The statistic includes of non-athlete male students that register in general
physical education unit (1) in the first semester of 89-90, among which 30 subjects (in three groups of control,
Reverse pyramid, and Pyramid)are selected randomly.
The conditions and different steps of test establishment are described in details for the subjects, and those who
experienced heart diseases, injury or even special health case are asked to abstain from engagement in this research.