Ratio of isometric antagonist, agonist maximal isometric power in the shoulder joint in healthy women
Poster Presentation XML
Authors
1M.Sc. in Corrective exercise and sport injuries, Sports Sciences Faculty, Islamic Azad University, Karaj Branch, Alborz, Iran
2Assistant professor in Corrective exercise and sport injuries, Sport Medicine Research Center, Sport Science Research Institute, Tehran, Iran
3Assistant professor in Corrective exercise and sport injuries, Sports Sciences Faculty, Islamic Azad University, Karaj Branch, Alborz, Iran
Abstract
Accurate and adequate assessment of the strength of agonist and antagonist muscle groups seems necessary in designing better rehabilitation programs. The purpose of this study was to compare the ratio of agonist to antagonist muscle strength in non-athlete subjects. The shoulder joint is susceptible to injury due to the high mobility of the motor plates. One of the biggest causes of joint imbalances in the ratio of agonist to antagonist muscle strength. In this regard, we decided to determine the ratio of agonist to antagonist shoulder muscle strength in healthy women.
According to Morgan's table, we examined 313 female students of Islamic Azad University. The subjects were 18 to 24 years old. After screening and completing the relevant forms, we performed isometric strength tests. A total of eight tests were taken from each subject, with each test repeated three times and maximum test strength was recorded. To describe the data, mean and standard deviation were used as tables and graphs, and finally, to answer the questions after calculating the weighted normalized mean, and to obtain power ratios of 95% confidence intervals.
The mean of the population was used. The results of statistical analysis showed that the ratio of maximal isometric strength of flexor to extensor of shoulder joint muscles was 1.28. The ratio of maximal isometric strength of the abductor to adductor muscles of the shoulder joint of the subjects was 1.44. The ratio of maximal isometric strength of the muscles the horizontal flexors to the horizontal extensors of shoulder is 1.14. The results also showed that the ratio of maximal isometric strength of internal rotator muscles to external rotators was 1.26.
A key issue in prevention and treatment of muscle injuries is the accurate assessment of muscle strength, and given that the strength varies independently, knowing the average normal values of muscle strength around the joint in terms of exercise planning and physiotherapy after injury and rehabilitation. Since Para clinical trials are validated alongside clinical trials, awareness of the ratio of the muscle strength can be useful in assessing and preventing potential injuries as well as in program design.
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