Prediction of weightlifter’s motor behavior to evaluate snatch weightlifting techniques based on a new method of investigation of consumed energy

Rahmati, S.M.A.; Mallakzadeh, Mohammadreza

doi:10.1016/j.humov.2014.08.008

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…Previous researchers have divided the snatch action into six phases, including the first pull, the transition, the second pull, the turnover under the barbell, the catch phase, and the rising from squat position, based on the changes in the direction of knee angle and the height of the barbell [ 2 , 5 , 10 , 11 , 12 ]. The first five phases were considered to be the most important phases of the snatch lift [ 3 , 4 , 5 , 6 ].…”

Section: Methodsmentioning

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

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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.

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Section: Methodsmentioning

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

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Section: алактатная тренировка как фактор повышения эффективности подunclassified

“…Результат в подъеме штанги на грудь в большей степени определяется уровнем максимальной силы и в меньшей степени мощностью движения, чем в рывке, о чем свидетельствуют различия в биомеханических характеристиках [3,20,21,26,32,33]. Результат в толчке штанги от груди определяется мощностью движения [21,32]. Мощность движения в толчке штанги от груди определяется уровнем проявления взрывной силы в фазе амортизации, которая зависит от вклада силы упругой деформации мышц нижних конечностей, которая в свою очередь связана с уровнем максимальной силы [3,28], т. е. от суммарной массы миофибрилл в быстрых и медленных мышечных волокнах (общее количество деформированных акто-миозиновых мостиков) [6].…”

Section: алактатная тренировка как фактор повышения эффективности подunclassified

Alactic Training as Efficiency-Improvement Factor in Elite Weightlifters’ Training

Сивохин¹,

Fyodorov²,

Tapsir³

et al. 2016

HSM

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Aim of research was to provide theoretical and experimental justification of efficiency of alactic training modeling conditions and structure of competitive activity. Materials and Methods. To assess the experimental program efficiency we conducted educational experiment which took 7 months. Experimental and control groups included 10 highly-skilled athletes (Masters of Sport of International Class and Merited Masters of Sport) aged 20-27. The participants were winners and medalists of Asian and World Championships and the Asian and Olympic Games. The experimental group was training according to specially designed experimental program. Conditioning specifics and pharmacologic program were the same for both groups. Results. The results of the experiment showed that the greatest effect of mainly alactic training was observed in barbell clean. This could be associated with long-term adaptation of the participants due to increased power of alactic mechanisms of energy supply and accumulation of myofibril mass (mostly in fast muscle fibers), which influenced the growth of observed strength of muscles at a high rate of their contraction. Conclusion. The obtained information may be used for training process management and correction of training load depending on the individual performance in clean and jerk.

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“…Esta já foi estabelecida por Vorobyev (Vorobyev, 1978), que identificou que existem 3 tipos mais comuns de execução (figura 3) e que é aceita e utilizada pela comunidade de treinadores e esportistas (Antoniuk & Bogdan, 2017;Baumann. et al, 1988;K Kipp & Harris, 2015;Lenjannejadian & Rostami, 2008;Rahmati & Mallakzadeh, 2014). Na representação de Vorobiev existem 3 tipos de trajetórias identificadas, acompanhadas por uma linha vertical que é a projeção da linha de gravidade da barra no início do movimento.…”

Section: Trajetória Da Barraunclassified

“…Sob sua prática, têm sido reconhecidas influências positivas na composição corporal e na aptidão física (Meyer, Morrison, & Zuniga, 2017 (Vorobyev, 1978), onde a barra descreve uma "S" estendida, observada sempre desde o plano sagital do executante, e é utilizada até o presente pela comunidade esportiva de atletas e treinadores (Antoniuk & Bogdan, 2017;Baumann. et al, 1988;K Kipp & Harris, 2015;Lenjannejadian & Rostami, 2008;Rahmati & Mallakzadeh, 2014 Chiu & Schilling, 2005), sendo a mais notável o aumento da coordenação e ativação de grupos musculares e unidades motoras Hakkinen, Komi, & Kauhanen, 1986;Lehr, T., 1979 (Kauhanen, Komi, & Hakkinen, 2002;Zatsiorsky & Kraemer, 2006). O Snatch (Arranco) é um dos dois levantamentos que caracterizam eventos de LPO e que junto ao Clean and Jerk (Arremesso) tem como objetivo levar a barra do chão até acima da cabeça (Baumann.…”

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Análise comparativo da execução técnica do Levantamento de Peso Olímpico entre praticantes com e sem experiência

Noriega¹

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Antes de todo a Deus e a Nossa Senhora: que diante de todas as dificuldades trouxeram pessoas, momentos ou criaram situações que de alguma forma me auxiliaram nesses instantes. Ao Professor Arturo Forner Cordero, meu orientador. Com seu exemplo, a minha aprendizagem não se limitou ao Doutorado, mas também ao humano. Obrigado pelo convívio, ajuda, paciência e amizade nestes anos. Meu eterno obrigado, respeito e consideração para você, Mestre. À CAPES, pelo apoio financeiro. Aos membros do Laboratório de Biomecatrônica com os que comparti esses anos: Luis, Milton, Rafael, Guilherme, Leonardo, Cauê. E em especial nesta fase final ao meu amigo João Pinho: caro, você foi demais. Aos voluntários que participaram deste estudo, que durante 6 semanas tiveram que abrir mão do seu tempo e chegar a tempo para os treinamentos e testes e com quem formamos laços de amizade. A toda a minha família que acompanhou e torceu por mim neste tempo todo, seja com palavras motivadoras, com mensagens, com orações, e que ficaram, devido à minha ausência, sacrificando momentos valiosos: meu irmão Galo, meus pais Galo e Maruja, meus pais no coração, Paulo e Magna. A Rô, sei dos sacrifícios que teve que fazer neste tempo todo pelas minhas ausências físicas e mentais. No difícil que foi criar o entorno para me apoiar nesta reta final. Muito obrigado pelo amor, carinho, compreensão e paciência. Todo meu reconhecimento para você, Preciosa. AbstractThe performance of an athlete is directly related to the development of muscular power, this being the main characteristic of the Olympic Weightlifting (OW) practitioners. Hence their use in different training plans in order to improve performance and muscular power. The OW movements recruit the largest muscle groups and require intense physical effort performed with emphasis on speed and technique. Speed, coordination, levels of muscular coactivation are characteristic of the movements of the Olympic Weightlifting themselves and are acquired and improved over time. Power Snatch (PS) is a movement derived from the Snatch, considered as one of the most difficult movements to perform due to its technical complexity. The PS is used in different sports modalities in order to increase athletic performance. Previous studies have recorded kinematic data and/or electromyographic measurements, but these studies were limited to elite athletes. The present study investigated the kinematic patterns and muscular activities that represent the technical execution of the PS, referred by an optimal trajectory observed from the sagittal plane of the performer. Nineteen volunteers participated in the study, 11 subjects were trained (GT) for 6 weeks and every two weeks the kinematic and muscle activity variables were recorded. 8 specialists in ow training (GE) participated to register their technical executions. The PS was divided into 6 phases, represented by 48 variables that involve the kinematic analysis for each subject divided into 3 sessions. 16 variables represented GE trajectory data. 8 muscles, corresponding to ...

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Prediction of weightlifter’s motor behavior to evaluate snatch weightlifting techniques based on a new method of investigation of consumed energy

Cited by 9 publications

References 12 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

Alactic Training as Efficiency-Improvement Factor in Elite Weightlifters’ Training

Análise comparativo da execução técnica do Levantamento de Peso Olímpico entre praticantes com e sem experiência

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