Showing 4 results for Body Composition
Seyed Javad Mirghani, Mohammad Ali Azarbayjani , Maghsoud Peeri,
Volume 12, Issue 6 (11-2018)
Abstract
ABSTRACT
Background and Objectives: Obesity is a global health problem that could lead to cardiovascular disease, diabetes and cancer. Polygenic obesity is caused by multiple factors, such as lack of exercise and excess food intake. In this study, we evaluated effects of 12 weeks of high-intensity interval training (HIIT) and isocratic moderate-intensity training (MIT) on anthropometric indices and insulin resistance in rats fed with a high-fat diet (HFD).
Methods: Twenty-five male Wistar rats (mean age of 5-6 weeks) were divided into three groups: control group (HFD, N=5), HFD+ MIT (N=10) and HFD+ HIIT (N = 10). After placing the subjects on a HFD for 13 weeks, the exercise groups performed trainings for 12 weeks.
Results: Body mass index and Lee index decreased significantly in both training groups (P≤0.05). There was no significant difference in insulin resistance between the three groups (P>0.05).
Conclusion: Based on the results, it can be concluded that HIIT is more effective than MIT in reducing some of the obesity markers in obese rats fed with a HFD. However, this type of training has no significant impact on insulin resistance.
Keywords: Obesity, High Intensity Interval Training, High-Fat Diet, Body composition Indexes.
Farnaz Aminian, Mahmood Hejazi, Sadegh Cheragh Birjandi,
Volume 14, Issue 5 (9-2020)
Abstract
Background and objectives: Evidence suggests that decrease in the serum concentration of myostatin (MSTN) may reduce age-related decrement in muscle mass, especially in older individuals. This study aimed at investigating the effects of 12 weeks of resistance training with and without blood flow restriction on MSTN and muscular strength (MS) of elderly women.
Methods: Thirty elderly women were randomly assigned into three groups of resistance training with blood flow restriction (n=10), resistance training without blood flow restriction (n=10) and control (n=10). The resistance training intervention was carried out three sessions a week for 12 weeks. Body composition, MS and serum concentrations MSTN were assessed at baseline and 48-36 hours after the last training session.
Results: There was a significant time × group difference in MS following 12 weeks of exercise intervention (P=0.001). However, there was no significant group and time × group difference in MSTN concentrations (P=0.2).
Conclusion: Low intensity BFRT does not decrease MSTN concentrations in elderly women. However, low intensity BFRT can increase MS values in these individuals.
Leila Esazadeh, Rambod Khajeie, Alireza Hosseinikakhk,
Volume 14, Issue 6 (11-2020)
Abstract
Background and objectives: It has been suggested that concurrent training (CT) improves both health and performance during aging. However, possible effects of CT order have not been evaluated in menopausal women. Therefore, the aim of this study was to evaluate effects of CT order on follistatin, physical fitness factors and functional capacity of postmenopausal women.
Methods: In this semi-experimental study, 33 healthy, sedentary, postmenopausal women were divided into three groups of endurance training-resistance training (ET+RT; n=11), resistance training-endurance training (RT+ET; n=10) and control (C; n= 12). The training exercises were performed three times a week for eight weeks.
Results: Weight and body fat percentage did not differ significantly between the groups (P>0.05). Muscular strength, endurance and aerobic capacity increased significantly in both training groups (P<0.05). However, there was no significant difference between the effects of the training orders. There was a significant time × group interaction regarding the follistatin levels after the CT intervention. However, there was no significant difference in the follistatin levels between the groups.
Conclusion: Based on the results, the order of eight weeks of CT training does not significantly affect body fat percentage, physical fitness factors and functional capacity of postmenopausal women. However, the percentage changes in the mentioned variables are higher in the ET+RT exercise order.
Fatemeh Khodadadi, Seyed Reza Attarzadeh Hosseini, Mohammad Mosaferi,
Volume 16, Issue 2 (3-2022)
Abstract
Background and objectives: Previous investigations have shown that physical activity can improve insulin sensitivity and body composition by reducing the concentration of inflammatory biomarkers. The study aimed at evaluating effects of eight weeks of resistance training and high-intensity interval training on adropin, blood glucose markers, and body composition in overweight females.
Methods: sixteen overweight females (mean age: 30 ± 4.3 years and body mass index= 29 ± 2.6 kg/m2) were randomly assigned to a resistance training group (n=8) and a high-intensity interval training group (n=8). Participants in both groups trained three times a week for eight weeks. Body composition and serum level of blood markers were determined at baseline and after the last training session.
Results: Body mass, body fat percentage, and waist-hip ratio decreased significantly in both groups (p<0.05). VO2max significantly increased in both groups, while the changes in the resistance training group were greater than in the high-intensity interval training group (p<0.05). Insulin and HOMA-IR concentrations decreased significantly in the resistance training group (p<0.05).
Conclusion: Eight weeks of both training procedures could significantly decrease body composition markers. However, the training duration was not sufficient to alter fating blood sugar or adropin concentrations.
