Corresponding Author: Email: [email protected], Tel: 09137227732
The Effect of Rest Intervals between Sets of Resistance
Exercise on Plasma Antioxidant Capacity Changes and Cell Injury Index
Kamal Azizbeigi1 – Sirvan Atashak2
1. Assistant Professor of Exercise Physiology, Department of Physical Education and Sports Sciences, Islamic Azad University, Sanandaj
Branch, Sanandaj, Iran 2 Assistant Professor of Exercise Physiology,
Department of Physical Education and Sports Sciences, Islamic Azad
University, Mahabad Branch, Mahabad, Iran (Received: 2013/3/12,Accepted: 2014/1/7)
Abstract
The aim of this study was to determine the effect of rest intervals between two resistance exercise protocols (with similar volume and intensity) on plasma antioxidant capacity (TAC) and creatine kinase (CK). For this purpose, 20 untrained subjects voluntarily participated in the research and randomly assigned to one of the two resistance exercise groups with 2minute rest interval and 4-minute rest interval. Resistance exercise was performed in four sets of six repetitions maximum (6RM). Blood samples were collected before the exercise, immediately after the exercise, 6, 24 and 48 hours after the exercise. The results indicated that both resistance exercises with different rest intervals significantly changed plasma antioxidant capacity and creatine kinase (P”0.05). However, there was no significant difference in the TAC and CK between the groups during the study (P>0.05). Generally, it can be said that rest intervals between resistance exercises cannot have an effect on redox changes and cellular damage, but the intensity of exercise was more important.

Keywords:
antioxidant capacity, cell injury index, resistance exercise.

Corresponding Author: Email: [email protected], Tel: 09183809548
The Effect of an Aerobic Exercise Program with Two Different Volumes on Some Risk Factors of
Cardiovascular Diseases in Mentally Retarded Girls
Amir Hossein Haghighi*1 – Nasrin Gelardi2- Mohmmad Reza Hamedi Nia3
1.Associate Professor of Exercise Physiology, Faculty of Physical
Education and Sport Sciences, Hakim Sabzevari University, Sabzevar,
Iran,MSc of Exercise Physiology, Faculty of Physical Education and Sport
Sciences, Hakim Sabzevari University, Sabzevar, Iran,Professor of
Exercise Physiology, Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran. (Received: 2013/4/6,Accepted: 2013/12/17)
Abstract
The aim of this study was to compare the effect of an aerobic exercise program with two different volumes on some risk factors of cardiovascular diseases in mentally retarded girls. 24 mentally retarded girls were randomly assigned to three groups: 1) aerobic exercise, 3 sessions per week for 45 minutes, 2) aerobic exercise, 4 sessions per week for 40 minutes, and 3) control. The experimental groups performed aerobic exercises including 10 minutes of warm-up, 30 minutes of walking, running and free games, and 5 minutes of cooling for 8 weeks with the intensity of 65-75% heart rate reserve. Data were analyzed using one-way ANOVA (Į<0.05). Results indicated that no significant differences among the three groups in lipid profiles, heart rate, and some body composition variables (fat percentage, BMI, WC) (P>0.05). To improve their cardiovascular endurance, mentally retarded girls can perform 4 sessions a week for 40 minutes, and to decrease WHR, they can apply 3 sessions a week for 45 minutes. Both volumes can be used for weight and VO2max.

Keywords: aerobic exercise, exercise volume, mental retardation, risk factors.

* – Corresponding Author: Email:[email protected] ,Tel: 051-44012765,
The Effect of Two Methods of Endurance and
Resistance Training on Plasma Apelin Levels and Some
Anthropometric Variables in Overweight and Obese Girls
Rezvane Galdavi1- Mehdi Mogharnasi 2
1. M.Sc. Student in Exercise Physiology, University of Sistan &
Baluchestan, Zahedan, Iran 2. Associate Professor in Exercise Physiology,
Department of Physical Education and Sport Sciences, University of
Sistan & Baluchestan, Zahedan, Iran
(Received: 2014/2/21,Accepted: 2014/5/24) Abstract
This study aimed at the effect of two methods of endurance and resistance training on plasma apelin levels and some anthropometric variables of overweight and obese girls. 34 overweight and obese girls (kg/m2 25<BMI) were selected purposively and randomly divided into three groups of endurance (n=12) (age 22.81±2.44 years, height 158.55±5.33 cm and weight 76.17±6.81 kg), resistance (n=12) (age 22.50±2.67 years, height 161.60±7.74 cm and weight 77.69±9.92 kg) and control (n=10) (age 21.50±2.41years, height 159.20±6.40 cm and weight 77.69 ±1.37 kg). Endurance training of running included 8 weeks, 4 sessions a week with intensity of 65-80% HRmax and resistance training included using weights for 8 weeks, 4 sessions a week with intensity of 65-80% 1RM. Blood samples were collected in fasting state 24 hours before the training session and 48 hours after the last training session. Data were analyzed by Kolmogorov-Smirnov test, dependent t test, one-way ANOVA and LSD post hoc test at Į<0.05. Apelin significantly decreased in the endurance group (P=0.005) but it did not change significantly in the resistance group. Also, There were significant differences in WHR, Vo2max and levels of apelin changes between the experimental groups and control group (P<0.05). Anthropometric variables decreased significantly in both experimental groups (P<0.05). The finding showed that endurance training was more effective in improving levels of apelin and obesity-related factors than resistance training.
Keywords:
anthropometric variables, apelin, endurance training, obesity, resistance training.

Corresponding Author: E-mail: [email protected], Tel: 09153412696
Variation of Blood Pressure, Heart Rate and Oxygen
Consumption and Their Relationship with Body Lipid
Profile in Active and Inactive Students
Majid Kashef1- Meisam Shabaaninia 2 – Sara Zare Karizak3
1. Associate Professor, Exercise Physiology Department, Shahid Rajaee
Teacher Training University of Tehran, Tehran, Iran 2. Lecturer of
Islamic Azad University, Shooshtar Branch, Shooshtar, Iran 3. PhD
Student of Exercise Physiology, Shahid Rajaee Teacher Training
University of Tehran, Tehran, Iran
(Received: 2013/9/10, Accepted: 2014/1/12)

Abstract
This study aimed at investigating the variations of blood pressure, heart rate and oxygen consumption and their relationship with body lipid profile in active and inactive students. 10 active students (mean age 21 yr, weight 68.1 kg and height 174.1 cm) and 10 inactive students (mean age 21.5 yr, weight 73.07 kg and height 177 cm) from Shahid Rajaee Teacher Training University who volunteered to participate in the study were randomly selected. The participants performed Canningham Faulkner submaximal treadmill test until exhaustion (slope: 20%, speed: 12.9 km/hr). Firstly, sitting systolic and diastolic blood pressures (SBP, DBP), sitting heart rate (HR), double product (DP), blood lipid, visceral fat, body fat ratio and body mass index were measured before the test. Then sitting BP and HR and DP were measured immediately after the test and after 3 minutes. The analysis of variance and covariance with repeated measures were used for data analysis. The results showed that recovery of HR (P=0.006, F=6.012), SBP (P=0.02, F=4.353) and DP (P=0.004, F=6.38) occurred more in active students. Modification of results with overweight and blood lipids showed the relationship between some of these indices and poor recovery in inactive students. So it can be stated that fitness and physical activity had positive effects on better recovery of hemodynamic indices after exercise even though no differences were observed in resting and exercise values. Overweight and dyslipidemia can partially explain some of these differences between active and inactive subjects. Thus it is recommended to control these factors by proper exercises and diets.
Keywords:
blood pressure, double product, dyslipidemia, heart rate, overweight, physical activity, recovery.

Corresponding Author: Email: [email protected], Tel: 09163548036

The Effects of 8 Weeks of Intermittent Training on
Lactate (La) Level and Lactate Dehydrogenase (LDH) Enzyme Activity in Male Wistar Rats
Allahyar Arabmomeni *1- Hamid Mohebbi2- Farhad RahmaniNia 3- Ahmad Riasi4
1. PhD of Exercise Physiology, Faculty of Human Sciences, Islamic Azad University, Khomeinishahr Branch, Khomeinishahr, Isfahan, Iran,2,3.
Professor of Exercise Physiology, Faculty of Physical Education and Sport
Sciences, University of Guilan, Rasht, Iran,4. Assistant Professor of
Animal Physiology, Faculty of Agriculture, Industrial University of
Isfahan, Isfahan, Iran
(Received: 2014/1/13,Accepted: 2014/5/24)
Abstract
The aim of this study was to assess the effects of intermittent training on lactate level and lactate dehydrogenase enzyme activity in Wistar rats. 20 male Wistar rats (mean age 3 months and weight 224±14 g) were selected and randomly divided into the training (n=10) and control (n=10) groups. The training protocol consisted of running on a treadmill for 4 minutes and then 2 minutes of active rest in 10 training phases for the experimental group. All rats were anesthetized with a mixture of ketamine and xylazine 48 hours after the last training session after an overnight fasting. To measure lactate and LDH enzyme activity, blood samples were obtained from their cardiac puncture. Data were analyzed by mean and standard deviation (M+SD) and independent t test. The results showed no significant differences in blood lactate level between the two groups, but there was a significant difference in LDH enzyme activity between the two groups (Pޒ0.05). These results indicate that intermittent training caused the clearance of lactate. Enhance of lactate replenished muscle glycogen and prevented H+ concentration which was produced along with lactate.
Keywords:
intermittent training, lactate (La), lactate dehydrogenase (LDH) enzyme, rat.

1. * Corresponding Author, Email: [email protected], Tel: 09133688572
The Effects of Two Kinds of Resistance Training and
Detraining on Serum Levels of Myostatin, Cortisol,
Testosterone and Muscle Strength of Non-Athlete Men

Mokhtar Askarpour 1 – Mohammad Reza Kordi2 – Fatemeh Shabkhiz3
1. M.Sc. of Exercise Physiology, Faculty of Physical Education and Sport
Sciences, University of Tehran, Tehran, Iran 2. Associate Professor,
Exercise Physiology Department, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran 3. Assistant Professor,

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اینجا کلیک کنید

Exercise Physiology Department, Faculty of Physical Education and Sport
Sciences, University of Tehran, Tehran, Iran
(Received: 2013/11/22, Accepted: 2014/1/22)

Abstract
The aim of this study was to determine the effect of two kinds of resistance training and one period of detraining on serum levels of myostatin, cortisol, testosterone and muscle strength of non-athlete men. For this purpose, 34 non-athlete men (age 33.35+2.8 yr) were divided into three groups: experimental A (4 sessions of training per week), experimental B (3 sessions of training per week) and control. The resistance training (24 sessions) was performed based on Cramer et al. (2004) including 3 sets of 8-10 repetitions with 60-70% 1RM in big muscles. Blood sampling, strength test and body composition measurement were performed before the first session, after the last session and after one period of detraining. The data were analyzed by Mix ANOVA and Tukey post hoc test. The results showed that resistance training increased muscle strength, fat free body mass and testosterone while it decreased cortisol and myostatin in both groups. This increase and decrease were higher in experimental A group than experimental B group (Pޒ0.05). Also, a period of detraining increased serum levels of myostatin and cortisol in experimental B group (Pޒ0.05). Finally, the findings showed that training frequency led to higher increase and maintenance of those changes resulted from resistance training.

Keywords: cortisol, detraining, myostatin, resistance training, testosterone.

Corresponding Author: Email: [email protected], Tel: 09127929803
The Effect of a Selected Aerobic Exercise on Some Physiological Factors in Patients with Migraine
Fereshte Karimi1, Vazgen Minasian2 , Sayed Mohammad Marandi3, Ahmad Chitsaz4
1.M.Sc. Student, Sport Sciences Faculty, University of Isfahan, Isfahan,
Iran,2. Associate Professor, Sport Sciences Faculty, University of Isfahan,
Isfahan, Iran, 3. Professor, Sport Sciences Faculty, University of Isfahan,
Isfahan, Iran, 4. Professor, Medical Faculty, Isfahan University of
Medical sciences, Isfahan, Iran
(Received: 2013/12/2, Accepted: 2014/6/30)
Abstract
Migraine is defined as a recurrent headache that is usually unilateral and associated with a complex neurovascular disorder and concurrent stimulation of pain pathways of trigeminal sensory nerves.The aim of this study was to investigate the effect of a selected aerobic exercise on some physiological factors in patients with migraine. 22 women with migraine (their age range 22 -53 years) were non-randomly divided into experimental (n=13) and control (n=9) groups. In addition to medical treatment, the experimental group participated in a selected exercise including 35-60 min. on a treadmill and ergometer bicycle with 50-75% HRmax, 3 sessions per week for 12 weeks. The control group received medical treatment but they were inactive and only participated in pretest and posttest. Data analysis showed that the protocol significantly reduced headache severity, CGRP and fat percentage, and significantly increased cardiovascular endurance of the experimental group (Pޒ0.05). Headache severity decreased from 34.23 to 14.30, CGRP decreased from 53.50 to 48.45% in posttest, fat percentage decreased from %31.45 to %25.25 and cardiovascular endurance increased from 24.81 to 41.81 ml/kg/bw. It was concluded that in line with other medical treatments, aerobic exercise may be used as a supplementary medical treatment in patients with migraine.
Keywords:
aerobic exercise, CGRP, migraine.

Corresponding Author: Email: [email protected], Tel: 09132020396
Time Dependent Effects of High Intensity Interval Training on Oxygen Uptake Kinetics in young males
Abbas Saremi 1- Nader Shavandi2- Imman Khakroo Abkenar3
1,2. Associate Professor of Exercise Physiology, Department of
Physical Education and Sport Sciences, Humanities Faculty, Arak
University, Arak, Iran 3. M.Sc. of Exercise Physiology, Department of
Physical Education and Sport Sciences, Humanities Faculty, Arak
University, Arak, Iran
(Received: 3/11/2013, Accepted: 17/2/2014)
Abstract
The aim of this study was to determine time dependent effects of high intensity interval training (HIIT) on oxygen kinetics in young males. 40 active students were randomly assigned to four groups: one session of HIIT, two sessions of HIIT, four sessions of HIIT and control. Both HIIT and control groups performed the incremental test on an ergometer bicycle. Two days after the pretest, training groups participated in one, two and four sessions of HIIT. Two days after the end of the training protocol, posttest was carried out. Oxygen kinetics parameters were measured by gas analyzer with breath-by breath method during the protocol, in the pretest and posttest test. The findings showed that one session of HIIT had no effects on oxygen kinetic parameters (P>0.05). Two sessions of HIIT improved some oxygen kinetic parameters such as VO2max, oxygen deficit and time constant 2 (P<0.05), but it had no effects on time constant 1 (P>0.05). In addition, four sessions of HIIT improved all oxygen kinetic parameters: VO2max, oxygen deficit, time constant 1 and 2 (P<0.05). It seems that four sessions of HIIT is the minimum necessary time to improve oxygen kinetic parameters and with regard to practical applications, coaches can use this type of training in their training program for faster improvement of aerobic and anaerobic performances.
Keywords:


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