A Rahmani; B Mirzaei
Abstract
Aim: Resistance training with new methods of exercise such as blood flow and respiration restriction that is more performed at a lower intensity is pursued various physiological responses. Therefore, the main purpose of this study was to determine the effect of blood flow and respiratory restriction ...
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Aim: Resistance training with new methods of exercise such as blood flow and respiration restriction that is more performed at a lower intensity is pursued various physiological responses. Therefore, the main purpose of this study was to determine the effect of blood flow and respiratory restriction on blood lactate concentration and growth hormone in the acute response to resistance exercise in collegiate wrestlers. Method: In this study, a cross-sectional was used in which 8 collegiate wrestlers with more than two years' experience (mean age 26.87±4.7 years and body mass index 25.26±2.49 kg/m2) were randomy assigned in three conditions including: control (%801RM) and resistance exercise with blood flow and respiratory restriction (%301RM). Four sets with 15 repitations squat were considered as resistance exercise. Blood samples were collected before and immediately after exercise. Results: all three types of exercise caused a significant increase in lactate and growth hormone immediately after the exercise (p <0.05), but no significant difference was observed between the groups (p <0.05). Conclusion: The results of this study indicate that resistance exercise with restriction of blood flow and respiration such as routine resistance training can lead to increased metabolic and hormonal responses. This research also rather confirms the effectiveness of this type of exercise and satisfies the goals such as increased lactate and growth hormone expected from high intensity exercises.
Sharam Gholamrezaeii; Bahman Mirzaei; Hamid Arazi; Farhad Rahmani-nia
Volume 5, Issue 2 , February 2016, , Pages 133-149
Abstract
Aim: The present study was carried out to determine the effect of garlic supplementation on some inflammatory indices following exhaustive aerobic exercise in sedentary female. Method: Nineteen volunteer sedentary young females (age 23.15±2.65 years, BMI 22.93±1.25 kg.m2,VO2max 30.36±4.5 ...
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Aim: The present study was carried out to determine the effect of garlic supplementation on some inflammatory indices following exhaustive aerobic exercise in sedentary female. Method: Nineteen volunteer sedentary young females (age 23.15±2.65 years, BMI 22.93±1.25 kg.m2,VO2max 30.36±4.5 persent and bruce time 7.82±1.03) were assigned to a randomized and double-blind into two equal garlic (n=10) and placebo (n=9) groups. After 14 consecutive days supplementation (500 mg garlic or lactose every 12 hours a day), all subjects were participated in incremental aerobic exercise protocol (Bruce test). Changes in inflammatory and enzymatic markers were determined in four phases (before supplementation phase, before exercise, immediately and 24 hours after the aerobic exercise). Data were analyzed by repeated measure and independent T test at P≤0.05. Results: The results showed that one session of exhaustive aerobic exercise significantly increased some of the inflammatory and oxidative stress markers, in both groups (P≤0.05). Also, garlic supplement can decrease Hs-crp, Lymphocyte, Neutrophil, AST and ALT levels immediately after exercise protocol (P≤0.05). But other markers (total WBC, IL-6, LDH, CPK) were not changed significant. Conclusion: The results of this study showed that the garlic supplementation leads to decrease some of inflammatory and enzymatic indices of oxidative stress. Therefore, based on the present results, garlic supplementation can reduce the oxidative stress markers ranges following the exhaustive aerobic exercise.
Bahman Mirzaei; Farhad Rahmani nia; Amir Rashidlami; Mehdi Ghahremani Moghaddam
Volume 3, Issue 2 , July 2014, , Pages 129-139
Abstract
Abstract
Aim: Aging in human is associated with a loss in neuromuscular function and performance. This is related, in part, to increased oxidative stress and decreased antioxidants status. Uric acid and bilirubin considered as two main antioxidant in blood and have a significant relationship with Total ...
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Abstract
Aim: Aging in human is associated with a loss in neuromuscular function and performance. This is related, in part, to increased oxidative stress and decreased antioxidants status. Uric acid and bilirubin considered as two main antioxidant in blood and have a significant relationship with Total Anti Oxiidait Capaciy. The aim of present study was to examin the effects of resistance exercise on total antioxidant capacity, bilirubin and uric acid in non-athlete and elderly wrestlers.
Method: 8 elderly wrestlers (age 59.75 ± 1.98, Height 172.25 ± 7.08 cm, Weight 76 ± 14.6 kg) and 7 untrained (age 61.42 ± 1.9, Height 173.14 ± 4.09 cm, Weight 79.71 ± 8.15 kg) elderly people volunteered as subject for the study. Subjects completed resistance exercise protocol including: bench press, leg extension, lat-machine pull down, leg curl, cable triceps curl and cable biceps curl with 60-70% of 1RM and with 8-12 repetitions. Blood samples were colected at pre, post and 24 hours after resistance exercise.
Results: Resistance exercise did not caused any significancant differences in indices but the baseline amount of total bilirubin and TAC was higher in athlete group, but not significantly.
Conclusion: The results of this study showed a single bout of resistance exercise had not significant effect on antioxidant status in athlete and non-athlete elderly men.
Key words: Antioxidant, Aging, Uric acid, Bilirubin, Wrestling.
Bahman Mirzaei; Farhad Rahmani-Nia; Mortezah Nastaran
Volume 3, Issue 1 , April 2013, , Pages 71-80
Abstract
Abstract
Aim: Various studies have demonstrated that different rest intervals has a significant effect on hormonal, metabolic, and cardiovascular responses. This factor can lead to different muscle damage responses and manipulate training goals. The purpose of this study was to compare the effect of ...
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Abstract
Aim: Various studies have demonstrated that different rest intervals has a significant effect on hormonal, metabolic, and cardiovascular responses. This factor can lead to different muscle damage responses and manipulate training goals. The purpose of this study was to compare the effect of 1 and 3 minute rest intervals between sets and exercises on muscle damage and sustainability of repetition in consecutive exercises.
Method: 12 untrained subjects (aged 23.17±2.06 years, height 175±3.55 cm, weight 67.33±8.26 kg, fat 16.67±1.82 percent) volunteered to participate in this study in two resistance exercise sessions with a 2-week recovery between sessions. Exercises order in each session consisted of front leg extension, biceps curl, leg curl, triceps extension, leg press and bench press with 80% of one repetition maximum (1RM) until fatigue. Subjects randomized for 1 and 3 min rest intervals in each session. The levels of CK and AST were analyzed before, 24 and 48 hours after resistance exercises. Also muscle soreness was evaluated by the Shailaja scale (PAS) at before, immediately, 24 and 48 hours after resistance exercises. Variance analysis with repeated measurment, pair sample t-test and Bonferroni post-hoc were used for statistical analysis of data.
Results: CK and AST concentration increased significantly after 24 and 48 hours and muscle soreness also elevated immediately, 24 and 48 hours after resistance exercises (P≤0.05), but no significant difference in muscle soreness and enzymes concentration was found between groups at different time points. The results demonstrated that 3 min rest intervals lead to increased repetitions (P≤0.05).
Conclusion: Differences of load volume and sustainability of repetitions at different time points of rest intervals are independent of muscle damage responses and muscle soreness. Also, 3 min rest intervals led to repetition sustainability and appropriate recovery.
Key words: Biochemical markers, Recovery time, Exercise volume
Hamid Mohebbi; Mortezah Sangdovini; Bahman Mirzaei
Volume 2, Issue 1 , April 2012
Abstract
Abstract
Aim:The purpose of this study was to compare the effects of 1-set and 3-set resistance training on muscular strength of upper-body and lower-body in untrained men.
Method: For this reason, 18 untrained college students of Guilan University participate in this study as subject. Subjects were ...
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Abstract
Aim:The purpose of this study was to compare the effects of 1-set and 3-set resistance training on muscular strength of upper-body and lower-body in untrained men.
Method: For this reason, 18 untrained college students of Guilan University participate in this study as subject. Subjects were randomly assigned to either the 1-set group (n=9), or the 3-set group (n=9). Subjects trained 3 days per week for 8 weeks. Training intensity was the same for both groups (8RM). At the beginning and the end of the study muscular strength was measured using one repetition maximum test (1RM) in two upper-body exercises (chest press and biceps curl) and two lower-body exercises (leg extension and leg curl). Data was analyzed using paired t-test for within group’s comparison, and unpaired t-test for between-groups comparison.
Results: After 8 weeks, muscular strength significantly increased in all of upper-body and lower-body exercises in both groups (P
