Hadi Yarahmadi; AmirHossein Haghighi; Mohammadreza Hamedinai; Mehdi Zaree
Volume 19, Issue 4 , January and February 2013, , Pages 371-381
Abstract
Background: The aim of this study was to Survey of relationship physical activity level and sedentary behaviors with diet patterns among 12-14 year-old adolescent boys in Sabzevar. Materials and methods: This cross-sectional study was performed on 650 boy students aged 12-14 years in Sabzevar that were ...
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Background: The aim of this study was to Survey of relationship physical activity level and sedentary behaviors with diet patterns among 12-14 year-old adolescent boys in Sabzevar. Materials and methods: This cross-sectional study was performed on 650 boy students aged 12-14 years in Sabzevar that were selected via classified random Sampling. Physical activity levels were assessed by the Physical Activity Questionnaire for Older Children (PAQ-C). Energy intake and Macronutrient were assessed by means of a semi-quantitative food frequency questionnaire (FFQ). Sedentary behaviors of subjects assessed by means of a made-researcher questionnaire by researcher. Data were analyzed by SPSS version 13 software using Spearman and Pearson's correlation coefficient and ANOVA test. Result: There was no significant correlation between physical activity level and energy intake and macronutrient. In total subjects there was no significant difference in the reported energy intake and macronutrient between physical activity levels. But, in 12 year-old subjects, energy intake, Total fat, Protein and Carbohydrates in low physical activity level subjects were significantly higher than moderate physical activity level subjects. There was significant positive correlation between physical activity level and Number of breakfast Consumption per week. There was no statistically significant correlation between the reported Energy intake and Macronutrient with sedentary behaviors. Conclusion: There was no significant difference in the reported Energy intake and Macronutrient between physical activity levels among 12-14 year-old students. But, energy intake and macronutrient in low physical activity level subjects were somewhat higher than active subjects. Therefore, the results suggest that nutrition education regarding balanced diet and optimum physical activity is required for children's health and growth.
Mitra Khademosharie; Mohammadreza Hamedinia; Teyebeh Amiri Parsa; Seyed Alireza Hosseini Kakh
Volume 18, Issue 4 , January and February 2012, , Pages 260-271
Abstract
Background and Purpose: Leptin is one of the most important proteins involved in lipid metabolism and energy homeostasis but the effect of acute exercise on leptin has been less investigated. The purpose of the present study was to investigate the effect of a one-session exercise on tissue concentration ...
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Background and Purpose: Leptin is one of the most important proteins involved in lipid metabolism and energy homeostasis but the effect of acute exercise on leptin has been less investigated. The purpose of the present study was to investigate the effect of a one-session exercise on tissue concentration and gene expression of leptin in rats.
Methods and Materials: In this experimental study، 24 male Wistar rats were housed in a standard environment، and were randomly divided into two groups (Control and Experimental). The exercise was running on a treadmill for 120 min (18 m/min). Immediately، 2 and 24 hours after exercise the rats anesthetized، blood، fat tissue and soleus were taken. Leptin concentration in the muscular، fat and blood were measured. Also، leptin gene expression was investigated with RT-PCR in tissues. Data were analyzed in SPSS 16 using repeated measures ANOVA (P0.05).
Conclusion: Acute exercise can increase leptin gene expression in muscle and fat tissues. However، exercise with longer duration and higher volume may appear to be more effective.
Mohammad Reza Hamedinia; Teyyebh Amiri Parsa; Marziyeh Saadat Azarnive; Seyyed Ali Reza Hosseini Kakhk
Volume 18, Issue 3 , September and October 2011, , Pages 188-197
Abstract
Background and Purpose: Obesity is associated with various metabolic and inflammatory impairments، the effects of which have not been sufficiently studied. Therefore، the purpose of this study was to examine the influence of an 8-week strength training and aerobic training program and a 10-day detraining ...
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Background and Purpose: Obesity is associated with various metabolic and inflammatory impairments، the effects of which have not been sufficiently studied. Therefore، the purpose of this study was to examine the influence of an 8-week strength training and aerobic training program and a 10-day detraining on lipid profile and CRP in obese girls. Methods and Materials: In this experimental study، thirty-six obese female university students were voluntarily recruited and randomly assigned into three groups: control (n=11)، aerobic training or AT (n=12) and strength training or ST (n=13). ST and AT groups trained for 8 weeks، 4 times/week، 60 min/session، with 60 to 70% of 1 repetition maximum for ST، and 65 to 75% of HRmax for AT. Blood samples were taken at baseline، 24 hours after the last exercise session and after 10 days of detraining on fasting state. Data were analyzed in SPSS 16 using repeated measure analysis of variance (RM-ANOVA). The alpha level was established at P0.05). Also، no significant differences were found between the three groups (P>0.05). TC also decreased in AT and ST groups (9% and 19%، respectively); however، the change was not significant (P>0.05). After training no significant changes in HDL، HDL2، HDL3، LDL، and CRP were observed (P>0.05). Ten days of detraining also did not result in any significant alterations in the lipid profile or CRP (P>0.05). Conclusion: Eight weeks of aerobic and strength training have no significant effect on the lipid profile and CRP in obese girls.
Mohammad Safari; MohammadReza Hamedinia; Seyyed Ali Reza Hosseini Kakhk
Volume 18, Issue 1 , March and April 2011, , Pages 55-66
Abstract
Background and Purpose: Human health largely depends on health-related physical fitness status، particularly overweight and under weight. In this regard، the adolescence is a unique life span. However، the information about adolescent's physical fitness is limited. Therefore، the purpose of this ...
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Background and Purpose: Human health largely depends on health-related physical fitness status، particularly overweight and under weight. In this regard، the adolescence is a unique life span. However، the information about adolescent's physical fitness is limited. Therefore، the purpose of this study was the investigation of health-related physical fitness elements with an emphasis on overweight and underweight in male adolescents in Sabzevar، Iran.
Materials and methods: In the cross sectional descriptive and analytical study، the study population consisted of schoolboy students with the age of 12-14 years old in Sabzevar، Iran. Based on sample size calculation formula، a number of 368 schoolboys of 12-14 years-old were selected based on randomized cluster sampling. After medical examinations and filling out the written informed consent forms، anthropometric factors and physical fitness were assessed (height، weight، aerobic fitness with 20-meter shuttle run، strength via dynamometer، explosive power via Sergeant jump، flexibility via flexibility box، agility via Illinois test، and body Composition via skin-fold fat caliper and subcutaneous fat thickness). The obtained data were analyzed using SPSS 11.5 using central tendency، dispersion and Pearson Correlation coefficient (P
Seyyed AliReza Hosseini Kakhk; Hadi Yarahmadi; MohammadReza Hamedinia; AmirHossein Haghighi
Volume 17, Issue 2 , July and August 2010, , Pages 108-115
Abstract
Background and Purpose: Appetite is one of the factors affecting the energy intake equation and has different control and regulatory levels. One of the probable factors affecting it is physical activity. The purpose of the present study was to examine the effects of moderate and heavy resistance exercise ...
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Background and Purpose: Appetite is one of the factors affecting the energy intake equation and has different control and regulatory levels. One of the probable factors affecting it is physical activity. The purpose of the present study was to examine the effects of moderate and heavy resistance exercise on appetite, glucose, glycerol and lactate of the serum in healthy men. Methods and Materials: In this experimental study, out of the university employees, 13 male volunteers were recruited for the study by their own written informed consent, and were assigned into three modes of control, moderate resistance exercise (with intensity of 70% of 1RM) and heavy resistance exercise (with intensity of 80% of 1RM) groups. The process consisted of 8 different movements arranged in 3 sets with 10 repetitions within 90 minutes. The participants' appetite parameter was recorded by appetite questionnaire before collecting blood samples. Data was analyzed using repeated measures ANOVA in SPSS 13 at a significance level of P
MR HAMEDI NIA; AH HAGHIGHI; P JAMILI
Volume 13, Issue 4 , January and February 2007, , Pages 204-210
Abstract
Background and purpose: C-reactive protein is a sensitive, nonspecific marker of inflammation and its relationship with coronary vascular disease is already established. The present research was conducted to study the effect of resistance training on the rate of C-reactive protein in obese men.
Methods ...
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Background and purpose: C-reactive protein is a sensitive, nonspecific marker of inflammation and its relationship with coronary vascular disease is already established. The present research was conducted to study the effect of resistance training on the rate of C-reactive protein in obese men.
Methods and Materials: The present study was quasi-experimental and 24 male subjects (16 obese, 8 lean) with age range of 35 to 48 years voluntarily participated in the study. Obese men were randomly assigned into two groups: resistance training and control group. The third group included the lean men subjects. Fasting blood samples were taken from all subjects. The experimental subjects received resistance training for 13 weeks, 3 sessions per week. The resistance training was done in circuit fashion in 11 stations with a 50 to 60% intensity of one maximum repetition (IRM).
Results: Resistance training significantly decreased the serum CRP levels of the obese men (from 1.65±0.6 to 0.53±0.73). In addition, serum CRP concentrations in obese men at baseline state were significantly higher than those in lean men (1.56±0.58 versus 0.26±0.21). In all subjects there was a significant and positive correlation between serum CRP levels and obesity markers (r=0.75) and different components of the metabolic syndrome.
Conclusion: Resistance training due to antinflammatory effects is likely to reduce the risk of future cardiovascular events in obese men.
MR HAMEDINIA; R ASKARI
Volume 12, Issue 3 , September and October 2005, , Pages 22-27
Abstract
Purpose: Many researches have been conducted on the relationship between exercise and immune system but few have focused on the effect of physical fitness programs on the system. Therefore, this study was carried out to investigate the influence of a 12-week program on such markers as IgG, neutrophils, ...
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Purpose: Many researches have been conducted on the relationship between exercise and immune system but few have focused on the effect of physical fitness programs on the system. Therefore, this study was carried out to investigate the influence of a 12-week program on such markers as IgG, neutrophils, lymphocytes and serum cortisol at rest in athletic students.
Method and Materials: In this study, 11 athletic students (age 22.02±2 years, weight 61.2±5.3 Kg and stature 174±4.45 cm) voluntarily participated as the experimental group and 11 nonathletic students (age 22.5±2.5 years, weight 62.1±6.2 Kg and stature 173±3.5 cm) voluntarily participated as the control group. Blood samples were collected at rest from athletic students before physical fitness training. The program included resistance, speed and endurance training with intensity 65–100% maximal HR. After 12 weeks, blood samples were collected from both groups.
Results: Dependent and independent t-test analysis indicated that physical fitness training did not significantly change serum IgG and cortisol at rest (p>0.81 and p>0.65 respectively). It significantly decreased neutrophils and increased lymphocytes (p
MR HAMEDI NIA; S REZAEI
Volume 11, Issue 3 , September and October 2004, , Pages 34-40
Abstract
This Study is intended to study the relationship of physical activity and body fat percentage with some cardiovascular risk factors in faculty members of Sabzevar Teacher Training University in Sabzevar, Iran. For the purposes of the study, 50 male faculty members , with the age of 37 ± 5.7 years, height ...
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This Study is intended to study the relationship of physical activity and body fat percentage with some cardiovascular risk factors in faculty members of Sabzevar Teacher Training University in Sabzevar, Iran. For the purposes of the study, 50 male faculty members , with the age of 37 ± 5.7 years, height of 169 ± 6.9 cm and weight of 76 ± 13 Kg were non-randomly selected; they were 50% of the whole population. Cardiovascular risk factors studied included systolic and diastolic blood pressure, plasma glucose, cholesterole, TG, HDL-C, LDL-C, VLDL and HDL-C/cholestrole ratio. Data analysis using Pearson and Spearman correlation coefficients revealed significant relationships between body fat percentage and plasma cholestrole, TG, VLDL, HDL-C/cholestrole ratio, BMI and physical activity. However, no significant correlation was observed with plasma glucose, HDL-C, and LDL-C, physical activity showed a significant relationship only with body fat percentage and no such relationship with other cardiovascular risk factors. In general, it is concluded that in the subjects of our study, body fat percentage correlates with cardiovascular risk factors more than physical activity does.