Introduction Aerobics is a combination of strength and beauty. The complexity of its movements is extreme, and it is easy to cause injuries from sports training in its athletes. Objective Analyze the effect of strength training on injury prevention in aerobic gymnastics. Methods The total duration of the experiment was 8 weeks, and the athletes in the experimental group were trained three times a week with the help of teachers in a dedicated strength training program. The exercise principle of the control group was to perform physical strength training based on running. The control group did not have the special protocol intervention. Their scores were collected and compared before and after the intervention. Statistical analysis was performed for scientific appreciation of the collected data. Results The scores on the deep squat, obstacle avoidance, front and back squat, scapular girdle joint flexibility, straight leg raising, stable trunk flexions, and rotational stability tests in the experimental group were all statistically differentiated. However, the control group’s scores had little difference, showing a slight decrease. Conclusion It is recommended to insert the presented program into the conventional aerobic gymnastics training, always with changes that adjust the reality of the athletes’ situation, protecting their physical health and improving their competitive level. Level of evidence II; Therapeutic studies - investigation of treatment results.
Zero and partial gravities (ZPG) increase cardiovascular risk, while the corresponding theoretical foundation remains uncertain. In the article, the ZPG were generated through a rotating frame with two degrees of freedom in combination with the random walk algorithm. A precise 3D geometric configuration of the cardiovascular system was developed, and the Navier-Stokes laminar flow and solid mechanics were used as governing equations for blood flow and the surrounding tissue in the cardiovascular system. The ZPG were designed into governing equations through the volume force term. The computational fluid dynamics’ (CFD) simulations in combination with proper boundary conditions were carried out to investigate the influences of ZPG on the distribution of blood flow velocity, pressure, and shear stress in the cardiovascular system. The findings show that as simulated gravity gradually decreases from 0.7 g to 0.5 g to 0.3 g to 0 g, as opposed to normal gravity of 1 g, the maximum values of blood flow velocity, pressure, and shear stress on the walls of the aorta and its ramification significantly increase, which would lead to cardiovascular diseases. The research will lay a theoretical foundation for the comprehension of the ZPG effect on cardiovascular risk and the development of effective prevention and control measures under the circumstance of ZPG.
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