oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2017 ( 62 )

2016 ( 74 )

2015 ( 757 )

2014 ( 1025 )

自定义范围…

匹配条件: “Mansournia MA” ,找到相关结果约26660条。
列表显示的所有文章,均可免费获取
第1页/共26660条
每页显示
Long term effects of a continuous and intermittent aerobic exercise on weight changes and body fat percentage in overweight and obese women
Alizadeh Z,Younespour Sh,Mansournia MA
Tehran University Medical Journal , 2013,
Abstract: Background: Obesity and sedentary lifestyle are growing problem. The global community's concern is to find the best strategy to obtain a more efficient process of weight reduction, increase physical activity, and minimize weight regain level. The purpose of this study was to evaluate the long-term effects of a short-term intervention on weight changes.Methods: The present study is a one-year follow-up study of a 12-week intervention during which the 15 individuals in the intermittent group performed 40 minutes exercise in three bouts per day; however, the 15 participants of the continuous group did the same but 40 minutes continuously. The 15 participants in the control group had no exercise prescription. After one year, weight changes, body fat percentage, and BMI were re-evaluated in the groups.Results: After adjusting the baseline weight, patterns of change in the mean weights from the end of the third month to the twelfth month were different across groups (P=0.02). After significant weight loss in the intermittent group, the mean weight in this group increased by 2.32 kilograms during the period, although not statistically significant. No increase was observed in the control group’s mean weight (P=1.00). In the continuous group, the mean weight increased statistically (P=0.048, 3.63 kilograms).Conclusion: It seems that long-term effects of moderate intensity intermittent aerobic exercise in overweight and obese women on weight control are more efficient than those of continuous exercise. However, for a change in lifestyle and prevention of weight regain, longer follow-ups are required.
Residential Segregation and Infant Mortality: A Multilevel Study Using Iranian Census Data
SS Hashemi Nazari,M Mahmoodi,MA Mansournia,K Holakouie Naieni
Iranian Journal of Public Health , 2012,
Abstract: Background: There is a great amount of literature concerning the effect of racial segregation on health outcomes but few papers have discussed the effect of segregation on the basis of social, demographic and economic characteristics on health. We estimated the independent effect of segregation of determinants of socioeconomic status on infant mortality in Iranian population.Methods: For measuring segregation, we used generalized dissimilarity index for two group and multi group nominal variables and ordinal information theory index for ordinal variables. Sample data was obtained from Iranian latest national census and multilevel modeling with individual variables at level one and segregation indices measured at province level for socioeconomic status variables at level two were used to assess the effect of segregation on infant mortality.Results: Among individual factors, mother activity was a risk factor for infant mortality. Segregated provinces in regard to size of the house, ownership of a house and motorcycle, number of literate individual in the family and use of natural gas for cooking and heating had higher infant mortality. Segregation indices measured for education level, migration history, activity, marital status and existence of bathroom were negatively associated with infant mortality.Conclusion: Segregation of different contextual characteristics of neighborhood had different effects on health outcomes. Studying segregation of social, economic, and demographic factors, especially in communities, which are racially homogenous, might reveal new insights into dissimilarities in health.
The effects of continuous and intermittent aerobic exercise on lipid profile and fasting blood sugar in women with a body mass index more than 25 kg/m2: a randomized controlled trial
Alizadeh Z,Kordi R,Hossein-Zadeh Attar MJ,Mansournia MA
Tehran University Medical Journal , 2011,
Abstract: "n 800x600 Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Background: Obesity is a major health problem all around the world. On the other hand, few people, especially women, are physically active to the levels recommended by Healthy People 2010 web site managed by the U.S. Department of Health and Human Services. The objective of this study was to compare the potential effects of intermittent and continuous exercise programs combined with concurrent calorie restriction diets on lipid profile and fasting blood sugar in overweight and obese females."n"nMethods : Forty-five women with a sedentary life style and a BMI greater than 25 kg/m2, were randomly assigned to one of the three groups (15 subjects in each group): a) 40 minutes of medium-intensity intermittent exercise (64-76% of maximal heart rate), 3 bouts per day for 5 days a week, b) a single bout of a 40-minute continuous exercise per day for 5 days a week, C) the non-exercising control group. A self-monitored calorie restricted diet was recommended to all participants by a dietitian. The lipid profile, fasting blood sugar and blood pressure of all participants were assessed at baseline and 12 weeks after the intervention period."n"nResults : After the intervention, there were no significant differences among the groups in terms of lipid profile [cholesterol (P=0.94), triglyceride (P=0.62)] fasting blood sugar (P=0.054), systolic blood pressure (P=0.84) or diastolic blood pressure (P=0.30)."n"nConclusion: There seems to be no significant differences between short term continuous and intermittent aerobic exercise programs in improving lipid profile, fasting blood sugar or blood pressure both in overweight and obese women.
An Analysis of Spontaneous Deletion Site in RNA2 of a New Variant of Soil-borne wheat mosaic virus Systemically Infects Plants at High Temperatures
M.R. Mansournia
Asian Journal of Plant Sciences , 2008,
Abstract: Experiments were conducted to analyze the occurrence of deletion mutation in RNA2 of new variants of Soil-borne wheat mosaic virus (SBWMV) Japanese strain-JT isolate, which have the ability of replication and systemic infection of plants at higher temperature of 25 °C. Barley plants infected by SBWMV were grown in a growth cabinet of 17 °C for 1 month, followed by shifting temperature to 22 °C and finally to 25 °C, each for 1 month, respectively. New variants emerged with the ability of systemic infection of barley plants at 25 °C and spontaneous deletion mutation occurred in RNA2 by retaining same nucleotide positions of 5` and 3` terminal region of RT gene among individual plants. C-terminal region of RT protein which had already been shown to be restored in-frame, was truncated after out-frame deletion of RT gene leading to a stop codon (TGA, nt2497-2499) suggesting that C-terminal region of RT protein is not necessarily translated after deletion of nucleotide positions 867-2445 downstream of the capsid protein gene. The virus maintains 3`-terminal of RT gene due to act as a promoter for transcription of p19 subgenomic RNA, which is required for systemic infection of plants.
An Analysis of Anger in Adolescent Girls Who Practice the Martial Arts
Sara Lotfian,Vahid Ziaee,Homayoun Amini,Mohammad-Ali Mansournia
International Journal of Pediatrics , 2011, DOI: 10.1155/2011/630604
Abstract: The effect of martial arts on adolescents' behavior, especially aggression, is controversial. The aim of this study was to assess and compare anger ratings among adolescent girl athletes of different martial arts. 291 female adolescents between the ages of 11 and 19 were assessed according to the Adolescent Anger Rating Scale designed by DM Burney. In the case group, the martial arts practiced were either judo (=70) or karate (=66), while the control group was composed of swimmers (=59) and nonathletes (=96). Total anger scores showed statistically significant differences between the groups (=0.001) decreasing from girls who practiced judo to nonathletes, karate, and swimmers. Instrumental and reactive anger subscales also showed significant differences between the groups, but this difference was not found for anger control. As a conclusion, the anger rate did not differ between judoka and nonathletes, but that both of these groups received higher scores in total anger than karateka and swimmers.
Anger in Adolescent Boy Athletes: a Comparison Among Judo, Karate, Swimming and Non Athletes
Vahid Ziaee,Sara Lotfian,Homayoun Amini,Mohammad-Ali Mansournia
Iranian Journal of Pediatrics , 2012,
Abstract: Objective: Karate and judo are originally Japanese martial arts which may have different influences on adolescents’ behavior. This study was conducted to examine the total anger rate and its subscale-reactive anger, instrumental anger, and anger control-rates in young karateka and judoka.Methods: A cross-sectional study was carried out in 11 to 19-year old boys. Adolescents included in the study were judoka (n=70), karateka (n=66), swimmers (n=59), and non athletes (n=96). One stage cluster sampling method was used to select judoka, karateka, and swimmers from sport clubs in Tehran. Students of governmental schools at the same area were chosen as the non-athletes group. The “Adolescent Anger Rating Scale” questionnaire was utilized to assess the anger rate.Findings: The mean age of participants was 12.90(±2.06) years. The total anger rates were 45.40 (±5.61) in judoka, 41.53(±5.63) in karateka, 41.19(±5.33) in swimmers, and 45.44 (±8.58) in non athletes. In total anger scale karateka and swimmers had a significantly lower score compared to judoka and non athletes. In instrumental anger subscale the difference was significant just between karateka and non athletes. In reactive anger subscale judoka showed higher scores than swimmers. In anger control subscale the difference was significant between judoka and swimmers and also judoka and karateka. The difference of anger control between karateka and non athletes was significant.Conclusion: The findings of this study propose a difference in the anger rate between judoka and karateka. In contrary to the results of previous studies, judo training may have no influence on anger control, while karate training could be beneficial.
Hemodynamic Changes After Static and Dynamic Exercises and Treadmill Stress Test; Different Patterns in Patients with Primary Benign Exertional Headache?
Ramin Kordi,Reza Mazaheri,Mohsen Rostami,Mohammad Ali Mansournia
Acta Medica Iranica , 2012,
Abstract: The pathophysiology of primary benign exertional headache (EH) is not still clearly defined. Some researchers have suggested an impaired vascular response as the etiology of this disorder. In this study we investigated whether there are any differences in blood pressure (BP) and heart rate (HR) of the subjects in course of the static and dynamic exercises and the treadmill stress test between those with and without EH. From university students, 22 patients with EH (mean age: 19.8 ± 2.10, Female to Male: 7:15) and 20 normal subjects (mean age: 19.3 ± 1.97, Female: Male: 8:12) were recruited. All the subjects performed the static and dynamic exercises at 30 and 20 percent of the maximal voluntary contraction (MVC) and Bruce treadmill stress test according to the standard protocols. HR and BP of all the cases at the baseline and during and immediately after each test were measured. No significant difference was found between the mean rise of HR, systolic and diastolic BP of the subjects with and without EH in static and dynamic exercises and also treadmill stress test. It seems that between those with and without EH, there is no significant difference in rise of HR and BP response to static and dynamic exercises and treadmill stress test. Further studies are required to find the pathophysiology and risk factors of EH.
The Effect of Path and Beginning Time of Ascending on Incidence of Acute Mountain Sickness around Mount Damavand in Iran (5671?m)
Reza Alizadeh,Vahid Ziaee,Lotf-Ali Frooghifard,Mohammad-Ali Mansournia,Ziba Aghsaeifard
Neurology Research International , 2012, DOI: 10.1155/2012/428296
Abstract: Background. This study was designed to evaluate the incidence of acute mountain sickness (AMS) occurring on different climbing routes on Mount Damavand and the effect of beginning time of ascent in Iranian trekkers. Methods. This study was a descriptive cohort investigation, performed in summer 2007. All trekkers who ascended Mount Damavand from northern, western, eastern, and southern paths and passed 4200?m altitude were included in the study. Two questionnaires were completed for each trekker (personal information and Lake Louise score questionnaire). Multiple logistic regression analysis was used to explore the independent predicting variables for AMS. Results. Overall incidence rate of AMS was 53.6%. This rate was the highest in south route (61.5%) ( ). There was no difference in the incidence of AMS on other paths. AMS history, AMS history on Damavand, the beginning time of climbing, sleeping at 4200?m altitude, and home altitude had significant effect on AMS incidence, but by multiple logistic regression analysis south route and AMS history on Mount Damavand had positive effect on incidence of AMS ( and ). Conclusion. The path and the beginning time of ascent can affect incidence of AMS. The risk of occurrence of AMS was 1.9 times as large for trekkers who ascended from southern route. 1. Introduction Acute mountain sickness (AMS) is a disorder which is seen in ascent to altitudes higher than 3000 meters. It is a clinical syndrome with headache and one or more other symptoms including gastrointestinal symptoms (poor appetite, nausea, vomiting), fatigue and/or weakness, dizziness/lightheadedness, and sleep disturbances [1, 2]. Its diagnosis is based on environmental symptom questionnaires, Hackett or Lake Louise AMS score [3, 4]. Several studies in different countries have been done so far, and incidence rates have been reported from 25% to 69% [2, 5–11]. Some effective factors have been considered in several studies, such as change of altitude related to residence altitude [3, 5, 11], speed of mountain climbing [1, 2, 11], very low and very high range of ages [5, 12], positive history of mountain sickness [8, 11], beginning mountain climbing at night [11], sleep in altitudes more than 3 hours in altitude [1], and water and fluid intake [13]. However, the relation of some factors like age and gender to the incidence of the disease is in doubt. Mount Damavand has four main paths for mountaineers’ ascent. In our previous study, the incidence rate of disease was seen in more than 60% of mountaineers who ascend from the south [11]. Iranian expert
The Effect of Aquatic and Land Plyometric Training on Physical Performance and Muscular Enzymes in Male Wrestlers
Mohammad Yaser Shiran,Mohammad Reza Kordi,Vahid Ziaee,Ali-Asghar Ravasi,Mohammad Ali Mansournia
Research Journal of Biological Sciences , 2012,
Abstract: The purpose of this investigation was to compare Aquatic and Land plyometric training on performance and muscular injury in club wrestlers. For this reason 21 club wrestlers were selected voluntary and divided to two exprimental groups ( Land plyometric training (n = 7) Aquatic plyometric training ( n= 7)) and control group (n = 7) randomly. The mean (standard deviation) of age was 20.3 (3.6), height 169 (5.3), weight 65.3 (8.8). Exprimental groups trained four main skills of plyometric training including depth, star, rocket and squat jumps for five weeks and 3 times per week and 40 to 45 min in per session and control groups had their routine training. For determination the effects of plyometric training were measured strength, speed, agility, Fatigue index, peak and mean power and to evaluate Pathogenesis of these training inflammatory enzymes including CK, LDH were measured. The analyzing of data by ANOVA and T test showed: There was no significant difference between 2 model of plyometric training (Aquatic and Land) in performance and risk of muscle injury in male club wrestlers. Aquatic plyometrics provided the same performance enhancement benefits as land plyometrics with less muscle soreness.
The Effects of a 10-Week Water Aerobic Exercise on the Resting Blood Pressure in Patients with Essential Hypertension
Ali Vasheghani Farahani,Mohammad-Ali Mansournia,Hossein Asheri,Akbar Fotouhi
Asian journal of Sports Medicine , 2010,
Abstract: Purpose: To investigate the effects of a 10-week water aerobic exercise on the resting blood pressure in patients with stage 1 or 2 hypertension referring to Tehran University Clinics. Methods: Forty men with stage 1 or 2 essential hypertension were assigned to two groups of intervention [n=12; aged 48.33 ± 10.74 years (mean ± SD)] and control [n=28; aged 46.96 ± 11.58 years (mean ± SD)]. Subjects in the intervention group participated in a supervised 10-week water aerobic training program of 55 min sessions, 3 days per week on alternate days, while those in the control group were not involved in any regular training program during this period. Blood pressure of the participants was recorded and compared at the beginning and at the end of the study (48 hours after the last training session). Results: Exercise lowered systolic blood pressure and mean arterial pressure by 11.71 (95% confidence interval: 5.07 to 18.35) and 5.90 (95% confidence interval: 1.17 to 10.63) mm Hg respectively. The lowering effect of exercise on diastolic blood pressure was neither statistically significant nor clinically important (0.55 mm Hg; P. value = 0.8). There was no significant effect of age, baseline body mass index and stage of hypertension on the exercise-induced changes in blood pressure. Conclusion: A 10-week course of water aerobic exercise markedly reduced the systolic and mean arterial blood pressure of patients with essential hypertension and is especially recommended for the obese and the elderly who have orthopedic problems or bronchospasm.
第1页/共26660条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.