect of circuit resistance training and l-carnitine supplementation on body Composition and Liver Function in men with non-alcoholic fatty liver disease (NAFLD). Methods: In this semi-experimental study, 40 men with NAFLD were selected through purposive sampling and were randomly assigned to one of four groups includes: (1) resistance training, (2) supplement, (3) combined (exercise- supplement) and (4) control. Circuit resistance training was performed for 12 weeks, three sessions per week, with a training intensity of 40% - 80% maximum one-repetition. In the combined and supplementation group, 10 mg L-carnitine supplement per kg body weight was consumed daily with three main meals. To analyze the data, dependent t-test and one-way analysis of variance were used at P ≤ 0.05. Results: After exercise, there was a significant decrease in body mass index and body fat percentage in the resistance training group and combined (exercise-supplement) group when compared to the control and supplementation groups. There was also a significant decrease in the level of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in the intervention groups including exercise, supplement, and combined (exercise-supplement) groups compared to the control group. The percentage of changes in AST and ALT was significantly higher in the combined group than in the training and supplement groups. Conclusions: According to the findings of this study, circuit resistance and complementary L-carnitine training are effective for improving liver function. This improvement was more evident in the combination of training and L-carnitine supplementation, and these shifts are independent of changes in body composition.

The effect of circuit resistance training, empagliflozin or \u201cvegeterranean diet\u201d on physical and metabolic function in older subjects with type 2 diabetes: a study protocol for a randomized control trial (CEV-65 trial)

BackgroundTreatment of the older diabetic individual comprises a therapeutic challenge. Currently little scientific evidence exists depicting the best approach to type 2 diabetes treatment in this growing sub-population of patients. The purpose of this study is to assess the effects of a modified plant-based Mediterranean diet (“vegeterranean” diet), circuit resistance training (CRT) and empagliflozin, separately or in combination, on body composition and physical function in older subjects with type 2 diabetes. The rationale for this study is to assess three interventions associated with a negative energy/caloric balance (increased caloric use in exercise, caloric restriction in the “vegeterranean” diet and caloric wasting by glycosuria with empagliflozin), their interaction and effect on body composition and physical function.MethodsOne hundred and twenty men and women ≥65 years of age with type 2 diabetes, and low levels of physical activity will be randomized (1:1:1 manner, gender stratified) for 10 weeks to one of 3 parallel arms: CRT consisting of 3 home sessions/week; ad-libitum plant-based Mediterranean diet (limited consumption of eggs, dairy and fish, avoidance of red meat and poultry) or empagliflozin 10 mg/day. After 10 weeks CRT will be added to the empagliflozin and diet arms for an additional 10 weeks. Allocation concealment and blinding of primary outcome assessors will be implemented. Efficacy will be determined by assessment of lean body mass, body weight, frailty and functional status, sarcopenia, HbA1c and quality of life questionnaires. Safety will be evaluated by routine monitoring of adverse events. This study was approved by the Tel-Aviv Sourasky Medical Center Institutional Review Board.DiscussionThe combination and comparison of these diverse interventions to metabolic control may lead to better understanding of their mechanism of action with potential clinical implications in older individuals. Also, this study will provide evidence of the effectiveness of these interventions on delaying the progression from diabetes to sarcopenia and/or frailty.Trial registrationClinicalTrials.gov PRS: NCT03560375. Last registration date (last update): 06/06/2018. The trial was a-priori registered before actual recruitment of subjects.

Impact of High-Intensity Interval Training and Circuit Resistance Training protocols on Serum Levels of Interleukin-10, Lipid Profile, Body Composition and Insulin Resistance Index in Overweight Male Adolescents

Background: High intensity interval training (HIIT) and circuit resistance training (CRT) have been introduced as useful strategies for weight management in overweight and obese individuals. However, little is known about their effects on inducing anti-inflammatory cytokine response, and improving body composition and metabolic profile (lipid profile and insulin resistance index (HOMA-IR)) in overweight adolescents. Objectives: This study aimed at examining the effects of HIIT and CRT on serum levels of interleukin-10 (IL-10), lipid profile, body composition and insulin resistance index (HOMA-IR) in overweight male adolescents. Methods: Twenty overweight male adolescents were divided into two groups of HIIT and CRT. The blood samples were drawn from all participants before the beginning of exercise protocols and after one day the last session of the exercise protocols. Results: Following 6 weeks of both HIIT and CRT protocols, serum levels of IL-10 increased insignificantly in both groups (P > 0.05). However, that of IL-10 showed a much more increase in HIIT group. Furthermore, unlike CRT protocol, six weeks of HIIT improved body composition, lipid profile and HOMA-IR in overweight male adolescents. Conclusions: By this study, it seems that HIIT has more potent impact than CRT on inducing an anti-inflammatory cytokine response. Moreover, HIIT is a more appropriate exercise modality than CRT to improve body composition and metabolic profile (lipid profile and HOMA-IR) in overweight male adolescents.

EFFECT OF CIRCUIT RESISTANCE TRAINING ON BLOOD BIOMARKERS OF CARDIOVASCULAR DISEASE RISK IN OLDER WOMEN

The purpose of this study was to analyze the effects of circuit resistance training (CRT) on blood biomarkers of cardiovascular disease risk in older women. Nineteen physically independent older women (≥ 60 years) were randomly assigned to one of the two groups: control (CG, n = 9) and CRT (n = 10). The CRT performed a resistance exercise program for 12 weeks, with 10 exercises: unipedal balance, squat, bench press, seated row, triceps push-down, preacher curl, shoulder adduction, throw medicine ball into the floor, stationary run, and abdominal isometric contraction, with three sets per exercise. Anthropometry, total cholesterol, triglycerides, low density lipoprotein cholesterol (LDL-c), high density lipoprotein cholesterol (HDL-c), very low-density lipoprotein cholesterol (VLDL-c), glucose were measured. Main effect of time ( p < 0.05) was observed for total cholesterol (-9.9%), LDL-c (-16.1%), VLDL-c (-15.9%) and HDL-c (+10.2%) in the CRT. The composite Z-score was reduced significantly for the CRT group but not for CG. The 12 weeks of CRT were effective for reducing total cholesterol, LDL-c, VLDL-c, triglycerides and increase HDL-c. In addition, the decrease in composite Z-score suggests that CRT can reduce cardiovascular disease risk in older women.

Effect of circuit resistance training on blood biomarkers of cardiovascular disease risk in older women

Effect of circuit resistance training on blood biomarkers of cardiovascular disease risk in older women

The Effect of Circuit Resistance Training on Plasma Concentration of Endothelin-1, Nitric Oxide and Vascular Diameter in Elderly Men

Background: 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. Objectives: 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. Methods: 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. Results: 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. Conclusions: 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.

The effect of 8 weeks of Circuit Resistance Training on metabolic syndrome risk factors and body composition in women over age 50 with diabetes mellitus type 2

Abstract&#x0D; Introduction: The prevalence of type 2 diabetes mellitus (T2DM) increased significantly in the last three decades, and effective strategies to manage and prevent this disease are urgently needed. Physical activity and exercise training is an effective way for metabolic syndrome risk factors in type 2 diabetes mellitus (T2DM) patients. However, the effects of Circuit Resistance Training (CRT) program on patients T2DM are unknown. The purpose of this study is to investigation the effect of 8 weeks of Circuit resistance training (CRT) on metabolic syndrome and body composition in women over age 50 with T2DM.&#x0D; Methods: Twenty women over 50 years old with diabetes Referred to diabetes Center of 17 Shahrivar hospital in Amol and they were divided randomly into two groups; Circuit resistance (n=10) and Control (n=10).&#x0D; Resistance training consisted of 10 stations for 8 weeks and 3 sessions per week (Intensity 60-80% 1RM). Levels of Lipid profile and body composition before and after eight weeks training in both groups were measured. Statistical analysis of the data was carried out by SPSS (v. 22).&#x0D; Results Fasting Blood Sugar (FBS) levels (P=0.021), Triglycerides (0.010), high-density lipoprotein cholesterol (0.042), significant decreased in CRT. Also after 8 weeks circuit resistance training, BMI (P= 0.003), WHR (P=0.004) and body fat present (0.019) significant decreased in CRT.&#x0D; Conclusion: According to our results, CRT was an effective approach to improve the Anthropometrics, FBS, lipid profile in women over age 50 with diabetes mellitus type 2. Moreover, CRT did have influence on LDL level. &#x0D; Keywords: Circuit resistance training, insulin resistance, metabolic syndrome, body composition

Changes in Cardiometabolic Risk Factors after High-Velocity Circuit Resistance or Treadmill Training in Older Adults

Cardiometabolic syndrome (CMS) is an aggregation of major risk factors that increases a person’s risk for developing cardiovascular disease, diabetes mellitus and the risk of mortality from cardiovascular disease. Continuous treadmill training (TM) has been shown to effectively attenuate the magnitude of CMS risk factors in a multitude of clinical populations. However, there is a paucity of research on the effects of high-velocity circuit resistance training (CRT) on CMS risk factors in older adults. PURPOSE: To compare the effects of CRT versus TM versus no exercise (CONT) on older adults with CMS risk factors. METHODS: Thirteen subjects (1M, 12F; 68.5 ± 7.3 years) with multiple risk factors for CMS participated in 12-weeks of CRT or TM. BMI, body fat % (BF), waist circumference (WC), systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (TG), fasting glucose (GLUC), glycated hemoglobin (A1C), and c-Reactive Protein (CRP) were measured before and after the training. Nutritional intake was monitored to eliminate influence on CMS biomarkers. RESULTS: A within-group analysis showed that CRT exhibited significant decreases in A1C (MD= -0.367, SE= .142, p=0.03), SBP (MD= -21.67, SE= 6.35, p<.01), and DBP (MD= 9.33, SE= 2.53, p=.01), while TM had a trend toward decreased LDL-C (MD= 15.25, SE= 8.16, p=.09), and CONT showed a trend toward increases in CRP (MD= -0.16, SE= .08, p=.08). CRT also exhibited greater decreases in BMI, BF, and CRP than TM and CONT after the intervention, although statistical significance was not reached. There were no significant changes in TC, LDL-C, TG, or GLUC in any group. A between-group analysis showed CRT had significantly greater decreases in DBP compared to TM (MD= -10.58, SE= 3.34, p=.03) and CONT (MD= -12.13, SE= 3.19, p= .01) and a trend toward decreased SBP compared to CONT (MD= -19.47, SE= 8.03, p= .08). CONCLUSION: These preliminary results indicate that CRT results in greater improvements in CMS risk factors than TM. Although statistical significance was not reached for certain risk factors, a larger subject pool may strengthen our results.

Hemodynamic Changes Following High-Velocity Circuit Resistance or Treadmill Training in Adults with Cardiometabolic Risk Factors

Cardiometabolic syndrome (CMS) is classified as a combination of maladaptive cardiovascular and metabolic abnormalities that includes hypertension, dyslipidemia, and blood vessel dysfunction. These outcomes can negatively influence hemodynamics (HDYN) via a decrease in myocardial efficiency due to increased afterload and/or decreased vascular elasticity. Studies have reported changes in HDYN during and following acute exercise in clinical populations. However, there is a paucity of information on how high-velocity circuit resistance training (CRT) compared to continuous treadmill exercise (TM) affects these parameters at rest. PURPOSE: To compare the effects of CRT, TM and no exercise (CONT) on HDYN variables at rest in older adults with multiple CMS risk factors. METHODS: Eleven women (66.4 ± 6.4 years) participated in 12-weeks of CRT or TM. Stroke volume (SV), cardiac index (CI), systemic vascular resistance (SVR), end-diastolic volume (EDV), ejection fraction (EF), and oxygen consumption (rV02) were measured by impedance electrocardiography and indirect calorimetry before and after training. RESULTS: A within-group analysis revealed significant increases in CI (MD= 0.257, SE= .092, p=.023) and EDV (MD= 31.10, SE= 11.96, p=.032), a trend towards an increase in SV (MD=8.63, SE=4.28 p=.07) and a decrease in SVR (MD=−154.15, SE=71.07, p=.06) for CRT. TM resulted in significant increases in CI (MD=.218, SE=.080, p=.026) and EDV (MD=26.16, SE=10.36, p=.035); however, increases were not comparative to those seen with CRT. The CONT group showed a significant decrease in rVO2 (MD=−1.60, SE=.64, p=.03). No significant differences were observed for EF. At post-testing CONT resulted in a decrease in rVO2 approaching significance compared to TM (MD=−3.10, SE=1.12, p=.07). CRT demonstrated more favorable changes in SV, CI, SVR and EDV than TM or CONT. However, these changes did not reach statistical significance. CONCLUSION: These preliminary results indicate that CRT and TM lead to significant favorable changes in CI and EDV, however, CRT showed greater improvements in each and a trend towards improvements in HDYN when compared to TM and CONT. It is expected that completion of testing on existing subjects will further strengthen our results.

Effects of circuit resistance training on the quality of life and disability of women with low back pain

Abstract Introduction: Back pain is a serious social problem which frequently affects women. So far, the effectiveness and safety of physical activities recommended to them have not been confirmed scientifically. The aim of the work was to determine the influence of circuit resistance training on the quality of life and disability of women with back pain. Materials and methods: The study included 25 women (mean age 52.81 ± 13.83 years) with back pain in the course of degenerative changes in the lumbar spine. Circuit resistance training was done on the machines with hydraulic resistance. Prior to the training, each participant was diagnosed on the basis of the McKenzie functional assessment. The quality of life was evaluated with the use of SF-36 survey, while pain intensity was assessed with visual analogue scale (VAS). The level of disability was examined with Roland-Morris disability questionnaire (RMDQ). The examinations were repeated after a three-month period of training and compared with a control group including 31 women (mean age 43.43 ± 14.64 years) who did not take up any physical activity in this period. Results: In the research group, 73.68% of the subjects improved their quality of life assessed with SF-36 survey, mainly in the category of physical functioning (p=0.006). Moreover, their disability decreased significantly (p=0.01) and pain subsided (p=0.003) compared to the control group. Conclusions: Circuit resistance training decreased low back pain, reduced disability and improved the quality of life of the subjects. This type of training may be recommended to individuals with non-specific low back pain.

Effects of Circuit Resistance Training with Crocus sativus Supplementation on Insulin and Estradiol Hormones Response

Effects of Circuit Resistance Training with Crocus sativus Supplementation on Insulin and Estradiol Hormones Response

Circuit resistance training improved endothelial dysfunction in obese aged women

It is widely accepted that obesity is associated with endothelial dysfunction. In a recent paper, we have also found circuit resistancetraining may reduce visceral fat in obese aged women. Accordingly, the current study was conducted to ascertain the effects of circuit resistancetraining on markers of endothelial dysfunction in this population group. In the present interventional study, a total of 48 obese aged women were recruited from the community. Twenty-four of them wererandomly assigned to perform a 12-week resistance circuit training programme, 3-days per week. This training was circularly performed in 6stations: arm curl, leg extension, seated row, leg curl, triceps extension and leg press. The Jamar handgrip electronic dynamometer was used toassess maximal handgrip strength of the dominant hand. Lastly, serum samples were analysed using an immunoassay (ELISA) for endothelin-1,intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). When compared to baseline, resistance training significantly reduced serum levels of endothelin-1 (2.28 ± 0.7 vs. 1.98 ± 1.1 pg/ml;p = 0.019; d = 0.67) and ICAM-1 (290 ± 69 vs. 255 ± 76 ng/ml; p = 0.004; d = 0.92) in the experimental group. No significant changes inany of the tested outcomes were found in the control group. A short-term circuit resistance program improved endothelial dysfunction in aged obese women. Further studies on this topic arestill required to consolidate this approach in clinical application.