Showing 4 results for Athletes
E Shafiei, M Mohammad Javadi, M.h Kariminasab, M Shayesteh Azar, M.m Daneshpour, R.a Mohammadpour, A Mohammadi,
Volume 19, Issue 74 (1-2010)
Abstract
Background and purpose: The anterior cruciate ligament (ACL) is one of the four major ligaments of the knee and also the most important knee stabilizer. Since the incidence of ACL tearing is especially high in young athletes, and reconstruction surgery and a prolonged rehabilitation may be rtequired, understanding the outcome of the ACL reconstruction surgery and preventive measures such as physiotherapy and muscle supporting exercises, could improve the outcome of the ACL reconstruction surgery. The aim of this study was to evaluate and recognize the outcome of ACL reconstruction surgery in athletes from Sari in 2007-2008.
Materials and methods: In this descriptive study, 57 male athletes (mean age: 26.56 ± 6.17 years) referred to several hospitals in sari during 2007-2008 were assessed after ACL reconstruction surgery. The assessment for the outcome of the ACL reconstruction surgery was done by physical examination, such as range of motion (ROM) and performing stability tests (lachman test, anterior drawer test). Data were analyzed using statistical tests ANOVA, χ2 and t -test.
Results: Mean age of the patients was 26.56 ± 6.17 years (17-51). Mean duration after surgery was 18.4 ± 10.57(5-35). The most common cause of tearing was playing soccer (63.2%). The right knee was affected in 35 players (61.4%) compared with the left knee in 22 (38.6%). Thirty three (57.9%) right knees were dominant in comparison with 24(42.1%) left knees. Type of trauma in 17 subjects (29.8%) was contact and 40 (70.2%) was non-contact. There were three (5.3%) patients with movement limitation (10-30˚) and five (8.8%) with knee instability. There was no significant relationship between mean duration after surgery and limitations in movements (P=0.412), knee stability (P=0.999), and patients satisfaction (P=0.412). There was a significant relation between dominant knee and stability (P=0.046).
Conclusion: According to the results of this study, it appears that performing ACL reconstruction surgery results in satisfaction of patients and can specially be helpful (if performed appropriately) in athlets.
Mahnaz Emami, Iraj Abdollahi, Nahid Rahmani, Mohammad Ali Mohseni-Bandpei, Tahereh Rezaeian, Sara Jambarsang,
Volume 26, Issue 137 (6-2016)
Abstract
Background and purpose: The purpose of this study was to systematically review published studies on the association between strength and strain of hamstring muscle in athletes with and without hamstring strain. Hamstring strain is highly prevalent in athletes. The probable recurrence of hamstring strain is annoying for athletes and athletic leagues, therefore, it is important to investigate its causes and search for solutions to prevent and treat this injury. Muscle strength as one of the causes of strain could be helpful in this field.
Materials and methods: Electronic databases including Science Direct, Elsevier, ProQuest, PubMed, and Google Scholar were searched. The search keywords included Athletes, Hamstring strain, Muscle incoordination, Electromyography, Isokinetic.
Results: A total of 380 articles was found of which 160 were duplicate, 150 articles were excluded according to their titles and abstracts, and the rest were studied. Finally 14 articles that met our inclusion criteria were selected. Six of the 14 studies were carried out in healthy athletes and eight investigated hamstring strain in athletes with the injury.
Conclusion: The results showed that hamstring muscle derangement was one of the most important factors causing hamstring strain. The evaluation of hamstring damage was found to be useful in anticipating future strain in athletes. This evaluation could be beneficial for rehabilitation prior to and after the strain.
Seyed Esmaeel Shafiee, Gholamreza Partovi, Parisa Eslami, Masoud Shayestehazar,
Volume 30, Issue 185 (5-2020)
Abstract
Background and purpose: Association between vitamin D and anterior cruciate ligament injury (ACLI) in male athletes is poorly understood, and current data are not sufficient and consistent. The present study investigated the association between vitamin D and ACLI in some Iranian male athletes.
Materials and methods: This cross-sectional study was carried out in 100 male athletes with knee pain attending Sari Imam Khomeini Hospital, Iran 2016. They were evaluated into two groups: male athletes with ACL injury (AI group; n=50) and without ACL injury (WAI group; n=50). ACL injury was verified according to physical examination and MRI findings. Data, including the age, serum 25 (OH) D concentrations, body mass index (BMI), and previous history of exercise were recorded and analyzed in SPSS V20.
Results: The mean age of participants and their serum 25 (OH) D levels were 28±6 years and 25.07±1.02 ng/dl, respectively. There were no significant differences between the two groups in mean age, BMI, and previous history of exercise (P> 0.05). The mean serum 25 (OH) D levels were found to be significantly lower in AI group than those in WAI group (P< 0.001).
Conclusion: The current study showed that lower serum concentrations of 25 (OH) D are associated with the risk of ACLI in male athletes.
Alireza Kashef, Fereshteh Shahidi, Behnamedin Jameie, Mojtaba Selehpour, Abasali Gaeini,
Volume 33, Issue 1 (11-2023)
Abstract
Background and purpose: Exercise training-induced sinus bradycardia is a common cardiac adaptation and change in athlete’s related to a reduction in intrinsic heart rate. This study aimed to investigate the effect of four weeks of high fat diet, four weeks of exercise training volume reduction and four weeks of detraining following six weeks of high-volume exercise training on the level of Hyperpolarization-activated, cyclic nucleotide-gated (HCN4).
Materials and methods: Thirty Sprague Dawley rats were divided into six groups randomly. Group 1 was the control group with standard diet. Group 2 was trained for ten weeks with high-volume exercise training and standard diet. Group 3 was trained for six weeks; after that, rats were trained with a volume reduction training protocol with standard diet. Group 4 was trained for six weeks; after that, rats were trained with a volume reduction training protocol with high fat diet. Group 5 was trained for six weeks and detrained for four weeks with high fat diet. Group 6 was trained for six weeks and detrained for four weeks with standard diet. After ten weeks, the level of HCN4 protein was assessed by Western Blotting for all groups.
Results: Our results have revealed that all experimental groups showed a reduction in HCN4 levels compared to the control group—the lowest HCN4 level for groups 2, 6, 3, 4, 5 and 1, respectively (P≤0.05). Besides, the result of electrocardiograph has demonstrated that the heart rate and RR interval in all experimental groups showed a reduction and elevation compared to the control group, respectively (P≤0.05).
Conclusion: Volume reduction training protocol in could restore sinus bradycardia effects rather than detraining after high-volume exercise training, but the effect of high fat diet should be investigated more.
