Research Article

Technical Diagnosis on Elite Female Discus Athletes Based on Grey Relational Analysis

Table 1

Correlation analysis between each key point or stage and achievement.

After put the biggestRight foot off the ground moment (double support)Left foot off the ground (first shot support)Right foot touching the ground (airborne)Moment left foot touches the ground (second support)Moment of release (force stage)

Discus speedR = 0.238, R = 0.249, R = 0.409, R = 0.075, R = 0.609,

Angle of shoulder and arm overtaking angleR = 0.020, R = 0.373, R = 0.482, R = 0.183, R = 0.310, R = 0.335,

Shoulder hip angle of transcendenceR = 0.366, R = 0.101, R = 0.259, R = 0.225, R = 0.336, R = 0.102,

The trunk angleR = 0.344, R = 0.466, R = 0.89, R = 0.437, R = 0.217, R = 0.456

Arm angleR = 0.265, R = 0.061, R = 0.398, R = 0.405, R = 0.155, R = 0.377,

WhenR = 0.332, R = 0.540, R = 0.477, R = 0.603, R = 0.099

Discus displacementR = 0.492, R = 0.153, R = 0.464, R = 0.449, R = 0.048,

Centroid displacementR = 0.575, R = 0.033, R = 0.549, R = 0.458, R = 0.185

To highlyR = 0.263,

Angle forR = 0.531,

The absolute value of R is close to 1, indicating a greater correlation with performance; was significantly different from grade.