Comparison of the Snatch Technique for Female Weightlifters at the 2008 Asian Championships

Ikeda, Yusuke; Jinji, Tsutomu; Matsubayashi, Takeo; Matsuo, Akifumi; Inagaki, Eiichi; Takemata, Toshiro; Kikuta, Miyoji

doi:10.1519/jsc.0b013e318225bca1

Cited by 29 publications

(30 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The technique of top-elite athletes represents the best performance, and can be considered as excellent technical model or a reference that should be achieved. Previous studies of snatch performance focused mainly on the differences in adult female weightlifters [ 1 , 7 , 8 ], between adult and adolescent males [3] , and between genders [ 4 , 9 , 10 ]. They analyzed the kinematic and kinetic parameters by two or three-dimensional methods.…”

Section: Introductionmentioning

confidence: 99%

Comparative 3-dimensional kinematic analysis of snatch technique between top-elite and sub-elite male weightlifters in 69-kg category

Liu

Fekete

Yang

et al. 2018

Heliyon

View full text Add to dashboard Cite

ObjectiveThe purpose of this study was to determine the differences in technical characteristics between top-elite and sub-elite male weightlifters performing the snatch style in the 69-kg category. The obtained results can provide valuable information for lower level lifters and coaches to achieve better competition performance by altering their training methods accordingly.MethodsSix top-elite and six sub-elite weightlifters participated in this study. The heaviest successful snatch lift from the three attempts of each subject was analyzed. The video data were recorded under competition conditions at China National Weightlifting Championship and China Olympic Trial, which were analyzed by SIMI°Motion7.50 3D analysis system.ResultsThe results showed that the maximum vertical- and relative vertical height (normalized by athletes' height) of the barbell, the maximal vertical linear velocity and acceleration of the barbell were significantly greater in top-elite lifters (p < 0.05). In addition, the flexion angles of the knee joint were significantly greater in top-elite lifters during the first phase and the third phase of the snatch lift. Sub-elite lifters showed less flexion and significantly slower angular velocity in knee joint than top-elite lifters during the second phase of the snatch lift (p < 0.05).ConclusionThe findings of the present study demonstrated the differences in technical characteristics between the two levels. According to these findings, coaches of sub-elite lifters should focus on exercises suitable to the strength characteristics of the first and the third phase of the snatch lift. In addition, the flexor muscles of knee joint among the sub-elite lifters should be strengthened and the ability of generating and utilizing elastic energy during the second phase of the snatch lift should be improved.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative 3-dimensional kinematic analysis of snatch technique between top-elite and sub-elite male weightlifters in 69-kg category

Liu

Fekete

Yang

et al. 2018

Heliyon

View full text Add to dashboard Cite

show abstract

“…As suggested in coaching literature (14,23,27,36,44,45,47) and confirmed through kinematic analysis performed with elite weightlifters (28,29,32), proficiency in the above-knee HPC start position is characterized by a mid-to reardirected COP, with the shoulders "covering the bar" as viewed from the sagittal plane. Hip (42,48,55) and ankle (42,47,48) angles tend to approach a right angle, and knee angles tend to be obtuse and between 1458 and 1558 (35,47,55).…”

Section: Discussionmentioning

confidence: 64%

“…Criterion angles for each joint at PEAK EXT have not been established and are hotly debated in both weightlifting and strength and conditioning circles with some coaches advocating full "triple extension" (6,21,33,44,45) and others preferring more acute angles across some or all lower-body joints (28,29,32,47,48). Although the benefits of maximizing impulse would support triple extension as the criterion, various analyses with elite weightlifters tend to discount the maximization of plantar flexion (27,28,47) in proficient HPC mechanics.…”

Section: Discussionmentioning

confidence: 99%

Learning the Hang Power Clean

Haug

Drinkwater

Chapman

2015

Journal of Strength and Conditioning Research

View full text Add to dashboard Cite

The investment in learning required to reach benefit with weightlifting training is currently not well understood in elite athletes. The purpose of this investigation was to quantify changes in vertical jump power production and kinematic variables in hang power clean (HPC) performance during the learning process from a naive state in a multiple single-subject research design. Four elite athletes undertook HPC learning for approximately 20-30 minutes twice per week over a 169-day period. Changes in parameters of vertical power production during squat jump (SJ) and countermovement jump (CMJ) were monitored from baseline (day 0) and at 3 additional occasions. Hang power clean movement kinematics and bar path traces were monitored from day 35 and at 3 additional occasions particular to the individual's periodized training plan. Descriptive statistics were reported within athletes as mean ± SD. We observed a 14.1-35.7% (SJ) and a -14.4 to 20.5% (CMJ) gain in peak power across the 4 jump testing occasions with improvements over the first 4 weeks (SJ: 9.2-32.6%; CMJ: -2.91 to 20.79%). Changes in HPC movement kinematics and barbell path traces occurred for each athlete indicating a more rearward-directed center of pressure over the concentric phase, greater double knee bend during the transition phase, decreased maximal plantar flexion, and minimal vertical displacement of body mass with HPC learning. Considering the minimal investment of 4 weeks to achieve increases in vertical power production, the benefits of training with HPC justified the associated time costs for these 4 elite athletes.

show abstract

“…These variables were selected because they are commonly used indicators of weightlifting technique (2,7,11,12,15,17,24). Additional, but less commonly used variables were also analyzed (Tables 2 and 3).…”

Section: Experimental Approach To the Problemmentioning

confidence: 99%

Enhancing Digital Video Analysis of Bar Kinematics in Weightlifting: A Case Study

Dæhlin

Krosshaug

Chiu

2017

Journal of Strength and Conditioning Research

View full text Add to dashboard Cite

Dæhlin, TE, Krosshaug, T, and Chiu, LZF. Enhancing digital video analysis of bar kinematics in weightlifting: a case study. J Strength Cond Res 31(6): 1592–1600, 2017—Weightlifting technique can be objectively assessed from two-dimensional video recordings. Despite its importance, participants' bar trajectories in research involving the snatch or clean exercises are often not reported, potentially due to the time required to digitize video. The purpose of this investigation was to evaluate the use of a light-emitting diode (LED)-based marker, digital video, and open-source software to automatically track the bar end during weightlifting exercises. A former national-level weightlifter was recorded with a digital video camera performing the snatch, clean and jerk, and squat exercises. An LED-based marker was placed on the right end of the bar. This marker was automatically tracked using 2 open-source software programs to obtain vertical and horizontal position coordinates. The LED-based marker was successfully auto-tracked for all videos over a variety of camera settings. Furthermore, the vertical and horizontal bar displacements and vertical bar velocity were consistent between the 2 software programs. This study demonstrates that an LED-based marker can be automatically tracked using open-source software. This combination of an LED-based marker, consumer camera, and open-source software is an accessible, low-cost method to objectively evaluate weightlifting technique.

show abstract

Comparison of the Snatch Technique for Female Weightlifters at the 2008 Asian Championships

Cited by 29 publications

References 7 publications

Comparative 3-dimensional kinematic analysis of snatch technique between top-elite and sub-elite male weightlifters in 69-kg category

Comparative 3-dimensional kinematic analysis of snatch technique between top-elite and sub-elite male weightlifters in 69-kg category

Learning the Hang Power Clean

Enhancing Digital Video Analysis of Bar Kinematics in Weightlifting: A Case Study

Contact Info

Product

Resources

About