While prior research indicates the efficacy of High-Intensity Functional Training (HIFT) in improving physical fitness and skill performance across various sports , its effects on Wushu routine athletes still need to be determined. This study aims to explore the impact of high-intensity functional training on the physical fitness and jumping difficulty of Wushu routine athletes, providing valuable insights for coaches and athletes to optimize training plans. Coaches or sports researchers can use this knowledge to manage the training load of athletes better, thereby helping Wushu athletes achieve better results in Wushu jumping difficulty movements training.

In this study, the intervention design part of the researchers referred to Greg Glassman's (2010) "CrossFit training guide" and designed a high-intensity functional training program based on the characteristics of wushu routines . This study employs a Cluster Randomized Controlled Trial (CRCT) design. The experimental period of this study is 12 weeks, three times per week. The training lasts 1.5 hours, including one hour of physical fitness training and half an hour of specialized technical training. The sample for this study is male Wushu routine athletes from the Hebei Institute of Physical Education and Hebei Normal University, with 60 participants. Athletes were randomly assigned to two different training locations and divided into experimental and control groups. The specialized skills training content of the two groups is the same, with the only difference being the physical training part. The experimental group received high-intensity functional training, while the control group maintained routine training. In addition, the specific content of routine training for the control group is the school's standard training plan. The dependent variables to be measured in this study are physical fitness (strength, power, speed, endurance, and flexibility) and jumping difficulty movements (Flying Kick, Whirl Wind Kick, Outward Leg Swing in Flight, and Side Somersaults). This study measured the dependent variable three times throughout the intervention: baseline before the experimental intervention, post-test 1 after 6 weeks, and post-test 2 after 12 weeks. Finally, statistical analysis was conducted on the three test results.

Inclusion Criteria:

• Male.
• Aged 18-23 years old.
• Health.
• No experience of high-intensity functional training.

Exclusion Criteria:

• Athletes with physical surgery.
• Have high-intensity functional training experience.

In order to avoid mutual interference between the experimental group and the control group, a blinding method needs to be used in the study. In this study, a single blind experiment will be conducted to blind the participating athletes. During the sample grouping process, participating athletes will not know the specific grouping situation.