جستجوی مقالات مرتبط با کلیدواژه "body fat percent" در نشریات گروه "تربیت بدنی"

Adipolin is an anti-inflammatory and insulin sensitive adipocytokine that can be considered as modulating glucose intolerance and also insulin resistance. It is secreted from white adipose tissue and its level can decrease in obese and diabetes people. The aim of this study was to evaluate the effect of eight weeks of continuous training with 45-60% maximum heart rate on plasma levels of adipolin, insulin sensitivity, and body fat percent in overweight and obese women.

In this semi experimental study, 30 overweight and obese women were selected and randomly divided into experimental (n=15) and control (n=15) groups. The experimental group performed running protocol at an intensity of 45-60% maximum heart rate for 30 minutes. The exercise started with a 45% maximum heart rate in the first session, while the intensity was gradually added about 5% every week, based on the subject’s physical fitness level. Further, it was maintained up to the end of the program when the subjects reached their 60% maximum heart rate. The blood sample was measured after 12 hours of fasting in pre and post-test phases to measure the variables. The Shapiro-Wilk normality test was done while intra–inter group changes were identified by paired t and independent t-tests respectively, at the significance level of p<0.05.

After eight weeks of continuous training with light to moderate intensity, plasma adipolin levels (p<0.001) and insulin sensitivity (p<0.001) increased significantly as compared to pre-workout while body fat percentage was significantly decreased (p<0.0001). The comparison between the groups showed that plasma adipolin levels (p<0.001) and insulin sensitivity (p<0.001) significantly increased in the experimental group compared to the control group, that the body fat percentage also indicated a significantly (p<0.001) decrease.

Based on the results of this study, light to moderate intensity continuous training can be considered in some disorders associated with overweight and obesity, by increasing adipolin, insulin sensitivity, and reducing body fat percentage.

despite role of aerobic exercise training in controlling type 2 diabetes, effectiveness of different aerobic training intensity’s and their mechanism is unknown. Therefore, the aim of present study was to investigate the effect of eight weeks' low and moderate intensity aerobic training on levels of HbA1C, some hematological parameters and percent body fat in men with type 2 diabetes. subjects in present study was consist of 33 obese and overweight men with type 2 diabetes with average age of 43.2 ± 8.03 and BMI 28.63 ± 2.71 that randomly assigned in three groups (11 in each group) including control, low intensity aerobic exercise training and moderate intensity aerobic training. Low intensity aerobic training program were performed with 50 percent of maximum heart rate (MHR) and moderate intensity aerobic training with 70 percent of MHR. Training program continued for eight weeks and three sessions in week for 45-60 minutes in each session. results indicated that HbA1C, glucose and percent body fat significantly (p<0.05) decreased in both training groups. However, lipid profile significantly was improve only in moderate intensity aerobic training group. Moreover, HbA1C decrease and VO2peak increase in moderate intensity group was significantly diffrent to low intensity group. It seems that low intensity aerobic training in comparison to moderate intensity aerobic training are associated with lower adaptations and improvement in type 2 diabetes patient.

The aim of this study was to examine the effect of 8 weeks of aerobic and low intensity resistance training on adiposity anthropometric indices including body mass index (BMI), waist circumference (WC), waist to hip ratio (WHR), waist to height ratio (WHtR), body fat percent (%BF), arm circumference (AC), hip circumference (HC) and thigh circumference (TC) in middle-aged overweight women. 30 volunteered women with regular menstrual cycle and 25≤BMI≥30 were randomly divided into aerobic and low intensity resistance training groups. The aerobic training consisted of 60% of HR intensity and resistance training included 40-45% 1RM intensity. The covariance analysis test was used to compare the differences between the two groups and paired t test was applied to compare the differences between pretest and posttest of each group. The results showed a significant difference between aerobic and resistance groups in AC (P=0.04) and TC (P=0.02) at the end of the experiment (P≤0.05). However, no significant differences were observed in other variables between the two groups. According to the results, low intensity resistance training was more effective than aerobic training to reduce indices of adiposity.

The purpose of this study was to obtain normative values of body fat percent for athlete and non-athlete male adolescent in Tehran city.

For this reason, 619 boys (11-12 years of age) including 306 athletes among 8 sports (with mean weight 33.9±6.0 kg and height 142.4±6.9 cm) and 313 non athletes (with mean weight 33.2±7.6 kg and height 140.5±6.7 cm) were selected randomly and participated in this descriptive study. Body fat percent calculated using slaughter equation and normative values of body fat percent for both athletes and non-athletes were obtained using descriptive statistics.

The findings showed that normative values of body fat percent for athletes were in ranges of 8.72-19.09. Normative values of body fat percent for non-athletes were in range of 8.36-18.73. However, there were no significant differences between norms of body fat percent in athletes and non athletes.

With respect to result of this study, cultureal programs account into consideration for promotion knowledge about adverse effects of sedentary life especially in children and adolescents.

This study was conducted to determine the validity and reliability of skin fold and bioelectrical impedance methods in detecting body fat percent in comparison to the hydrostatic method.

For this reason, 40 students of Shahid Chamran University of Ahvaz (age, 22.2±2.73 years; height, 176.27±6.08 cm; and weight, 69.92±7.41 kg) were randomly chosen. Body density (BD) was determined by using hydrostatic, skin fold (seven site equation of Jackson & Pollock) and bioelectrical impedance (BIA) methods. Thereafter, body fat percent (BF%) was calculated for all methods using the Siri’s equation. Statistical analyses were performed using Pearson’s correlation coefficient and paired t-test at P<0.05.

Data analysis showed a significant difference between skin fold method and hydrostatic method (R=0.959, P<0.001). The validity of BIA machine in comparison with criterion method was confirmed (R=0.946, P<0.05).

Based on the findings of this investigation, it could be concluded that the BIA method is suitable method for determining body fat percent in active men and it could be a good replacement for the expensive hydrostatic method.