Abbasali Gaeini; Hamid Arazi; Masoud Yusefi
Volume 1, Issue 1 , April 2011, Pages 79-89
Abstract
AbstractAim: The purpose of this study was to obtain normative values of body fat percent for athlete and non-athlete male adolescent in Tehran city.
Method: For this reason, 619 boys (11-12 years of age) including 306 athletes among 8 sports (with mean weight 33.9±6.0 kg and height 142.4±6.9 cm) ...
Read More
AbstractAim: The purpose of this study was to obtain normative values of body fat percent for athlete and non-athlete male adolescent in Tehran city.
Method: For this reason, 619 boys (11-12 years of age) including 306 athletes among 8 sports (with mean weight 33.9±6.0 kg and height 142.4±6.9 cm) and 313 non athletes (with mean weight 33.2±7.6 kg and height 140.5±6.7 cm) were selected randomly and participated in this descriptive study. Body fat percent calculated using slaughter equation and normative values of body fat percent for both athletes and non-athletes were obtained using descriptive statistics.
Results: The findings showed that normative values of body fat percent for athletes were in ranges of 8.72-19.09. Normative values of body fat percent for non-athletes were in range of 8.36-18.73. However, there were no significant differences between norms of body fat percent in athletes and non athletes.
Conclusion: With respect to result of this study, cultureal programs account into consideration for promotion knowledge about adverse effects of sedentary life especially in children and adolescents.
Key words: Norm, Body fat percent, Athlete, Non-athlete
Zinab Gurgin; Reza Gharakhanlou; Abdolhosin Parnow; Somayeh Rajabi; Mehdi Hedayati
Volume 1, Issue 1 , April 2011, Pages 1-10
Abstract
Abstract Aim: Nicotinic acetylcholine receptors (nAChRs) are integral membrane proteins and prototypic members of the ligand-gated ion-channel super-family. The Purpose of the present study was to investigate the effect of endurance, resistance and concurrent training on the content of nAChR in fast ...
Read More
Abstract Aim: Nicotinic acetylcholine receptors (nAChRs) are integral membrane proteins and prototypic members of the ligand-gated ion-channel super-family. The Purpose of the present study was to investigate the effect of endurance, resistance and concurrent training on the content of nAChR in fast skeletal muscles of male Wistar rats.
Method: Thirty male Wistar rats (220±15 gr) randomly were divided to four groups and followed 12 weeks of training according to the protocols. Animals of the endurance training group were exercised on treadmill for 12 weeks, 5 times a week, and 60 minutes a day at velocities up to 30 m/min. Animals of the Resistance group were housed in metal cage with a 2m high wire-mesh tower, with water bottles set at the top. Concurrent training group did both resistance and endurance trainings. Forty-eight hours after last session of protocols, animals were anaesthetized and the tibialis anterior (AT) was removed. For nAChR assay and for data analysis, ANOVA and independent- samples t- test were used.
Results: Data analysis showed that fast muscle nAChR content significantly difference between endurance, resistance and concurrent training groups with control group (P
Faegheh Khosh-khahesh; Marefat Siahkohian; Babak Nokhostin Rohi
Volume 1, Issue 1 , April 2011, Pages 23-32
Abstract
AbstractAim: The purpose of this study was to examine the effect of acute celecoxib administration on exercise-induced inflammation and lipid peroxidation markers.
Method: Twenty untrained, healthy male (age; 25.5±4.5 yr, weight; 72.8±7.9 kg, height; 177.3± 7.2 cm) were randomly assigned to treatment ...
Read More
AbstractAim: The purpose of this study was to examine the effect of acute celecoxib administration on exercise-induced inflammation and lipid peroxidation markers.
Method: Twenty untrained, healthy male (age; 25.5±4.5 yr, weight; 72.8±7.9 kg, height; 177.3± 7.2 cm) were randomly assigned to treatment (T) and placebo (P) groups. Blood samples were taken before, immediately, 3h and 24h after exercise. Subjects ran for 30 minutes with 75% VO2max on treadmill and 100 mg celecoxib and placebo administrated immediately and 12h after the second blood sampling to T and P groups respectively. White blood cells (WBC) and creatine kinas (CK) were measured by an autoanalyzer and malondealdehyde (MDA) by HPLC. Data were analyzed using repeated measures analysis of variance (ANOVA) with bonferoni correction and unpaired t-test.
Results: WBC levels were significantly increased 3h and decreased 24h after exercise in both groups (P≤0.05), while there was no difference between the two groups, though WBC levels were lower 24h after exercise in the T group than P group. CK levels were significantly increased immediately, 3h and 24h after exercise in both groups (P≤0.05), but there was no difference between the two groups, though CK levels were increased 24h after exercise in the T group than P group. MDA levels were significantly increased immediately after exercise in both groups (P≤0.05) but there was no difference between the two groups, though MDA levels were increased 24h after exercise in T group than P group.
Conclusion: Acute celecoxib administration could not affect inflammation and oxidative stress markers.Key words: Celecoxib, Lipid peroxidation, Inflammation
Hamid Rajabi; Ehsan Soleymani Far; Shirin Hasani Ranjbar; Ramin Heshmat
Volume 1, Issue 1 , April 2011, Pages 61-78
Abstract
AbstractAim: This study aimed to investigate the effects of intense resistance exercise on IGF-1 system and monitoring time course of changes in its components.Method: Nineteen healthy physical education students as trained group (age 22.21±1.44 years, height 178.41±6.39 cm, weight 73.47±7.86 kg) ...
Read More
AbstractAim: This study aimed to investigate the effects of intense resistance exercise on IGF-1 system and monitoring time course of changes in its components.Method: Nineteen healthy physical education students as trained group (age 22.21±1.44 years, height 178.41±6.39 cm, weight 73.47±7.86 kg) and fifteen healthy nonphysical education students as untrained group (age 23.07±1.91 years, height 174.02±5.08 cm, weight 70.47±10.13 kg) volunteered to participate in this study and each group were randomly divided into two experimental and control groups. Experimental groups performed one session of resistance exercise with 70-80% 1RM. Blood sampling was done 4 times, 2-hours after breakfast (Pre-test), immediately (T2), 4- (T3) and 7-hours after the exercise (T4). Blood samples were analyzed by RIA method. Two-way repeated measure (ANOVA), Friedman and Kruskal-Walis tests were used to analyze data.Results: One session of resistance exercise was associated with a significant increase in GH at T2 (P
Majid Baghdarnia; Hojatallah Nikbakht; Mohammadali Azarbayjani
Volume 1, Issue 1 , April 2011, Pages 51-60
Abstract
AbstractAim: The purpose of this study was to examine the effects of progressive interval training on serum testosterone to cortisol ratio in elite male karate athletes.
Method: Fourteen healthy, physically active males karateka with aged 20.36±3.43 yr, height: 175.71±5.96 cm, weight: 73.43±5.76 ...
Read More
AbstractAim: The purpose of this study was to examine the effects of progressive interval training on serum testosterone to cortisol ratio in elite male karate athletes.
Method: Fourteen healthy, physically active males karateka with aged 20.36±3.43 yr, height: 175.71±5.96 cm, weight: 73.43±5.76 kg were recruited for participation in this study. All subjects trained three days a week for five weeks. The intensity and duration of exercise increased from first to fourth weeks and then return to the level of beginning in the fifth week (taper). To identify the level of testosterone and cortisol at rest and after exercise, 10 ml venous blood samples were collected before and immediately after exercise at the beginning of first week and at the end of fourth and fifth weeks.The hormonal assays were performed by using commercially available Enzyme Linked Immunosorbant Assay (ELISA) kits.
Results: No Significant difference was observed between concentration of serum testosterone, cortisol and testosterone to cortisol ratio in week one compare to week four. However, with reduction of training intensity at fifth week the concentration of testosterone significantly decreased (P
Mohammad Faramarzi; Mohammadhosin Alizadeh; Ali Khazeni; Saeed Rostami
Volume 1, Issue 1 , April 2011, Pages 23-50
Abstract
AbstractAim: The purpose of this study was to determine the effects of two ergogenic drinks on metabolic indices changes in soccer players.Method: Forty eight soccer players (24 women and 24 men) with mean age of 18.7 ± 4.7 years were selected as two groups, long-term and short-term intermittent exercise. ...
Read More
AbstractAim: The purpose of this study was to determine the effects of two ergogenic drinks on metabolic indices changes in soccer players.Method: Forty eight soccer players (24 women and 24 men) with mean age of 18.7 ± 4.7 years were selected as two groups, long-term and short-term intermittent exercise. Then, each group randomly was divided into three; Zamzam (SD), Isostar (ID) and placebo (P) groups. Long-term intermittent exercise includes six stages of exercise in two half time. Fifteen minutes after breakfast, players have drunk 6 ml/kg of beverage and 1 ml/kg at the end of stages 1, 2, 4, and 5. In addition, they drank 4 ml/kg at the end of third stage (1st half time). Before and immediately after long-term intermittent exercise, blood glucose, insulin and triglyceride levels were measured. Blood lactate was measured at rest, 3 minutes after the first and second half time. Short-term intermittent exercise, includes three complete stages of RAST test with 10 minutes rest. Fifteen minutes after breakfast and at the end of each stage 2 ml/kg beverage were drunk. Glucose and blood lactate levels were measured at rest and immediately after each stage of RAST test. Results: Results showed that a significant increase in insulin and blood glucose levels after long-term activity in SD and ID groups. In addition, there was a significant increase in blood glucose levels at 3 minutes after every stage of the RAST test in SD and ID groups. However, in any variables, no significant difference was observed between ID and SD groups.Conclusion: It seems that the use of Zamzam and Isostar relatively the same rate increase level of blood glucose and insulin after long-term high- intensity intermittent exercise. Therefore, we can recommend to athletes to consume synergy beverage of Zamzam which is produce in own country.Key words: Ergogenic beverage, Zamzam, Isostar, Ekblom test, Rast test
Shadmehr Mirdar; Maedehsadat Raisi; Masoomeh Nobahar
Volume 1, Issue 1 , April 2011, Pages 11-23
Abstract
AbstractAim: The objective of this research was to investigate the effect of two peaks exercise training program during one week on some hepatic stress indexes (AST, ALT) in active girls.
Method: Twelve physical education girl students with ranged between 16-18 years old and mean maximal oxygen consumption ...
Read More
AbstractAim: The objective of this research was to investigate the effect of two peaks exercise training program during one week on some hepatic stress indexes (AST, ALT) in active girls.
Method: Twelve physical education girl students with ranged between 16-18 years old and mean maximal oxygen consumption 35.2±3.4 ml/kg/min, was selected and divided randomly into an experimental (n=7) and control (n=5) groups. The subjects in the experimental group performed two peaks exercise training program during one week with 70%, 80%, and 90% VO2max intensities in the first three days and repeated in late three days. The control group did not perform any physical activity while the research was underway. Venous blood samples were obtained for analysis before the exercise and the 24 hours after one, 3, 6 days exercise sessions. Data were analyzed by using ANOVA with repeated measure test and independent t-test at significant levels p
