Document Type : Research Paper I Open Access I Released under (CC BY-NC) license
Authors
1 Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tabriz, Tabriz, Iran Physiogenics Laboratory, Faculty of Physical Education, University of Tabriz, Tabriz, Iran
2 Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tabriz, Tabriz, Iran
Abstract
The aim of the present study was to determine the effect of eight weeks of Gymnastics High-Intensity Interval Training (GHIIT) versus Traditional Gymnastics Training (TGT) on specific growth factors, serum miRNAs' levels, and explosive power in adolescent male gymnasts.
In this semi-experimental study, 20 male gymnasts (age: 12.17 ±1.97 years; height: 143.14 ±5.46 cm; weight: 37.61 ±4.69 ) were randomly assigned into two groups.The training program consisted of eight weeks of skill-based training plus gymnastics physical conditioning. Skill training performed six sessions per week, 90 minutes per session at an intensity of 60–85% . However, the physical conditioning protocols differed: the TGT group trained at 60–85% for 60 minutes, while the GHIIT group trained at intensities above 80% for 28 minutes. Blood samples were collected 48 hours before and after the training protocol.. Additionally, explosive power were measured. Data were analyzed using Analysis of Covariance (ANCOVA), paired t-tests, and Bonferroni post-hoc tests.
Paired t-test results indicated that miR-1 and miR-206 levels significantly decreased in the GHIIT group post-test compared to pre-test (p < 0.05). ANCOVA results further revealed a significant decrease in miR-1 and miR-206 levels, and a significant increase in Medicine Ball Throw and Sargent Jump performance in the GHIIT group compared to the TGT group (p < 0.05). However, no significant changes were observed in Growth Hormone (GH), Testosterone, or IGF-1 levels in either group (p > 0.05).
It appears that GHIIT, compared to TGT, leads to greater improvements in growth-related miRNAs and explosive power in adolescent gymnasts.
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