| Research Background:With the rapid development of society,sports dance projects have quickly entered the public eye.From the earliest Latin dance boom to the standard dance,it has become popular,and the appreciation of sports dance has increased year by year.The athletic ability of Chinese sports dancers has gradually increased,but there is a certain gap with foreign players.In the world famous British Blackpool event,there are very few Chinese players who can enter the top twenty.The reason why the results of the Chinese players' performance in the international are not ideal is largely due to the technical shortage of the Chinese players.In order to better promote the development of standard dance in China and improve the level of players,the study of the basic movements of standard dance dance is imminent.research method:This paper adopts literature,three-dimensional image analysis and theoretical analysis as the main research methods.Using the basic theories of dance and sports biomechanics,five excellent female players and 15 standard female contestants in the standard dance class are used as test objects.On the premise of the same excellent male player taking the action lead,using two Nissan Panasonic NV-MD9000 cameras,synchronous shooting of the tango in the tango dance is carried out in a fixed point,fixed focus,and fixed distance,and the US ARIEL 3D image is applied.The analysis system analyzes it to obtain the characteristics of displacement,speed,displacement,speed and angle of the upper and lower limbs and the head during the dragging process of excellent players and ordinary players.Research result:(1)In the process of the complete tango dance in Spain,from the displacement of the body's center of gravity in the three directions of X,Y and Z,the displacement values of the excellent and ordinary players in the X direction are the largest,respectively 0.687 meters and 0.614.Meter;the displacement values in the Z direction are the smallest,being 0.019 meters and 0.020 meters,respectively.From the time of completion of the action,the excellent and ordinary players spend 2.60 seconds and 2.62 seconds respectively.In the five action stages of the complete tango dance in Spain,from the displacement of the center of gravity of the body,the excellent and ordinary players have the largest displacement in the X direction and the smallest displacement in the Y direction in the first action phase,and the Y direction in the fifth action phase.The displacement is the smallest and the displacement in the Z direction is the largest.From the point of view of the excellent and ordinary players in each action phase,the fifth action phase takes the most time,accounting for more than 30% of the total time;the second action phase takes the least time,and the percentage of the total time is less than 6%.From the point of view of the linear velocity of each action node,the maximum value of the excellent and ordinary players appears in the X direction of the second action node,and the minimum value appears in the Z direction,but the excellent player corresponds to the third action node.Ordinary players correspond to the second action node.(2)In the process of the complete tango dance in Spain,the line displacement of the excellent player's head is larger than the ordinary player in the X direction of each action stage,but there is a certain difference in the Y and Z directions.From the linear velocity of the head of the six action nodes,the maximum value appears in the X direction and is around 0.300 m / s,but from the difference of the linear velocity of each action node,in the action nodes three and four The outstanding players in the Y direction are about 0.130 m/s faster than the average players.(3)In the process of the complete tango dance in Spain,from the perspective of the movement characteristics of the shoulders of the excellent and ordinary players,the rotation amplitude is the largest relative to the X axis and the smallest relative to the Y axis.The maximum value of the rotational amplitude of the six action nodes appears at the fifth action node,followed by the second action node.From the time of rotation of the shoulder shaft,since the shoulder shaft is integrated with the trunk,it is the same as the body movement time.(4)Excellent and ordinary players dragged the action nodes throughout Spain,the line displacement,left hip line speed and hip angle corresponding to the hip and knee joints were not significantly different,and the right hip and knee joint line speed excellent players and ordinary players.There are certain differences in all directions.In the second,third and sixth action nodes,the left knee angle of the ordinary player is significantly larger than that of the excellent player.In addition,in the fourth and fifth action nodes,the average player's right knee angle is larger than the excellent player.Analysis conclusion:(1)In the course of the complete Spanish dragging action,the body trajectory of ordinary and excellent players is roughly the same as the displacement in the X and Z directions.In the Y direction,the average player's body weight control ability is weaker than that of the excellent players.Shake more.At each action node,the center line of the average player's center of gravity in the X direction is significantly smaller than the excellent player,and in the Z direction is generally higher than the excellent player.In the time of completing the action,the average player and the excellent player are both 2.60 seconds,but the percentage of the total time in the relevant action phase is different from that of the ordinary player.(2)In the course of the complete Spanish dragging action,there is a certain difference between the displacement and the line speed of the ordinary player's head and the excellent players.This difference is in the line speed of the left heel push-off ground and the foot-moving action node.Especially outstanding.(3)In the process of the complete tango dance in Spain,there is no significant difference in the rotation amplitude of the shoulder axis of the ordinary and excellent players relative to the X and Z axes,but the rotation amplitude of the shoulder axis relative to the Y axis is quite different.When the torso rotates the end action node clockwise,the excellent player's shoulder axis is 10.640 degrees relative to Y,while the average player is only 1.113 degrees.In addition,in the action of the foot node,the shoulder rotation of the excellent player's shoulder axis relative to Y is 1.224 degrees,while the average player is 25.283 degrees.(4)In the process of complete Spanish dragging movement,from the characteristics of lower limb movement,the line displacement and hip angle corresponding to the hip and knee joints of ordinary and excellent players are not significantly different,but the hip and knee line of ordinary and excellent players The difference between the displacement and the knee angle is obvious in each action stage,especially the difference in the left knee angle of the right toe touch ground,the left heel push ground and the foot joint node. |
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