Research On Accuracy Of Six Predication Equations To Predicate Bench Press And Parallel Squat In Strength Periodization Training

In order to examine the accuracy of 6 maximal strength(1RM) predication equations on predicating bench press and parallel squat, 20 male college physical education students were employed to undergo twice actual 1RM testing on bench press and parallel squat with 7 days apart, and undergo 50% 1RM and 80%1RM RTP testing of first actual 1RM respectively. After a 8-weeks strength training program which starts from 60% 1RM of Bench press and parallel squat to 90% progressively with de-loading at 50%1RM of main exercises and low loaded for auxiliary exercises respectively to avoid overtraining.Maximum strength(1 RM)of bench press and parallel squat were retested after 8 weeks, and 50% and 80% of retested 1RM of bench press and parallel squat were used for repetition maximum one after one with long enough intervals for sufficient rest.Results showed that test-retest of actual 1RM testing was high related, and 6 predication equations had different accuracy on bench press and parallel squat 1RM. 80%1RM RTF was more accurate than 50% 1RM RTF and Brown, O’Connor, and Welday’s predication equations are more accurate for male physical education students.Although 8 weeks strength training was administered for the subjects and obvious increases in bench press and parallel squats were found, the 6 estimated equations still work for new 1RM estimation of bench press and parallel squat.Conclusions:1. In contrast to 50%1RM bench press as well as parallel squat, 80% 1RM for maximum repetition(RFT) is much more accurate;2. Estimated equations of 6 still be efficient when the new level of bench press and parallel squat are reached;3. O’Connor and Welday’s estimation equations have more accurate estimation for the subjects who have many years training experiences on strenght training;...