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  • Open Access


    Study on the Effect of Shoulder Training on the Mechanics of Tennis Serve Speed through Video Analysis

    Wei Jiang1,*, Gang He2

    Molecular & Cellular Biomechanics, Vol.18, No.4, pp. 221-229, 2021, DOI:10.32604/mcb.2021.017050

    Abstract Tennis service is an important part of winning a match. This study analyzed the mechanics of tennis serving speed and divided ten tennis players into two groups. One group carried out conventional training, while the other group carried out auxiliary training on shoulders through elastic band besides conventional training. The actions were photographed by cameras and analyzed. The results showed that the throwing height and hitting point height of the two groups improved after the experiment, and p < 0.05 in the comparison between Groups A and B; the ball deflection angle reduced after throwing, but the improvement More >

  • Open Access


    Vibration-Based Pattern Password Approach for Visually Impaired People

    Suliman A. Alsuhibany*

    Computer Systems Science and Engineering, Vol.40, No.1, pp. 341-356, 2022, DOI:10.32604/csse.2022.018563

    Abstract The pattern password method is amongst the most attractive authentication methods and involves drawing a pattern; this is seen as easier than typing a password. However, since people with visual impairments have been increasing their usage of smart devices, this method is inaccessible for them as it requires them to select points on the touch screen. Therefore, this paper exploits the haptic technology by introducing a vibration-based pattern password approach in which the vibration feedback plays an important role. This approach allows visually impaired people to use a pattern password through two developed vibration feedback: More >

  • Open Access


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

    Boqing Li, Xiaolong Bai, Yongli Zhu*

    Molecular & Cellular Biomechanics, Vol.18, No.2, pp. 99-105, 2021, DOI:10.32604/mcb.2021.014748

    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 More >

  • Open Access


    Synergetic effects of shock waves with polydeoxyribonucleotides on rotator cuff tendon tear in a rabbit model


    BIOCELL, Vol.45, No.3, pp. 527-536, 2021, DOI:10.32604/biocell.2021.014350

    Abstract This work aimed to investigate the synergetic therapeutic effects of polydeoxyribonucleotides (PDRN) combined with extracorporeal shock waves therapy (ESWT) and the effects of the therapy according to ESWT sequences on a chronic traumatic full-thickness rotator cuff tear (RCT) in rabbit models. For this purpose, thirty-two rabbits were randomly allocated into 4 groups. An excision was made to create a 5-mm sized full-thickness RCT right proximal to the insertion site on the supraspinatus. After 6 weeks, 4 different procedures (normal saline, Group 1; PDRN injection, Group 2; PDRN injection before ESWT, Group 3; PDRN injection after… More >

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