| Research purposes:10-12-year-old research purposes, it is a critical period of physical growth and development, physical growth and development of this stage a direct impact on the life of the future. Understanding of the physical condition of the juvenile, and to provide reference data for the local authorities concerned about the development of our youngsters to understand the physical condition of the juvenile athletes, coaches can provide reference for evaluation. So how can the teenager in a critical period of physical growth and development of better development, and enhance the physical condition, this study is to understand from the juvenile body shape, physical function, physical and other aspects of the development status of the juvenile constitution in order to achieve the research purpose.Research Methods:In this study,10-12year-old the Xiangxi weightlifting Center weightlifting team started going to school Junior and outside the juvenile of the same age the object of study, the the weightlifting Cadet for the experimental group, this sport for initial training outside with the age of juvenile control group. Six months later, the test two groups of juvenile body shape, physical function, physical and other indicators to understand the changes of the indicators of the experimental and control groups.Research Results:1. An experiment after the experimental group and control group comparison:body shape in dices, the experimental group, height, sitting height, arm circumference, thigh circumference, the mean growth was significantly greater than the magnitude of the mean change in the control group experiment showed that the weightlifting its effect significantly less than the control group; experimental group experiments Hip, waist terms of the mean change quite mean growth in the experimental group is slightly higher in fat content, lean body mass but significant increase in percentage of body fat, manifested in the experimental group growth is less than the control group; body functional aspects by the paired samples t test, vital capacity (p<0.01) showed a very significant difference in the rest of the body function indicators (P>0.05) without significantly significant differences by excel, respectively, compare experiments before and after the experimental group and the control group the average growth rate of the mean resting heart rate of experimental group after the experiment quiet than the control group, mean heart rate decrease in the experimental group systolic blood pressure mean a slight increase in systolic blood pressure of the control group showed decreasing experimental group and control mean of group diastolic blood pressure decreased, but the experimental group mean than the control group the mean decrease; physical indicators of sit-ups (p<0.05) showed significant differences, the rest of the physical indicators (P>0.05) did not show significant difference, excel respectively before and after training, the average growth rate between the experimental and control groups, experimental group, grip strength, standing long jump, vertical jump the Mogao The mean growth was significantly higher, due to the30m,60m results time the more better experimental group60m score higher than the control, while the30m results somewhat less, standing long jump is consistent with the level of the mean growth, no significant differences.2. By paired samples T-test control group before and after the experiment, the physical rate of the body shape index and fat content (P<0.01) showed a very significant difference. The remaining parameters were not shown significant differences indicate that under natural conditions, the body shape index did not change significantly; bodily functions and physical, did not show significant differences, indicating that the control group, the stimulation of the external conditions, the natural growth did not change significantly.3. Before and after changes in the experimental group, the body shape of many indicators of both has difference, in which height, sitting high, chest, thigh Wai, body weight, lean body weight and other indicators (p-<0.01) has a very significant significant difference, waist, upper arm circumference (P<0.05) with significant and show that this sport for juvenile body shape affect significantly with; changes in body function indicators the only vital capacity (p-<0.01) with very significantly with the difference; and physical strength, grip strength, vertical jump Mogao,60m (P<0.01) has a very significant difference.Conclusion:1. Weightlifting exercise in improving the juvenile body shape to show the two sides. In the body morphology height, circumference growth showed a catalytic role in the body height increased circumference increased significantly; showed inhibition in the percentage of body fat, reduce the percentage of body fat, can effectively reduce the fat content, to improve the juvenile body composition, by this sport for the effective control of juvenile body obesity.2. Two physical function, after a period of time after weightlifting exercise training, indicating that the weightlifting exercise for improving physical function of heart rate, blood pressure and other indicators, the role of less obvious, but to improve bodily functions vital capacity has a significant role and can effectively improve the juvenile bodily functions indicators of lung function. To improve lung capacity.3. Physical side, after a period of weightlifting training, can be drawn, this sport for a certain role in improving the quality of strength and speed quality, grip force before and after the experiment showed a very significant difference (P<0.01), vertical jump Mogao also showed significant difference (P<0.05) shows that the power of the quality is improved; in terms of speed of quality,60meter dash fully proved,weightlifting exercise in improving the speed quality. |
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