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

PREDICCIÓN DE 4-6 RM DE EJERCICIOS DE PIERNAS Y PECTORALES POR MASA CORPORAL

ABSTRACT

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. Evidence Level IV; Case series.

Keywords:
Predictions and Projections; Muscle Strength; Body Weight