GROUND REACTION FORCE AND RATE OF FORCE DEVELOPMENT DURING LOWER BODY RESISTANCE TRAINING EXERCISES

Abstract

This study quantified the differences in the kinetic profiles of the back squat, deadlift, step-up, and lunge. Eleven subjects performed 2 repetitions of their 5 repetition maximum in each of the 4 exercises. Kinetic data were collected using a force platform. The exercises were compared based on their peak vertical ground reaction force (GRFP) and rate of force development (RFD) in both the eccentric and concentric phase. A repeated measures ANOVA indicated differences (p ≤ 0.001) in GRFP attained for the different exercises in both the eccentric and concentric phase. No significant differences (p ≥ 0.05) were found for RFD for any of the exercises in either the eccentric or concentric phase. Results can guide the development of training programs that are specific to strength, explosiveness, or osteogenesis.