ArticlePloS one2021
Are isokinetic leg torques and kick velocity reliable predictors of competitive level in taekwondo athletes?
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
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Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Pooled it
- The effect of medical grade compression garments on the repeated-bout effect in non-resistance-trained men.Experimental physiology · 2023Trial
- Performance-Related and Body Composition Differences Between High and Low-Performing Taekwondo Athletes: An Exploratory Study.Journal of functional morphology and kinesiology · 2026Article
- Investigation of the Relationship Between Core Stability and Reaction Time in Taekwondo Athletes.Journal of musculoskeletal & neuronal interactions · 2026Article
- Range of Motion and Muscle Activity During the Front Kick in Karate Kyokushin.Journal of clinical medicine · 2026Article
- Estimating actual striking forces using attenuation properties of Taekwondo protectors.PloS one · 2026Article
- A comparing the strength of taekwondo turning and side kicks in relation to athletes' gender, body weight and height.Scientific reports · 2025Article
- Assessing the Reliability of a Combat Sports Kick-Time Device.Sensors (Basel, Switzerland) · 2025Article
- A meta-analysis of the effects of plyometric training on muscle strength and power in martial arts athletes.BMC sports science, medicine & rehabilitation · 2025Article
- Lower-limb surface electromyographic differences in roundhouse kicks between elite and sub-elite taekwondo athletes: a functional principal component analysis.Frontiers in physiology · 2025Article
- Isokinetic muscle function, dynamic balance, and injury risk in dominant and non-dominant lower extremities of adolescent taekwondo athletes.Frontiers in sports and active living · 2025Article
- Torque and power of knee extensor muscles at individualized isokinetic angular velocities.The Journal of international medical research · 2024Article
- Impact Force and Velocities for Kicking Strikes in Combat Sports: A Literature Review.Sports (Basel, Switzerland) · 2024Review
- A Systematic Review of Dynamic Forces and Kinematic Indicators of Front and Roundhouse Kicks across Varied Conditions and Participant Experience.Sports (Basel, Switzerland) · 2023Review
- Comparison of bilateral isokinetic and isometric strength differences in elite young male and female taekwondo athletes.Journal of exercise rehabilitation · 2022Article
- Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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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