BODY MASS TO PREDICT 4-6 RM OF PECTORAL AND LEG MUSCLES EXERCISES IN BODYBUILDERS

Introduction: Submaximal strength testing appears to be valid to prescribe the intensity for strength training
protocols that reduce the risk of injuries and testing time. Objective: This study aimed to assess the predictive ability
of body mass parameters to estimate 4-6 repetitions maximum (4-6 RM) of Leg press 45°, Chest press, and Pull-down
exercises. Methods: Eleven male bodybuilders (age 38.27 ± 10.48 years) participated in this study. Participants completed
an incremental external load up to find the load allowing them to perform 4 to 6 maximal repetitions for each
exercise in random order. The starting load was 50% of body mass for chest press and pull-down exercises and 100%
for leg press. The load increment after each set was 20 kg for lower limb exercises and 10 kg for upper body exercises.
Results: Results revealed that body mass had good to optimal relationships with 4-6 RM for all three exercises. Results
showed that body mass had a good prediction ability for all three criterion measures. Conclusion: The prediction
equations suggested in this study may allow coaches to estimate the 4-6 RM of leg press 45°, chest press, and pull-down
performances.