为了发展腹肌肌力,人们常采用仰卧起坐进行练习,而且相当普及,连中小学生都知道。随着动作规格的演变,仰卧起坐有不同做法,如:膝关节伸直的仰卧起坐;膝关节弯曲的仰卧起坐;以及仰卧两头起等。大多数人习惯用膝关节伸直的仰卧起坐进行练习。可是新颁布的国家《体育锻炼标准》(以下简称《标准》)却规定,女生通过仰卧起坐《标准》时,必须采 In order to develop abdominal muscle strength, people often use sit-ups for practice, and quite popular, even primary and secondary students know. With the evolution of action specifications, there are different ways of doing sit-ups, such as: sit-ups with straight knee extensions; knee-crunched sit-ups; Most people are accustomed to using knee-length crunches to practice. However, the newly promulgated National Physical Exercise Standard (hereinafter referred to as the “Standard”) stipulates that when girls pass the “standard” of sit-ups, they must adopt