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Effects of Gua Sha therapy on Weightlifting training: a randomized trial

Journal of Traditional Chinese Medicine 2019年第4期39卷 575-581页

作者： Wang Xingze Jia Baohui Zhong Houyong Huang Xingyu Chen Rong Yang Jinsheng School of Physical Education and Training Shanghai University of SportShanghai200438China Department of Acupuncture Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing 100053China Research Center of Physical Education and Health Education in Gannan Normal University Ganzhou CityJiangxi Province 341000China Department of Internal Medicine The 8th Medical Center of Chinese PLA General Hospital Xiao Xitian ClinicBeijing 100082China Institute of Acupuncture and Moxibustion China Academy of Chinese Medical SciencesBeijing 100700China

OBJECTIVE: To evaluate the effect of Gua Sha therapy on Weightlifting training.METHODS: The sample size was calculated by conducting a pilot study. A total of 44 male weightlifters were randomly assigned to either the Gua Sha group(n = 15), sham scraping group(n = 14), or control group(n = 14). The participants in the Gua Sha group and sham scraping group received 16 sessions of Gua Sha therapy during normal Weightlifting training for 8 weeks. No treatment was applied to participants in the control group. The effectiveness of Gua Sha therapy was evaluated by measuring Weightlifting ability, the rating of perceived exertion(RPE) of snatch and clean and jerk(85% of1 repetition maximum), and creatinine kinase(CK),blood urea nitrogen(BUN), and immunoglobulin A levels.RESULTS: Gua Sha therapy treatment significantly increased Weightlifting ability in participants in the Gua Sha group(P Weightlifting ability, reduce the RPE, and inhibit muscle injury by promoting recovery from fatigue caused by normal Weightlifting training. Gua Sha therapy could be an effective treatment to complement normal Weightlifting training.

关键词： Gua Sha therapy Weightlifting Creatine kinase Blood urea nitrogen Immunoglobulin A Perceived exertion

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A Wavelet-Based Method to Predict Muscle Forces From Surface Electromyography Signals in Weightlifting

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Journal of Bionic Engineering 2012年第1期9卷 48-58页

作者： Gaofeng Wei Feng Tian Gang Tang Chengtao Wang Institute of Medical Equipment China Academy of Military Medical Science Tianjin 300161 P. R. China Logistics Engineering College Shanghai Maritime University Shanghai 200135 P. R. China Department of Mechanical Engineering Shanghai Jiaotong University Shanghai 200240 P. R. China

The purpose of this study was to develop a wavelet-based method to predict muscle forces from surface electromyography （EMG） signals in vivo. The Weightlifting motor task was implemented as the case study. EMG signals of biceps brachii, triceps brachii and deltoid muscles were recorded when the subject carried out a standard Weightlifting motor task. The wavelet-based algorithm was used to process raw EMG signals and extract features which could be input to the Hill-type muscle force models to predict muscle forces. At the same time, the musculoskeletal model of subject＇s Weightlifting motor task was built and simulated using the Computed Muscle Control （CMC） method via a motion capture experiment. The results of CMC were compared with the muscle force predictions by the proposed method. The correlation coefficient between two results was 0.99 （p〈0.01）. However, the proposed method was easier and more efficiency than the CMC method. It has potential to be used clinically to predict muscle forces in vivo.

关键词： wavelet EMG muscle force Weightlifting musculoskeletal motion

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Weightlifting Motion Generation for a Stance Robot with Repeatedly Direct Kinematics

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Intelligent Control and Automation 2010年第1期1卷 20-27页

作者： Jining Liu Yoshitsugu Kamiya Hiroaki Seki Masatoshi Hikizu Division of Innovative Technology and Science Kanazawa University

This research focuses on how to control the robot easily and how to generate the better trajectories of the robot with multiple joints to implement Weightlifting motion. The purpose of this research is to develop a multijoint robot can stand up successfully with an object. This research requires the operations with two items. First, when the object is lifted up slowly, the robot could stand up as easily as possible and does not tumble down. Second, the load applied on each joint should be as small as possible. In this article, a motion control method is proposed to evaluate the variations of the load torque and rotated angle of each joint with the geometrical constraints in the procedure and find the best algorithm to generate the trajectory of a Weightlifting motion by a stance robot with repeatedly direct kinematics.

关键词： Weightlifting Trajectory Generation Load Torque Repeatedly Direct Kinematics

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举重训练对肌纤维数量影响初探

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中国运动医学杂志 1987年第3期 150-152+191-192页

作者：陶心铭朱为模上海体育学院生理教研室

对29名举重运动员10周短期举重训练表明,训练不会使肌纤维数量增加,多年训练(6～8年)亦未见对肌纤维数量与对照组和短期训练组存在差别。

关键词： number of muscle fibres Weightlifting CT type and area of muscle fibres

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Acute Post-Activation Potentiation Effects of Heavy High-Pulls on Clean Performance

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Journal of Science in Sport and Exercise 2019年第3期1卷 257-263页

作者： Marisa K.Straughn Christopher C.Dake Ludmila M.Cosio-Lima Cameron D.Addie Kyle B.Rank Sarai D.Flores Lee E.Brown Department of Movement Sciences and Health University of West Florida11000 University ParkwayPensacolaFL 32514USA

Aim The concept of post-activation potentiation(PAP)is still novel from a training perspective and lacks breadth relative to Weightlifting exercises.Purpose The purpose of this study was to investigate the acute effects of a conditioning activity(clean high pulls)on the performance of a main activity(clean)after the conditioning activity.Methods Eleven volunteers who engaged in Weightlifting(Male=5,Female=6)participated in two different testing ses-sions(experimental vs.control).Baseline measurements were taken following the warm-up.The testing condition was performed and additional measurements were taken at 30 s,2 min,4 min,6 min,8 min,10 min,and 12 min into recovery.A linear position transducer was used to collect peak power,peak velocity,and displacement of the barbell during the clean.Multiple 2×8 repeated measures ANOVAs were used to analyze the data along with a paired samples t test between baseline and"best"values.Results There was no interaction or main effect for condition(P>0.05).However,there was a significant main effect for time(P<0.05)for all variables.The"best"values were significantly(P<0.05)greater than baseline values(peak power:experimental=1354.76 ±521.24 W vs.baseline 1216.03 ±492.30 W;peak velocity:experimental=2.66 ±0.44 m/s vs.baseline 2.50 ±0.44 m/s;displacement:experimental=111.07 ± 12.09 cm vs.baseline 107.01 ± 11.32 cm).Conclusions The findings of this study are in partial agreement with previous literature where the warm-up was probably enough to elicit PAP.Therefore,recommendations for future studies could include utilizing a more elite population and to ensure all potential participants can squat at least 2 x their body weight.

关键词： Weightlifting Cleans Post-activation potentiation GymAware Linear positional transducer

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Annual Preparation of Young Weightlifters

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Journal of Sports Science 2018年第2期6卷 133-136页

作者： Bulku Altin Ikonomi Edison Kapedani Kujtim Sports Department Sports University Tirana 1000 Albania

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Clark Phenomenon" of Physical Efficiency Sportsmen in Major Competitions

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北京体育大学学报 1995年第S2期18卷 83-89页

作者： LI Yiqun Tian Maijiu(29 years old, lecturer)

The term "Clark Phenomenon" refers to unexpected failures of topranking ahletes in major competitions.Top athletes in the 21 - 24th Olympic Games and top six athletes in the 1- 6th National Games of the events of track and field, swimming and Weightlifting weree investigated in this study. Statistic analysis of their achievements in major competitions showed that the "Clark Phenomenon" appeared in about one third of these top athletes. The incidence of "Clark Phenomenon" of the top six athletes was 0. 8%. Discussion was made on the causes that lead to serious "Clark Phenomenon" of Chinese athletes in the Olympic Games. An Evaluation Standard of Normal Performance in Major Competition for the events of track and field, swimming and weightlifing was established.

关键词： Clark Phenomenon" track and field swimming Weightlifting

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