Dr Sepideh Jafariyan, Dr Amirabbas Monazzami, Dr Tuoraj Ahmadijouybari, Dr Kheirollah Yari Khalilani,
Volume 0, Issue 0 (11-2019)
Abstract
Abstract
Background: Metabolic dysfunction-associated fatty liver disease (MAFLD) is the most prevalent chronic liver disorder. Aerobic exercise is a key non-pharmacological strategy for MAFLD management, yet the impact of different training intensities remains unclear. This study investigated the effects of eight weeks of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on non-invasive liver indices, body composition, and metabolic markers in middle-aged women with MAFLD.
Methods: In this clinical trial, 41 women with MAFLD (41.39 ± 6.16 years; BMI: 32.14 ± 3.36 kg/m²) were randomly assigned to HIIT, MICT, or control groups. MICT involved 30–45 minutes at 60–70% heart rate reserve, while HIIT included 4–6 bouts of 30 seconds at 50–100–110% of maximal aerobic speed. Body composition (weight, BMI, BAI, ABSI), steatosis (HSI, FSI, LFS), fibrosis (NFS, NRS, FIB-4, FIB-5, APRI), and metabolic indices (LAP, CMI) were measured before and after the intervention. Statistical analyses included paired t-tests, one-way ANOVA, and GLMRM (p < 0.05).
Results: Both HIIT and MICT significantly reduced weight, BMI, BAI, and LFS. ABSI increased in control. HSI decreased following HIIT, while FSI decreased after MICT. Among fibrosis indices, only FIB-5 showed a significant reduction in MICT compared to HIIT, and NRS decreased in MICT compared to control. LAP decreased in both training groups relative to control, whereas CMI decreased only in MICT.
Conclusion: Although MICT demonstrated superiority in certain parameters, HIIT elicited comparable effects in a shorter duration and may represent an efficient strategy for the clinical management of MAFLD.
V Saleh, H Sadeghi, P Shams Najafabadi, M.r Rezaeian, H Valizadeh,
Volume 15, Issue 13 (9-2017)
Abstract
The aim of this study was to compare the profile of anthropometric, somatotype and body composition between novice and professional 6 to 8 years old gymnasts. A total of 40 gymnasts in tow group (20 novice gymnasts and 20 professional gymnasts) participated in this study. A total of 17 anthropometric, somatotype and body composition variables were recorded of each subject. The tools used in this study are: questionnaires (individual information and general health evaluation), chronometer, band meter, and movable weight scale, stadiometer, sliding calliper and somatotype software. In ferential and descriptive statistics and independent T test were used to analyze the obtained data. The level of significance was 0.05. There were significant differences in skinfold percentage (triceps, Supraspinatus and calf), total hand length, hip and calf, circumferences, BMI, endomorph and ectomorph between tow group) p<0.05). From an anthropometric stand point, 6 to 8 years old is a lowest and best age for select and talent identification. According to the results, between two groups, professional gymnasts exhibited lower BMI, circumferences (hip and calf), skinfolds, endomorphy and more total hand length, mesomorphy and ectomorphy than nivice gymnasts. On average, professional and novice gymnasts were in ectomorph-mesomorph and endomorph-mesomorph status respectively.
Mr Kourosh Dehghan, Dr Khosro Jalali Dehkodi, Dr Farzaneh Taghian, Dr Mehdi Kargarfard, Dr Bahram Abedi,
Volume 21, Issue 25 (9-2023)
Abstract
Osteoporosis is the most common metabolic bone disease, and various factors such as low body mass index and lack of physical activity are involved in the occurrence of this disease. The aim of this study was to evaluate the effect of circular resistance exercises, whole body vibration and their combination on 25-hydroxyvitamin D, bone mineral density and functional factors in elderly people with osteoporosis. In a randomized controlled experiment with a pre-test-post-test design, 60 elderly men with osteoporosis with an age range of 65-78 years were randomly divided into four exercise groups: Circular resistance training (CRT, n=15), whole body vibration training (WBVT, n=15), combined (CRT + WBVT, n=15), and control (n=15). CRT with an intensity of 30 to 60% of the maximum repetition strength (1RM) was performed 3 times a week for 12 weeks. WBVT were performed in the form of 10 combined lower body and upper body movements with a frequency intensity between 25 to 45 Hz, an amplitude of 5 to 8 mm, and a time of each movement of 60 to 100 seconds, While the control group maintained their usual lifestyle. Body composition variables include; Fat-free weight (LBM), soft tissue weight (SLM) and skeletal muscle weight (SMM) using Body Composition Analyzer, bone density measurement using DEXA test and 25-hydroxyvitamin D3 before and after the last training sessions. Data analysis was done by using paired sample t-test and analyze of covariance (ANCOVA) at a level less than 0.05. After 12 weeks of intervention, a significant improvement in BMD, balance, coordination, muscle strength, lean weight and skeletal muscle weight was observed after CRT and CRT + WBVT exercises in comparison with the control group. However, no significant differences were observed between the groups in the variables of weight, body mass index, lean weight, soft tissue weight, skeletal muscle weight (SMM), BMD, balance, hydroxyvitamin D3 (p> 0.05). The findings of the current research show that performing CRT, WBVT and CRT + WBV exercises as a non-pharmacological treatment method can cause a significant increase in bone density and functional indicators of elderly men and has no effect on the hormonal indicators of elderly men with osteoporosis. Further studies with long-term follow-up should be considered to confirm these findings.
