Introduction: Martial arts demand a high-stability from their athletes, allied to a fast speed in complex movements. These characteristics have been shown to increase in other sports with the strengthening of the abdominal core of their athletes, and it is believed that martial arts practitioners could also benefit from this additional exercise. Objective: Explore the influences of abdominal core strengthening on explosive strength in martial arts athletes. Methods: Twenty martial arts athletes were selected and randomly divided between the experimental and control group. The experimental group did abdominal core strength training associated with traditional physical training, while the control group practiced only traditional physical training. After the experiment, new physical tests were performed, comparing the pre and post results regarding peak torque, explosive strength, and impact explosive strength of martial arts athletes. Results: The relative strike force of the straight fist in the experimental group increased from 25.75 to 31.89 after the experiment; the relative strike force to the lower limbs increased from 37.64 to 47.00 after the experiment (p<0.05). Conclusion: After the executed strength training, the athletes’ extensor peak torque and impact explosive strength indexes were significantly enhanced, evidencing the improvement of the explosive strength of martial arts athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
The industrialization of new energy vehicles has accelerated, and the recycling industry driven by a large number of retired power batteries has exploded rapidly. How to control and deal with decommissioned batteries and balance economic and environmental benefits has become an urgent problem to be solved. Considering the influence of uncertain interference factors, the dynamic equilibrium strategy of power battery closed-loop supply chain members composed of leading manufacturer, recycler, and cascade utilization enterprise was studied. (1) This paper describes the stochastic evolution process of cascade utilization effort level by using Ito process and constructs a stochastic differential game model of closed-loop supply chain dynamic system combined with cost-sharing coordination mechanism. (2) Based on the stochastic differential game theory, the optimal profit function of the participants is given, and the dynamic equilibrium strategy of each participant is obtained. (3) In order to grasp the statistical characteristics of cascade utilization effort level, the random evolution characteristics of cascade utilization effort level are revealed. (4) Combined with numerical example, the influence of relevant parameters on the dynamic system of power battery closed-loop supply chain is analyzed. The results found that with the increase of the proportion of manufacturer sharing the innovation cost of cascade utilization enterprise, the cascade utilization effort level will improve, the profits of cascade utilization enterprise and recycler will increase significantly, the profits of manufacturer will decrease slightly, and the overall profits of the supply chain will increase. The cost-sharing coordination mechanism is conducive to ensuring the steady development of the industry and effectively improving the utilization efficiency of industrial resources.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.