Effects of High-Intensity Interval Training on Physical Fitness, Skills, and Tactical Performance, 12 Weeks High-Intensity Interval Training

This clinical trial aims to compare the difference between high-intensity interval training and common traditional training on physical fitness, skills, and tactical performance among college ice hockey players in China. The main questions it aims to answer are: * 1. How does high-intensity interval training affect the physical fitness of college ice hockey players? * 2. How does high-intensity interval training affect the skills of college ice hockey players? * 3. How does high-intensity interval training affect the tactical performance of college ice hockey players? Participants will be asked to do 12 weeks of high-intensity interval training and common traditional training to see if there are differences between the two and the positive effects of high-intensity interval training.