1.** Content difference * *: Compared with the second edition, the third edition closely follows the requirements of undergraduate education and teaching in the new era, highlights basic theories and knowledge, and further improves the quality of teaching materials.

2.** Differences in the scope of application * *: The third edition can be used as a basic teaching material for physical education majors in colleges and universities, a reference book for sports theory researchers and an educational book for physical education teachers. In contrast, the second edition can only be used as a basic teaching material for physical education majors in colleges and universities, not as other reference books, and not as universal as the third edition.

Generally speaking, the third edition is more in line with the teaching requirements of undergraduate education in the new era than the second edition, and the third edition has a wider scope of application than the second edition.