Objective: The objective of this study is to present a scientific basis for ballet dancer training methods byanalyzing the relationships between subjective assessment of the ballet movement ``Grand pas de chat`` andkinematic and electromyographic factors.Method: The subjects were 14 professional dancers with 15 years of experience on average. Four camerasand a wireless electromyogram were used to examine kinematic factors, and the filmed videos were analyzedby 3 experts for subjective assessment.Results: Although no differences in kinematic factors were found between the excellent dancer group andthe non-excellent dancer group divided based on the experts`` assessment, some difference was found inelectromyographic factors, especially in relation to the gastrocnemius muscle, rectus femoris muscle, anderector spinae muscle. A relationship between subjective assessment and kinematic and electromyographicfactors was found, and factors such as right-side rectus femoris activation, time required, left-side gastrocnemiusactivation, and front-back displacement affected subjective assessment.Conclusion: This study showed a relationship between subjective assessment and kinematic andelectromyographic factors. To receive higher scores in subjective assessment, it is necessary to extend thehang time by using the lower limb muscles. The findings of this study also indicate the necessity of weighttraining in order to improve dancing techniques.