Study on the Effect of PNF Method on the Flexibility and Strength Quality of Stretching Muscles of Shoulder Joints of Swimmers

Q4 Biochemistry, Genetics and Molecular Biology

Molecular & Cellular Biomechanics Pub Date : 2021-01-01 DOI:10.32604/MCB.2021.014748

Boqing Li, X. Bai, Yongli Zhu

引用次数: 5

Abstract

In the process of swimming, the shoulder joint will be damaged when the arm is stroking. To reduce the injury of shoulder joints and improve the speed of stroke, it is necessary to train the flexibility of shoulder joints. This paper briefly introduced the concept of shoulder joint and flexibility and then explained the traditional stretching training method and proprioceptive neuromuscular facilitation (PNF) stretching method. Then, taking 20 college team swimmers of Yunnan University as the subjects, the comparative experiment of the traditional and PNF stretching methods was carried out. The results showed that the shoulder rotation index of the athletes after the use of the PNF stretching method was significantly lower compared with the traditional stretching method; under the PNF stretching method, the average power and total work of shoulder joints significantly improved in the highspeed external rotation, and the performance in the 50 m freestyle also significantly improved.

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PNF法对游泳运动员肩关节拉伸肌柔韧性和力量质量影响的研究

在游泳过程中，手臂的划动会损伤肩关节。为了减少对肩关节的损伤，提高划水速度，必须对肩关节的柔韧性进行训练。简要介绍了肩关节和柔韧性的概念，阐述了传统的拉伸训练方法和本体感觉神经肌肉促进(PNF)拉伸方法。然后，以云南大学20名大学生游泳运动员为研究对象，对传统拉伸法和PNF拉伸法进行了对比实验。结果表明:运动员采用PNF拉伸方法后的肩关节旋转指数明显低于传统拉伸方法;在PNF拉伸法下，高速外旋时肩关节的平均发力和总功明显提高，在50米自由泳中也有明显提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Molecular & Cellular Biomechanics CELL BIOLOGYENGINEERING, BIOMEDICAL&-ENGINEERING, BIOMEDICAL

CiteScore

1.70

自引率

0.00%

发文量

期刊介绍： The field of biomechanics concerns with motion, deformation, and forces in biological systems. With the explosive progress in molecular biology, genomic engineering, bioimaging, and nanotechnology, there will be an ever-increasing generation of knowledge and information concerning the mechanobiology of genes, proteins, cells, tissues, and organs. Such information will bring new diagnostic tools, new therapeutic approaches, and new knowledge on ourselves and our interactions with our environment. It becomes apparent that biomechanics focusing on molecules, cells as well as tissues and organs is an important aspect of modern biomedical sciences. The aims of this journal are to facilitate the studies of the mechanics of biomolecules (including proteins, genes, cytoskeletons, etc.), cells (and their interactions with extracellular matrix), tissues and organs, the development of relevant advanced mathematical methods, and the discovery of biological secrets. As science concerns only with relative truth, we seek ideas that are state-of-the-art, which may be controversial, but stimulate and promote new ideas, new techniques, and new applications.