Movement velocity as a measure of exercise intensity in three lower limb exercises

作者：Conceicao Filipe^*; Fernandes Juvenal; Lewis Martin; Gonzalez Badillo Juan Jose; Jimenez Reyes Pedro

来源：Journal of Sports Sciences, 2016, 34(12): 1099-1106.

DOI：10.1080/02640414.2015.1090010

• Resistance training
• movement velocity
• intensity
• strength

The purpose of this study was to investigate the relationship between movement velocity and relative load in three lower limbs exercises commonly used to develop strength: leg press, full squat and half squat. The percentage of one repetition maximum (%1RM) has typically been used as the main parameter to control resistance training; however, more recent research has proposed movement velocity as an alternative. Fifteen participants performed a load progression with a range of loads until they reached their 1RM. Maximum instantaneous velocity (V-max) and mean propulsive velocity (MPV) of the knee extension phase of each exercise were assessed. For all exercises, a strong relationship between V-max and the %1RM was found: leg press (r(adj)(2)=0.96; 95% CI for slope is [-0.0244, -0.0258], P<0.0001), full squat (r(adj)(2)=0.94; 95% CI for slope is [-0.0144, -0.0139], P<0.0001) and half squat (r(adj)(2)=0.97; 95% CI for slope is [-0.0135, -0.00143], P<0.0001); for MPV, leg press (r(adj)(2)=0.96; 95% CI for slope is [-0.0169, -0.0175], P<0.0001, full squat (r(adj)(2)=0.95; 95% CI for slope is [-0.0136, -0.0128], P<0.0001) and half squat (r(adj)(2)=0.96; 95% CI for slope is [-0.0116, 0.0124], P<0.0001). The 1RM was attained with a MPV and V-max of 0.21 +/- 0.06ms(-1) and 0.63 +/- 0.15ms(-1), 0.29 +/- 0.05ms(-1) and 0.89 +/- 0.17ms(-1), 0.33 +/- 0.05ms(-1) and 0.95 +/- 0.13ms(-1) for leg press, full squat and half squat, respectively. Results indicate that it is possible to determine an exercise-specific %1RM by measuring movement velocity for that exercise.

• 出版日期2016-6-17