2.1. Participants
This research is of semi-experimental. 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.
2.1.1. Measurements
Before beginning the train, the purpose and inetention of carrying this research are explained for the subjects, and
then the practical work trend for each group of control and experimental one indicated carefully. The subjects are
encouraged by their researchers to increase their motivation and do their maximum efforts. After 10 minutes of light
warm up in the first session including jogging and stretching activities ,an one-repetition maximum (1RM) Mehdi Bostani and Marina Shariati / Procedia - Social and Behavioral Sciences 46 ( 2012 ) 417 – 420 419
movement is determined through trial and error method for the acting muscles in chest press movement and Hgue
osku, knee flexor and elbow flexor among the three groups(pre-test).
In the trail and test method, the value of weight is increased progressively, until an individual could move or raise
his selected weight only once in a correct method. In determining a maximum repetition through trial and error
method, the subjects are requested to have sufficient rest between recording steps. Then, two experimental groups
engaged in 18 sessions of weight training with two different method; the training sessions are hold as one day to the