Introduction

Motions and locomotions are fundamental phenomena of our life which are governed by mechanical laws with respect of time, displacement, velocity and speed movement. Due to the development of human nervous system individuals can acquire many various motions. Biomechanics is dealing with the analysis of human motions. It is the study of the structure and function of biological as well as mechanical systems being in the state of constant motion. Sport biomechanics attempts to examine laws that affect sports achievements and performance by methods of mechanics. Naturally mechanics of rigid bodies cannot be used for analysing biological aspects of motion (Engels, 1958). The movement of individuals will change their body shape while external mechanical forces through muscles skeletal are interacting with each other. By working muscles chemical reaction occurs, and nerve and muscle coordination are the consequences of physiological processes. Then it is understandable to approach human body and living organisms from both mechanical and biological aspects. It would be worth studying to what extent our material world may affect sports and what techniques are really economical and efficient (Barton, 1983).