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Dr Heydar Sadeghi, Mohsen Ali Darchini, Hossein Nabavi Nik,
Volume 19, Issue 22 (12-2021)

Core stability (CS) is a popular term that has evolved into a fundamental concept the much rehabilitation, performance training and preventative programs. The purpose of this study is considering the relationship between CS power and endurance with performance of adolescence athletes. 12 male swimmers participated in the study. McGill Protocol, the core stability power, MBESTT and 30/60 sit-up test were used to measure the CS endurance and power, respectively. Participants' performance was measured as the specific (stroke-index, 100m crawl stroke) and general performance (standing-broad-jump (SBJ), vertical Jump, 9.1 m sprint, shuttle-run, flexibility and seated medicine-ball toss tests). The Pearson correlation coefficient was used to determine the relationship between the CS power and endurance with general and specific athletes' performance. The results showed only significance relationship between trunk flexion with SBJ and seated medicine-ball toss, and flexibility and total CS power score with flexibility. Also, negative significance relationship found between left lateral flexion with shuttle-run test and trunk flexion with stroke-index. The findings of this study showed a weak correlation between CS with specific and general athletes' performance. Based on our findings, there is no necessity for focusing on swimming training programs.

Hossein Nabavinik, Mohsen Ali Darchini, Reza Azimi,
Volume 20, Issue 23 (9-2022)

Introduction and Objective: Core stability and plyometric exercises are training methods that athletes use to improve their performance. The purpose of this study was exploring the effect of a period of six week plyometric and core stability exercise on some of physical fitness of boy's athlete. Methods: 36 male athletes who were male with 11-14 years old participated in the semi-experimental study. They randomly divided in three group that each group has 12 subjects (first group; core stability exercise, second group; plyometric exercise and third group; control). The performance tests (standing broad Jump, Vertical Jump, 9.1 m Sprint, Shuttle Run, Flexibility and seated medicine ball toss tests) applied a day before starting core stability and plyometric exercises. Then post-test applied. In order to analysis data, ANOVA test was used (p<0.05). Results: Both core stability and plyometric exercise group showed significance increase in performance tests (Standing Broad Jump, Vertical Jump, 9.1 m Sprint, Shuttle Run). Conclusion: Based on the findings, we recommend the core stability and plyometric exercises in order to improve some of physical fitness of athletes.

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