Reaction time and muscle activation patterns in elite and novice athletes performing a taekwondo kick

Ervilha, Ulysses Fernandes; Fernandes, Fernando de Moraes; Souza, Camila Carvalho de; Hamill, Joseph

doi:10.1080/14763141.2018.1515244

Cited by 20 publications

(17 citation statements)

References 20 publications

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“…Therefore, strong, powerful hip flexors will generate more effective kicks. This finding is to be expected, because during the kicking phase, the dominant lower limb is free (off the ground) and unconstrained, reducing inertial resistance (inertial moment) against muscle action [ 46 ]. According to classical equations of mechanics (Eqs 9 – 11 ), this increases the ability of the hip flexors to produce velocity with a given muscle force.…”

Section: Discussionmentioning

confidence: 97%

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Are isokinetic leg torques and kick velocity reliable predictors of competitive level in taekwondo athletes?

et al. 2021

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The aim of this study is to analyze how isokinetic knee and hip peak torques and roundhouse kick velocities are related to expertise level (elite vs. sub-elite) in taekwondo athletes. Seven elite and seven sub-elite athletes were tested for kick-specific variables (KSV, composed of kinematic variables and power of impact) and for concentric isokinetic peak torque (PT) at 60°/s and 240°/s. First, KSVs and PTs were compared between groups, then PTs were correlated with KSVs. Parametric variables with larger effect sizes (Cohen’s d) were entered in a stepwise linear discriminant analysis (LDA), generating an equation to estimate competitive level. Between-group differences were found in hip flexors (p = 0.04, d = 0.92) and extensors (p = 0.04, d = 0.96) with PT at 240°/s. Hip flexion PT at 60°/s and 240°/s correlated negatively with kick time (R = –0.46, p = 0.0499 and R = –0.62, p = 0.01 respectively). Hip flexion torque at 60°/s correlated positively (R = 0.52, p = 0.03) with peak linear velocity of the foot (LVF) and power of impact (R = 0.51, p = 0.03). Peak torque of hip extension at 60°/s and hip abduction at 240°/s also correlated with LVF (R = 0.56, p = 0.02 and R = 0.46, p = 0.0499). Hip extension at 60°/s correlated positively with peak linear velocity of the knee (R = 0.48, p = 0.04). The LDA showed an accuracy of 85.7% (p = 0.003) in predicting expertise level based on hip flexion and extension torques at 240°/s and on knee extension velocity during the kick. The study demonstrates that hip muscle strength is probably the dominant muscular factor for determining kick performance. Knee angular velocity combined with hip torques is the best discriminator for competitive level in taekwondo athletes.

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Section: Discussionmentioning

confidence: 97%

“…Additionally, during most of the kicking time, the hip flexes simultaneously with the knee, reducing the moment of inertia [ 46 ]. This appears to be a reasonable explanation for why the value of the coefficient of correlations between kicking time and hip isokinetic moment in the modulus was higher at 240°/s than at 60°/s.…”

Section: Discussionmentioning

confidence: 99%

Are isokinetic leg torques and kick velocity reliable predictors of competitive level in taekwondo athletes?

et al. 2021

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“…With opto-electronic measuring systems a common way of analysis is by determining proximal-to-distal movement sequences (PDMS) that facilitate the transfer of momentum from larger to smaller segments of the kinematic chain to increase the velocity of the latter and ultimately the power output. Most power generation analyses focused on single movements (Ervilha et al, 2018;Kim et al, 2011;Pozo et al, 2011). PDMS has been successfully applied to Martial Arts punches (Fuchs et al, 2017) and rear-leg kicks (Kim et al, 2011;Sorensen et al, 1996) but surprisingly front-leg actions were never considered.…”

Section: Martial Arts Kicking Techniquesmentioning

confidence: 99%

Sequential action, power generation and balance characteristics of a martial arts kick combination

Hoelbling

Baca

Dabnichki

2020

International Journal of Performance Analysis in Sport

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This paper presents a kinematic analysis of a kick combination action: Commonly performed, functional motion sequences are identified and, focusing on balance and sequential action characteristics, a classification of different kicking patterns of Pointfighting Martial Arts athletes is suggested. Vicon® motion analysis system was used to record 28 participants' double side kick execution. Fighters were divided into groups determined by their highest tournament achievements (national and international athletes). A comprehensive biomechanical model was developed expanding on an existing functional phase model solely derived from the kicking leg motion. Supporting leg and thorax motion phases were added. Appropriate variables were defined and obtained to characterise balance and sequential kick action. The statistical analysis established that (a) better techniques are characterised by less directly supported dynamic balance conditions and (b) there is a clear proximal-to-distal sequence (PDMS) for each kick movement, whereby better fighters create more hip-abduction angular change and higher angular velocities at PDMS1 and more angular velocity during the knee extension of the second PDMS. Results indicate that better fighters show a higher variety in dynamic balance conditions, as well as a stronger focus in the first leg abduction and their second leg extension.

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“…Dolyo chagi merupakan tendangan yang mengutamakan lecutan dari lutut dan putaran pinggang untuk menambah hasil yang maksimal. Tendangan yang baik merupakan tendangan yang mampu dikontrol dengan baik serta mampu menyajikan keccepatan sudut lutut yang lebih tinggi (Ervilha, Fernandes, Souza, & Hamill, 2018). Dalam tendangan dolyo chagi ini pada dasarnya menggunakan pula bantalan telapak kaki (Ap Chuk), namun sangat sering pula menggunakan baldeung (punggung kaki), terutama jika digunakan dalam pertandingan.…”

Section: Pendahuluanunclassified

“…Dengan kata lain kemampuan gerak yang tinggi memiliki dampak yang sangat baik terhadap peningkatan keterampilan tendangan dolyo chagi dalam taekwondo. Hal lain juga di sampaikan dalam penelitian terdahulu bahwa tendangan dalam taekwondo dipengaruhi oleh waktu reaksi dan pola aktivitas otot (Ervilha et al, 2018 baik dalam taekwondo perlu memperhatikan pola aktivitas otot yang dominan dan waktu reaksi dalam merespon stimulus yang datang. Sehingga semakin tinggi kemampuan gerak seseorang maka semakin cepat respon pemahaman dan keterampilan yang dipelajari oleh seseorang.…”

Section: Hasil Dan Pembahasanunclassified

The Effect of Motor Ability Level on Taekwondo Kick Learning Outcome through Reciprocal Teaching Style

Juniar

2019

PENJAS

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Tujuan dari penelitian ini adalah untuk mengetahui pengaruh gaya mengajar resiprokal dan motor ability tinggi terhadap hasil tendangan dolyo chagi. Metode yang digunakan pada penelitian ini adalah metode eksperimen. Pengambilan sampel yang penulis gunakan dengan cara acak sederhana (random assignment). Hasil dari penelitian ini adalah terdapat pengaruh yang signifikan gaya mengajar resiprokal untuk mahasiswa yang memiliki motor ability tinggi terhadap hasil belajar tendangan dolyo chagi (thit.=12,77 > ttab. 3,63). Hal itu disebabkan oleh karena mahasiswa yang memiliki motor ability tinggi mampu belajar secara cepat dalam menguasai teknik-teknik dasar tendangan dolyo chagi taekwondo, karena pola pembelajaran tidak lagi dikontrol oleh dosen, melainkan tergantung pada diri mahasiswa sendiri. Semakin tinggi semangat belajar yang dapat mereka tunjukkan, maka semakin besar peluang keberhasilan yang mereka peroleh.The porpose of this research was to determine the effect of reciprocal teaching style and high motor ability on the results of dolyo chagi kicks. The method used in this research is the experimental method. Sampling that the author uses in a simple random way (random assignment). The result of this research is that there is a significant influence on reciprocal teaching style for students who have high motor ability towards learning outcomes of dolyo chagi kick (thit.=12,77 > ttab. 3,63). This is because students who have high motor abilities are able to learn quickly in mastering the basic techniques of dolyo chagi taekwondo kicks, because the learning pattern is no longer controlled by the lecturer, but depends on the students themselves. The higher the enthusiasm for learning that they can show, the greater the chances of success they get.

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Reaction time and muscle activation patterns in elite and novice athletes performing a taekwondo kick

Cited by 20 publications

References 20 publications

Are isokinetic leg torques and kick velocity reliable predictors of competitive level in taekwondo athletes?

Are isokinetic leg torques and kick velocity reliable predictors of competitive level in taekwondo athletes?

Sequential action, power generation and balance characteristics of a martial arts kick combination

The Effect of Motor Ability Level on Taekwondo Kick Learning Outcome through Reciprocal Teaching Style

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