University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Effect of Resistance Training on Metabolic Profile and Insulin Sensitivity in Obese Men
5
19
FA
Amir Hosain
Haghighi
0000-0002-7258-9737
استادیار دانشگاه تربیت معلم سبزوار
ah.haghighi@hsu.ac.ir
Mohammad Reza
Hamedi nia
دانشیار دانشگاه تربیت معلم سبزوار
mrhamedinia@sttu.ac.ir
Ali Asghar
Ravasi
0000-0002-5549-2132
دانشیار دانشگاه تهران
aaravasi@ut.ac.ir
The aim of the present research was to study the effect of resistance training on metabolic profile and insulin sensitivity in obese men. For this purpose, 16 obese males (age 35-48) were voluntarily selected and randomly assigned to two groups: resistance training and control group. Subjects' blood samples were gathered in fasting state. The experimental subjects received resistance training for 13 weeks, 3 sessions per week. The resistance training was performed in a circuit fashion in 11 stations with a 50-60% intensity of one maximum repetition (1-RM). Data were analyzed using t-student and showed that resistance training had no effect on variables of body weight, WHR, systolic and diastolic pressure, fasting blood glucose and triglyceride. But this training significantly decreased variables of body fat percentage, total cholesterol, LDL-C, glycolide hemoglobin and insulin. Resistance training significantly increased VO2max, HDL-C, and insulin sensitivity indexes. We concluded that resistance training improved metabolic profile and insulin sensitivity in obese men; and could be considered as an effective component to train these men.
Insulin sensitivity,metabolic profile,Obesity.,resistance training
https://jsb.ut.ac.ir/article_22011.html
https://jsb.ut.ac.ir/article_22011_452a18801cdfa9f831536cba093db2ad.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Effect of Exhaustive Running with Different Intensities on Adiponectin Concentration in Active Females
21
39
FA
Valiollah
Dabidiroshan
0000-0002-2202-7349
دانشیار دانشگاه مازندران
vdabidiroshan@yahoo.com
Bahram
Sadeghpour
استادیار دانشگاه مازندران
vdabidiroshan5@yahoo.com
Zahra
Jahanian
کارشناس ارشد دانشگاه مازندران
vdabidiroshan4@yahoo.com
The aim of this research was to evaluate the effect of one session of exhaustive exercise with low intensity (55-65% VO2max), moderate intensity (65-75% VO2max) and high intensity (75-85% VO2max) on adiponectin in active women. For this purpose, 30 healthy women (mean age 21.6 years, weigh 59.7+3.35 kg, VO2max 39.1+0.58 ml/kg/min, no history of cardiovascular diseases and diabetes) were selected and divided into three groups: low intensity active (LAG), moderate intensity active (MAG) and high intensity active (HAG). The protocol was a progressive running up to exhaustion on a treadmill with 55-65%, 65-75% and 75-85% of VO2max intensity according to Karvonen formula. Blood samples were obtained before and 30 minutes after the training in the same condition and following 12-14 hours of fasting. 7 ml of blood was obtained from the subjects' forearm vein in a sitting position and transported to the laboratory. Adiponectin, glucose and insulin were measured by ELISA and TG and LDL-C by enzymatic methods. Data were analyzed by T-test and analysis variance at P?0.05. Results showed that adiponectin level increased in three groups (LAG, MAG, HAG) but this increase was significant only in LAG group (P=0.01). On the other hand, adiponectin did not significantly change among groups. Although T- test analysis showed that glucose decreased significantly in all groups and insulin concentration changed significantly in MAG and HAG, insulin changes were insignificant between MAG and HAG only. This research showed that an increase in the training intensity and a decrease in duration slightly changed serum adiponectin in active young women.
Active Women,Adiponectin,Exercise Intensity.,Exhaustive Running
https://jsb.ut.ac.ir/article_22012.html
https://jsb.ut.ac.ir/article_22012_8308fa8241c560a022e4215057d14a43.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
Interference Effect of Concurrent (Simultaneous Strength and Endurance) Training on Maximum Strength and VO2max Development
41
55
FA
Javad
Vakili
دانشجوی دکترای فیزیولوژی ورزشی دانشگاه تهران
vakili.tu@gmail.com
Ali Asghar
Ravasi
0000-0002-5549-2132
دانشیار دانشگاه تهران
aaravasi@ut.ac.ir
Abbas Ali
Gaeini
0000-0002-8679-0669
استاد دانشگاه تهران
aagaeini@ut.ac.ir
The purpose of this study was to investigate the interference effect of concurrent strength and endurance training on maximum strength and VO2max in non-athletes. For this purpose, 34 sedentary healthy men (mean age 22±1.18 years, height 173.61±6.48 cm, and weight 56.13±8.50 kg) voluntarily participated in this study. Initially, subjects were randomly assigned to one of four training groups: strength (n=8), endurance (n=10), concurrent (n=8) and control (n=8). Endurance group performed Bumpa interval endurance training program for 6 weeks (3 days per week, 12.30 – 25 minutes, 50-70%HRR), strength group performed resistance program for 6 weeks (3 days per week, 6 exercises, 3 sets, 75-85% 1-RM), and combined group performed a combination of strength and endurance training for 6 weeks. Control group did not participate in any of the above mentioned training programs. All subjects performed VO2max (Bruce test) and maximum strength (mechanical lift) tests before and after the training program. One–way ANOVA was applied to examine the hypotheses. The results of paired T test showed that concurrent training significantly increased strength (p=0.000) and VO2max (p=0.000). Moreover, there was no significant difference in VO2max between concurrent (16%) and endurance (18%) (p=0.95) and in maximum strength between concurrent (31%) and strength (39%) (p=0.31).Concurrent strength and endurance training did not interfere with maximum strength and VO2max development when compared to strength and endurance training.
concurrent training,Endurance,Maximum Aerobic Power.,strength
https://jsb.ut.ac.ir/article_22013.html
https://jsb.ut.ac.ir/article_22013_e2bfbb4b0a10639ebb199c63dc16fedb.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Cardiovascular and Metabolic Responses and Their Relationship to Fatigue Time in Upper and Lower Body Incremental Exercises in Young Professional Karate Players
57
75
FA
Bakhtyar
Tartibian
استادیار فیزیولوژی ورزشی گروه تربیت بدنی دانشگاه ارومیه
babak_hady@yahoo.com
Behroz
Derafshi
کارشناس ارشد فیزیولوژی ورزشی دانشگاه ارومیه
babak_hady6@yahoo.com
Behzad
Hajizade
کارشناس ارشد فیزیولوژی ورزشی
babak_hady5@yahoo.com
Asghar
Abbasi
دکتری ایمونولوژی و ژنتیک ورزشی دانشگاه توبنیگن آلمان
babak_hady7@yahoo.com
The purpose of this study was to determine and compare blood lactate, heart rate and blood pressure responses in arm and leg exercises and to determine the relationship between these variables and fatigue time during these two modes of exercises. 8 young professional karate players (mean age 18.90±2.20) volunteered to participate in this study. The subjects completed two ergometers: arm and leg ergometers and Monark ergometer (Model 838E). Cardiovascular heart rate (HR), blood pressure (BP) and fatigue time were measured and recorded immediately after each exercise test. Blood samples as well were collected by enzymatic lactate reagent after two exercise tests to measure blood lactate concentrations (mg/dl). There were not significant differences between arm and leg exercises in blood lactate concentration and blood pressure (P=0.22 and P=0.15 respectively). But maximal HR was significantly higher in the leg exercise compared to the arm exercise (P=0.02). The correlations of blood lactate, HR, and BP with fatigue time were r=0.88, r=0.68 and r=0.76 for the arm exercise and r=0.71, r=0.57 and r=0.49 for the leg exercise respectively. The results of this study suggested no significant differences in blood lactate and blood pressure responses between upper and lower body exercises. However, maximal HR response significantly differed between these two exercises. Therefore, when preparing sport exercises, HR responses should be considered separately in arm and leg exercises.
Fatigue Time,karate,Lactate.,Lower Body Exercise,Upper Body Exercise
https://jsb.ut.ac.ir/article_22014.html
https://jsb.ut.ac.ir/article_22014_88cac52c2e0284f8d0d5d34dd3980092.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Effects of Short Term Creatine Supplement in Sprint Performance and Muscular Strength in Wrestlers
77
92
FA
Abbas Ali
Gaeini
0000-0002-8679-0669
استاد دانشگاه تهران
aagaeini@ut.ac.ir
Ebrahim
Alidoust
دانشجوی دکتری دانشگاه تهران
aagaeini3@ut.ac.ir
Ali
Ahmadi
دستیار علمی دانشگاه پیام نور
aagaeini2@ut.ac.ir
Malihe
Abolhasan
0000-0002-8679-0669
کارشناس ارشد تربیت بدنی
aagaeini@ut.ac.ir
The purpose of this study was to investigate the effects of short term creatine monohydrate as an ergogenic supplement on the sprint performance and muscular strength of wrestlers. 20 wrestlers were selected randomly and divided into two groups. One group was placebo group (control) and the other group was creatine supplement group (experimental). In a double blind project, subjects' speed running, perseverance in repeated alternative speeds and muscular strength (with 1-RM in knee extension) were measured before creatine and placebo as pretest, and after that as posttest. Creatine and placebo were used for 7 days (20 grams creatine monohydrate per day by experimental group and 20 (g/d) dextrose polymer as placebo by control group).The data were analyzed by correlated t – test (for each group) and independent t-test (between two groups). The results showed that short term use of creatine supplement had a significant effect on short term running (20 and 40 meters), long term running (60 and 100 meters), interval speed endurance running (30 fast running in 5 seconds with 10 seconds of rest between each running) and muscle strength (1-RM in knee extension) of wrestlers (p<0.05).
Creatine Supplement,muscular strength.,Sprint performance,wrestlers
https://jsb.ut.ac.ir/article_22015.html
https://jsb.ut.ac.ir/article_22015_e5035bda37f0d6314bd95a4e283d2379.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Effect of Indomethacin on Biochemical, Functional and Superficial Symptoms of Delayed Onset Muscle Soreness (DOMS) in Untrained Men
93
110
FA
Bakhtyar
Tartibian
استادیار فیزیولوژی ورزش گروه تربیت بدنی دانشگاه ارومیه
babak_hady@yahoo.com
Behroz
Derafshi
کارشناس ارشد فیزیولوژی ورزش
babak_hady6@yahoo.com
Behzad
Hajizade
کارشناس ارشد فیزیولوژی ورزش
babak_hady4@yahoo.com
Asghar
Tofighi
استادیار فیزیولوژی ورزشی
babak_hady3@yahoo.com
The purpose of this study was to examine the effect of indomethacin on biochemical, functional and external symptoms of delayed onset muscle soreness (DOMS) following eccentric exercise. For this purpose, 20 untrained, healthy male volunteers (age 25.8+6.9 years and fat 15.9+9.3 %) were selected and randomly divided into experimental (n=10) and placebo (n=10) groups. In a double blind study, subjects were asked to consume 75mg/d indomethacin or placebo for 5 days before and 48 hours after eccentric exercise protocol. DOMS was induced using controlled plantar flexion causing eccentric contraction of tibialis anterior muscle. The rate of prostaglandins E2 (PGE2), perceived pain, foreleg circumference, range of motion in foot joint were measured before, immediately, 24 and 48 hours after eccentric protocol. The results indicated that indomethacin failed to prevent the increased PGE2, pain, soreness, inflammation and reduction in range of motion in foot joint immediately after exercise. However, PGE2 levels decreased significantly 24 hours (p=0.001) and 48 hours (p=0.001) after exercise. Significant changes (p<0.05) also were observed in foreleg circumference and range of motion in foot joint 48 hours after exercise. In conclusion, the results of the present study indicated that indomethacin can be useful in long term recovery period, which generally is accompanied by delayed onset muscle soreness.
delayed onset muscle soreness,Indomethacin,untrained men.
https://jsb.ut.ac.ir/article_22016.html
https://jsb.ut.ac.ir/article_22016_ee42d89f9f2f0fbb4cd1c6d716285920.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Effect of Walking on Quality, Quantity and Some Physiological Parameters Related to Sleep in Old Men
111
126
FA
Farhad
Rahmani nia
0000-0002-7021-0065
استاد دانشگاه گیلان
frahmani2001@yahoo.com
Hamid
Mohebi
0000-0003-1524-9530
استاد دانشگاه گیلان
mohebbi_h@yahoo.com
Mostafa
Saberian
کارشناسارشد فیزیولوژی ورزش
frahmani20012@yahoo.com
The purpose of this study was to compare the effect of a walking (8wk) training program on quality, quantity and some physiological parameters related to sleep in old men. Twenty elderly healthy men (age 72.4?7.24 years, height: 163.59?6.11 cm, weight 68.31?9.19kg) were selected randomly and were divided into two groups [walking (n=10) and control (n=10)]. The walking group exercised for eight weeks, three sessions each week and each session 30-45 minutes. The intensity of the exercise was 60-75% of HRR on treadmill. To determine sleep quality, participants completed the Pittsburgh Sleep Quality Index (PSQI) before and after the eight weeks of aerobic training, and the quantity of sleep was examined by recording the duration of night sleep of the subjects. The physiological parameters related to sleep (TG, TC, HDL) were also measured before and after the eight weeks of training program. The results showed that sleep quality of subjects in walking group improved 31% and the sleep quantity increased by 45 minutes (P<0.05), and HDL and TC improved significantly in the walking group (p<0.05). Independent t – test showed a significant difference in sleep quality and sleep quantity between the two groups (P<0.05). However, there was no relationship between the quality and quantity changes of sleep to changes of physiological variables related to sleep. Therefore, it can be concluded that eight weeks of walking improved the quality and quantity of sleep along with some physiological parameters related to sleep in older adults and can be a useful way to treat the sleep problems in the elderly.
old men.,physiological parameters,sleep quality,sleep quantity,Walking
https://jsb.ut.ac.ir/article_22017.html
https://jsb.ut.ac.ir/article_22017_9891aee9e32552b9c9f706428afc0f49.pdf
University of Tehran
Journal of Sport Biosciences
2008-9325
2676-4148
1
3
2009
12
22
The Relationship between Underweight and Overweight to Physical Fitness and Socioeconomic Status of Students
127
144
FA
Farhad
Rahmani nia
استاد دانشگاه گیلان
farhamani20013@yahoo.com
Hassan
Daneshmandi
استادیار دانشگاه گیلان
farhamani20012@yahoo.com
Amir
Taghi pour
کارشناسارشد فیزیولوژی ورزش دانشگاه گیلان
farhamani2001@yahoo.com
The purpose of the present study was to study the relationship between underweight and overweight to physical fitness as well as socioeconomic status. 384 schoolboys and schoolgirls who studied in elementary school and high school (age (yr) 12.5?3.6, weight (kg) 51.48?13.4, height (cm) 163?11.27) were randomly selected to take part in the experiment. To determine underweight and overweight, Cut off - BMI was used so that if BMI?15% underweight, 15% <BMI<85% normal, 85%?BMI<95% overweight and 95%?BMI obesity. In order to study the physical fitness, muscular endurance (sit-up), explosive power (high jump), flexibility (sit and reach), agility (4?9m) and maximum consumption oxygen (540 m) were used. Furthermore, in order to study the socioeconomic status of families, the questionnaire of economic - social status was used. Pearson correlation coefficient was used to investigate the relationship between underweight and overweight to socioeconomic status and Spearman correlation coefficient was used to investigate the relationship physical fitness and underweight and overweight as well as socioeconomic statues. Our results indicated a significant relationship between underweight and physical fitness of the students (P?0.05), whereas there was not a significant relationship between overweight and physical fitness of the students. Furthermore, there was a significant relationship between BMI and physical fitness (P? 0.05). There was no significant relationship between each variable of underweight, overweight and BMI to socioeconomic status of the students. There was a significant relationship between physical fitness and socioeconomic status of the students (P? 0.05); this relationship was significant in schoolboys but insignificant schoolgirls. Results of the present study indicated that students who have BMI lower than the acceptable weight enjoyed more physical fitness. They also demonstrated no relationship between socioeconomic status and BMI; but physical fitness of the students with higher socioeconomic status was better.
BMI,Obesity,physical fitness,Socioeconomic Status.,Underweight
https://jsb.ut.ac.ir/article_22018.html
https://jsb.ut.ac.ir/article_22018_b2a6c8f1011ded22e669ada48c39c235.pdf