场上不同位置的青少年男子足球运动员特征性运动自信心水平没有差异；

There was no significant difference for junior male soccer players at different position on field.

youdao

场上不同位置的青少年男子足球运动员特征性运动自信心水平没有差异；

There was no significant difference for junior male soccer players at different position on field.

youdao