Chinese Journal of Tissue Engineering Research ›› 2025, Vol. 29 ›› Issue (18): 3784-3790.doi: 10.12307/2025.681

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Immediate effects of different stretching methods on knee joint muscle strength and vertical jump performance of healthy adults

Zhao Yuhan1, Li Yamei2, Yan Shifang1, Jiang Huabei1   

  1. 1Hebei Sport University, Shijiazhuang 050000, Hebei Province, China; 2Hebei University of Chinese Medicine, Shijiazhuang 050299, Hebei Province, China
  • Received:2024-06-17 Accepted:2024-08-05 Online:2025-06-28 Published:2024-11-27
  • Contact: Jiang Huabei, PhD, Associate professor, Hebei Sport University, Shijiazhuang 050000, Hebei Province, China
  • About author:Zhao Yuhan, MS, Lecturer, Hebei Sport University, Shijiazhuang 050000, Hebei Province, China
  • Supported by:
    Sports Science and Technology Research Project of Hebei Provincial Sports Bureau, No. 2024QT05 (to ZYH)

Abstract: BACKGROUND: Static stretching effectively improves joint motion amplitude, dynamic stretching effectively improves muscle strength and athletic performance through the post-activation strengthening effect of the muscles.
OBJECTIVE: To explore the immediate effects of different stretching methods on knee joint muscle strength and vertical jump performance, and provide theoretical support for seeking the best stretching plan, improving sports performance, and preventing training injuries. 
METHODS: Thirty healthy college students were randomly recruited. The Biodex isokinetic muscle strength system, Qualisys infrared motion capture system, and AMTI three-dimensional force measurement platform were used to collect knee joint muscle strength and vertical jump data after static quadriceps/hamstring stretching, dynamic quadriceps/hamstring stretching, dynamic quadriceps/ static hamstring stretching, and static quadriceps/dynamic hamstring stretching. The peak torque, average power, vertical jump height, peak vertical ground reaction force, and joint motion amplitude of the knee joint were used to evaluate the muscle strength and vertical jump performance of the knee joint. 
RESULTS AND CONCLUSION: Compared with the static quadriceps/hamstring stretching, dynamic quadriceps/hamstring stretching significantly increased knee joint peak torque, average power, and vertical jump height (P < 0.05); dynamic quadriceps/static hamstring stretching and static quadriceps/dynamic hamstring stretching significantly increased knee extension and flexion peak torque and average power (P < 0.05). Compared with static quadriceps/hamstring stretching, second peak vertical ground reaction force significantly decreased after static quadriceps/dynamic hamstring stretching (P < 0.05); lower limb joint motion amplitude significantly increased after dynamic quadriceps/hamstring stretching (P < 0.05). These findings indicate that immediate agonists/antagonistic muscle dynamic stretching and agonists dynamic stretching/antagonistic muscle static stretching significantly improve knee joint muscle strength, vertical jump performance, and joint motion amplitude. A larger joint motion amplitude is beneficial for improving athletic performance and better absorbing ground impact during landing. At the same time, agonists muscle dynamic stretching/antagonistic muscle static stretching is better than agonists/antagonistic muscle dynamic stretching to improve knee joint muscle strength, and agonists muscle static stretching/antagonistic muscle dynamic stretching is beneficial for improving the energy absorption capacity during vertical jumping and reducing the risk of injury during landing. 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

Key words: dynamic stretching, static stretching, agonist muscle, antagonistic muscle, knee joint isokinetic muscle strength, vertical jump, tissue engineering construction


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