A Study About Motion Feature Of Excellent Male Athletes' Samba Advance Walk Step

Research Purpose: The sports dance project in the world belongs to the pattern of letting a hundred flowers bloom, sports dance teaching around the understanding of the technical action and requirements vary. Sports dance training and evaluation, and many other aspects, there is no objective quantitative standard, most in their own situation, the dance style is different. Based on this situation, scholars are eager to create the basic norms of sports dance technology action as soon as possible, from the theoretical basis to establish the quantitative indicators of the technical aspects, thus promoting the rapid development of sports dance professional. The Wuhan Institute of Physical Education Sports Art Institute of Latin dance elective class 12 male contestants, the samba forward walk step of basic movements, quantitative analysis and qualitative evaluation. The purpose is to reveal the basic characteristics and rules of the movement, and to provide theoretical basis for teaching and training.Research methods: This paper uses literature data, 3D image analysis and theory analysis as the main research methods, the basic theory of the application of dance and sports biomechanics, on completion of the study object of samba forward walk step action were analyzed and evaluated.The main conclusions: 1. In a complete Samba forward walk step action process, players of the body's center of gravity in the forward(x direction), the left and right direction(y) and vertical(z direction) in the direction of trajectory curve is obviously linear state, in which the direction of the best linearity, followed by a vertical direction. For the displacement of X, Y, Z three directions, X direction displacement is uniform increase and the amplitude is maximum, Z direction displacement is the smallest. 2. In a complete Samba forward walk step action process, players of the body's center of gravity in the forward(x direction), the left and right direction(y) and vertical(z direction) in the direction of trajectory curve is obviously linear state, in which the direction of the best linearity, followed by a vertical direction. For the displacement of X, Y, Z three directions, X direction displacement is uniform increase and the amplitude is maximum, Z direction displacement is the smallest. 3. The total time average players to complete the samba step forward WALK action for 1.48 seconds. Left and right foot respectively touch the ground to body perpendicular to the ground and body two vertically from the ground to the feet movement phase intersection, belong to the same action features, corresponding to the movement time or accounted for a percentage of the total movement time there is no big difference. In feet cross again to the left(knee) pedal from the ground stage, accounting for a percentage of the total movement time both greater than two feet first intersection to the left(the main legs) touchdown percentage, also is better than the other action phase. 4. Players in the complete Samba forward walk step action process in, about hip and knee-- both velocity in three directions, or the movement of nodes corresponding to the line speed value has in the X direction, Y direction followed, z direction of the minimum of the same rules. But there are some differences in the line speed of each action node of the left and right hip and knee joint. 5. While players complete Samba forward walk step action, left and right hip angle overall is slightly larger than the angle of knee joint; movement each node corresponding to the show in the left hip and knee joint angle are slightly larger than the right hip and knee joint angle.