Abstract: Motor skills can be classified into two categories, open and closed, and each of these types of motor skills has unique characteristics regarding their patterns, features, processes, and neuromuscular control systems that are utilized. Moreover, these two types of motor skills are also controlled by two different types of neuromuscular control systems. Thus, not only should athletes engage in technical training based on the classifications of motor skills, but also, such principles should be applied to psychological training as well. However, many coaches, athletes, and practitioners have not been well informed about the classification of motor skills. Thus, the purpose of this paper is three-fold:(1) describe the different characteristics of open and closed motor skills and their two different neuromuscular control systems, (2) illustrate the determined factors of achieving peak performances in open and closed motor skill sport competitions, and (3) introduce mental preparation strategies for reaching athletes’ potentials in competitions based on the classifications of motor skills. After learning the characteristics of open and closed motor skills, hopefully coaches, practitioners, and sport psychology consultants can mentally prepare athletes to enhance their athletic performances.

Key words: Mental Preparations, Open Motor Skill, Closed Motor Skill, Athletes, Coaches, Peak Performance