جستجوی مقالات مرتبط با کلیدواژه "pre-hypertension" در نشریات گروه "تربیت بدنی"

Endothelial dysfunction is the fastest symptom of vascular dysfunction in obese individuals also the onset of pre-hypertension development and along with lipid profiles can lead to dangerous cardiovascular diseases. The aim of this study was to investigate the effects of eight weeks circuit resistance training (CRT) on some endothelial markers, blood pressure and lipid profiles in pre-hypertensive obese women.

For this purpose, 24 pre-hypertensive obese women (age 44.73 ± 4.43 years, body max index 32.39 ± 3.8kg/m2, systolic blood pressure 13.21 ± 0.61 and diastolic 8.65 ± 0.33 mmHg) were randomly assigned to CRT and Control groups. CRT group performed circuit resistance training for eight weeks, three sessions per week and each session was 50 to 60 minutes. Resistance movements performs in the form of three circles and nine stations, including four upper body movements (chest press, lateral pull down, seated cable row, biceps cable curl) and three lower body movements (leg press, seated leg extension, leg curl), and two core-body movements (crunch and back extension) with 12-15 repetitions, which according to the recommendations of the American Heart Association was 40% 1RM for upper body and 60% 1RM for lower body movements. Control group didn’t have any training activities during the intervention. Blood pressure, anthropometric measurements and blood samples were collected 48 hours before the intervention and 48 hours after the last training session.

The results showed that eight weeks of circuit resistance training can significantly reduce body fat percentage (P = 0.005), waist to hip ratio (P = 0.043), systolic (P = 0.001) and diastolic (P = 0.002) blood pressure and triglycerides (P = 0.043) and significantly increase nitric oxide levels (P= 0.008).

It seems that eight weeks of CRT can decrease blood pressure by decline some lipid profile and also increase in nitric oxide levels by increase in capillary network in active muscles, and vascular flexibility.

The aim of this study was to investigate the effects of eight weeks Circuit Resistance Training (CRT) on some inflammatory cytokines, blood pressure and insulin resistance in pre-hypertensive obese women. For this purpose, 24 pre-hypertensive obese women (mean age: 44.73±4.43 years, body mass index: 32.39±3.8 kg/m2, systolic: 13.21±0.61 mmHg and diastolic: 8.65±0.33 mmHg blood pressure levels), were conveniently selected and randomly divided into CRT training (n=12) and Control (n=12) groups. The intervention consisted of 8 weeks of circuit resistance training, with a frequency of 3 sessions per week, and each session lasted 50 to 60 minutes (15 minutes of warm-up, 30 minutes of weight training, and 10 minutes of cooling). Resistance trainings were performed with an intensity of 40% 1RM for upper body and 60% 1RM for lower body movements. Measurements and blood sampling were done pre and post 8 weeks of training. Data were analyzed using Shapiro-Wilks and analysis of variance with a 2×2 design at a significance level of p˂0.05. The results showed that 8 weeks of CRT have significant effects on body fat percent (p=0.007), Waist to Hip Ratio (p=0.017), systolic (p<0.0005) and diastolic (p=0.016) blood pressure and insulin resistance (p=0.043). However, it was not significant in the inflammatory cytokines IL-1β and TNF-α (P ≤ 0.05). The reason could be the type of exercise selected. Depending on the intensity, frequency and duration of the training, they can affect the levels of inflammatory cytokines to a different extent.