List of Articles muscle damage

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  1 - The effects of glutamine on serum LDH and CK in rats following a session of resistance activity
  Shima Ebadi Ardeshir Zafari
  Muscle pain after resistance activities, which occurs due to the destruction of sarcolema, increases the serum levels of LDH and CK enzymes as indicators of muscle damage. The results have shown that the use of food supplements such as glutamine can be useful in reducin More

  Muscle pain after resistance activities, which occurs due to the destruction of sarcolema, increases the serum levels of LDH and CK enzymes as indicators of muscle damage. The results have shown that the use of food supplements such as glutamine can be useful in reducing the serum indicators of muscle damage. The aim of the present study is to determine the effect of glutamine supplementation on serum indicators of muscle damage, including the serum levels of LDH and CK enzymes following a session of resistance activity. The present experimental study was carried out using an animal model in the form of a 3 group’s research design with a control group. To this end, 30 six-week-old adult male Wistar rats were kept under controlled conditions for 2 weeks and were then divided into three equal groups, including control, and resistance activity with/ without glutamine supplementation. The glutamine supplementation group received the prepared emulsion by gavage of 200 mg/kg of body weight. After five days, both experimental groups participated in a session of resistance activity (namely, climbing a smooth ramp with one and a half meters height and a 85° decline) with 4 sets, 5 repetitions, 30 seconds of rest between repetitions and 2 minutes of rest between sets. The initial load was considered equal to 50% of the rats' body weight. One-way analysis of variance and Bonferroni's post hoc test were used at a significance level of p ≥ 0.05. The levels of CK and LDH enzymes were different in groups. A five-day glutamine supplementation before performing a session of resistance activity can cause a lower increase in the serum levels of CK and LDH enzymes as serum indicators of muscle damage, which indicates the protective effect of glutamine in maintaining the integrity and structure of cell membrane. Manuscript profile
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  2 - The Effect of Skullcap Supplementation after a Session of Simulated Karate Activity on Some Antioxidant Indicators, Oxidative Stress and Selected Muscle Damage in Elite Karate Athletes
  Mohammad Reza Fazli Reza Gharakhanlou Mohammad Shariatzadeh Joneydi
  Karate is considered as one of the most intense and challenging exercise due to its intensity and types of activities. In these activities, the body is inflicted by the number of injuries and its antioxidant capacity is disturbed. Therefore, the present study was aimed More

  Karate is considered as one of the most intense and challenging exercise due to its intensity and types of activities. In these activities, the body is inflicted by the number of injuries and its antioxidant capacity is disturbed. Therefore, the present study was aimed at assessing the responses of muscle damage markers, oxidative stress and plasma antioxidant enzymes to the simulated karate activities and supplementation of skullcap plant in the elite karate athletes. Twenty-four eligible elite karate athletes were randomly assigned to two groups, consisting of placebo-activity group (n=12) and skullcap-activity group (n=12). The considered activities were based on the World and European Karate Championships programs. First, blood samples were taken from research groups at the rest and then desired activities were performed by athletes. Next, the second blood sampling was taken, immediately after the activity and after that, the subjects in placebo and skullcap groups received 500 mg of placebo and skullcap capsules, respectively. The third blood samples were taken one hour after that and the fourth blood sampling was two hours after taking the supplement. Finally, plasma was removed from the blood and CK, LDH, MDA, GPx, TAC, and SOD indicators were measured.Results showed that the indicators of muscle damage and oxidative stress significantly increased (p < 0.001) immediately after simulated karate activates and decreased during the recovery period as well, while these changes were higher in supplement group (p < 0.05). Furthermore, antioxidant indicators have significantly increased after the activities, and this increase was at a higher level (p < 0.05) throughout the recovery period in the supplement group. The results of the present study showed that skullcap supplementation increased antioxidant indicators in the recovery period and decreased muscle and oxidative damage factors. Therefore, this plant can be recommended as a supplement to reduce damages, stress, and fatigue for karate athletes. Manuscript profile
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  3 - The Effects of acute consumption of BCAA,s on inflammatory and muscle damage indicators following intense resistance training session in girls professional athletes
  Marjaneh  Mehrabi Bahram Abedi Mojtaba Khansooz
  The purpose of the present study was to determine the effect of acute BCAA supplementation on some inflammatory indicators and muscle damage following an intense resistance training session in female athletes. In this semi-experimental research with a pre-test-post-tes More

  The purpose of the present study was to determine the effect of acute BCAA supplementation on some inflammatory indicators and muscle damage following an intense resistance training session in female athletes. In this semi-experimental research with a pre-test-post-test design, 20 female athletes were randomly divided into 2 groups of 10: resistance training group with BCAA supplementation and resistance training group with placebo supplementation, one in the morning and one in the evening. A bout of resistance activity including 10 sets of eight repetitions of squats with 70% of 1RM using the Smith machine and a 3-minute rest between each set was performed by all participants. After completing the squat protocol, participants performed five consecutive sets of 20 repetitions (10 repetitions of split body weight jumps) with two minutes of rest between each set. The obtained data were analyzed using the dependent t-test and the covariance test with Benferroni's post hoc test using spss version 22 software. The results of the study showed that the serum levels of creatine kinase and the amount of delayed muscle pain and stiffness immediately, 24 and 48 hours and the serum levels of interleukin 6 immediately after intense resistance activity increased significantly compared to the baseline state. Also, the plasma levels of creatine kinase and the level of delayed muscle pain and stiffness in 24 hours and the level of interleukin-6 plasma levels have reached their peak after intense resistance activity, and this level was significantly higher than 48 and 72 hours after intense resistance activity. The present study showed that the consumption of BCAA supplement (0.22 g/kg) before and after exercise has no beneficial effect in reducing injury, muscle pain and inflammation in resistance trained women after senteric resistance training. Manuscript profile