Investigating the immediate effect of specific plyometric warm-up exercises on knee joint position sense in elite female gymnasts
Poster Presentation XML
1Islamic azad university
2استادیار ،دانشگاه خوارزمی
3دانشکده تربیت بدنی خوارزمی
Introduction: Due to repetitions of jump and landing activities, gymnasts are exposed to lower limbs injuries, including knee injuries. One of the basic principles of exercise, as well as the main prevention strategies, is to warm up properly before exercising. According to the results of previous research, warming affects the knee joint sensation and helps to prevent injury by increasing the sense of knee joint and muscle spindle. But it is necessary to pay attention to this issue as well as soccer that has a specific warm-up program. Therefore, in this research, the researcher was looking for the specific warming authorization effect on the attitude of the elite female gymnasts.
Methodology: In this quasi-experimental study, 24 elite female gymnasts were divided into two groups, experimental (n = 12) and control group (n = 12) with a mean age of 14.5 ± 0.91, weight 35.19 ± 3.77 g , 142.5±3/57 cm were homogeneously distributed. Before and after doing a session of the exercise protocol (experimental plyometric warming exercises with static and dynamic warm-up) for the experimental group and the static and dynamic warm-up for the control group, the knee joint’s sense of position was measured instantly at three angles of 15, 45 and 60 degrees Using image capture and Kinova software.
Results: The covariance analysis results showed a significant immediate effect of the specific plyometric exercises on the knee joint's sense of position in the angle of 15 degrees (P=0.013,F1,22=1.124), but the results respectively at the angle of 45 and 60 degrees (P=0.816,F1,22= 0.057),(P =0.437,F1,22=0.649) were not significant.
Discussion: The results of this study showed that specific plyometric exercises had an immediate effect on the knee joint's sense of position at angle 15, but the observations were not significant on the 45 and 60 degrees. therefore, it can be concluded from the findings of this study that the 15-degree joint position sense, which is required by most gymnastic movements, can be influenced by changing the severity, type and time of warming up and consequently damages are prevented