Introduction: Shuttlecock is a popular sport in China. Its level of competition depends on the athlete's body shape, strength, technique, tactics, and mentality, among other factors that require the mastery of the shuttlecock with all body parts except the hands. The physical preparation for this sport requires the explosive strength of specific muscles for its total domination. Objective: To explore the changes in explosive muscle strength in shuttlecock players after short-term physical training. Methods: College students in two shuttlecock elective classes were selected as volunteers for the research. The experiment divided the two classes into experimental and control groups. The conventional training method was used in the control group. The experimental group used a combination of a physical and routine training protocol. The groups were tested for fitness before and after the experimental intervention. The data obtained were statistically analyzed and discussed. Results: The experimental group's specific muscle strength and explosive power after physical training were better than the control groups. The scores of the experimental and control groups were significantly different in terms of physical flexibility, the number of kicks, and motor skill assessment (P<0.05). There was no statistical significance in the number of push-ups between the two groups (P>0.05). Conclusion: Physical training significantly affects the physical quality of college students and their number of shots. Physical training is essential to improve shuttlecock practitioners’ muscular strength and explosive power. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

Introduction: Currently, compound rapid stretching training has been explored by sports researchers. However, most research focuses on soccer, basketball, volleyball, and other sports that require vertical jump fitness, but little attention is paid to badminton. Objective: Study the influence of compound rapid stretching training on fitness in professional badminton athletes. Methods: By experimental and statistical methods, 16 outstanding college badminton players were randomly divided into composite training and control groups. The sports performance test (T-shaped run) and short-distance mobility test (5-10-5), were evaluated and compared before and after the intervention, adding a specific rapid stretching training protocol to the composite group. Results: Comparatively, the T-run and hexagonal jump tests were significantly improved in the composite group (P<0.01). The time required to complete the 5-10-5 moving test progressed from 3.980s to 3.763s, significantly longer than the control group (P<0.05). Conclusion: 6-week training with rapid stretching was shown to significantly improve the fitness of college badminton athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.