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

Abstract

AcknowledgementsWe are very grateful to the athletes of the Escola do Movimento Track and Field club for their involvement in the study. The authors declare that they have no conflict of interest. Movement velocity as a measure of exercise intensity in three lower limb exercisesMovement strength velocity and intensity KEY WORDS: Resistance training, movement velocity, strength. ABSTRACTThe 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 one repetition maximum (1RM). Maximum instantaneous velocity (Vmax) and mean propulsive velocity (MPV) of the knee extension phase of each exercise were assessed.For all exercises, a strong relationship between Vmax and the %1RM was found: Leg Press (r 2 adj =0.96; 95% CI for slope is [-0.0244 Results indicate that it is possible to determine an exercise-specific %1RM by measuring movement velocity for that exercise.

Where does the One-Repetition Maximum Exist on the Force-Velocity Relationship in Squat?

“…So, little information is available about kinetic and kinematic data during the 1RM squat and its link with the F-V relationship. In previous studies, the average velocity reached during 1RM squat ranged from 0.25 to 0.33 m.s − 1 for a full squat or a half-squat [7,19,20], whereas, to our knowledge, ground reaction force data have not been reported for such exercises. Thus, it would be of interest to measure the force and velocity outputs during a 1RM squat to obtain more information about the position of the 1RM-associated F-V values along the F-V curve.…”

“…The aim of this study was to test whether the 1RM point is aligned with the linear F-V relationship obtained during loaded SJs, and if so, to determine its position along the F-V relationship, notably compared to the F0 value. The hypotheses were that i) the 1RM squat point is aligned with the F-V relationship obtained in SJ, because the 1RM squat movement is similar to loaded or unloaded SJs, only differing in the higher external load; and that ii) the 1RM point is closer to F0 than the highest loaded SJ condition habitually used, because the velocity reached during a 1RM squat is very low, even if not negligible [7,19,20]. If these two hypotheses were confirmed, the third aim of this study was to test the validity of simple computations to determine force and velocity during a 1RM squat test to complete the F-V relationship obtained using a simple computation method.…”

Evolution of Determinant Factors of Repeated Sprint Ability

“…The load that elicited a ~1.00 m·s -1 velocity relative to BM (V 1 -load) was used to assess strength performance. This load was chosen as it is considered a sufficiently high velocity that represents medium loads (Conceicao et al, 2015). Thus, it might represent the behavior of the force-velocity relationship.…”

Physiological predictors of competitive performance in CrossFit®athletes

“…The initial weight was 20 kg (i.e., only the bar), and the load was increased in 10–15 kg increments until a constant decrease in MPV was observed. Tests were deemed concluded when MPV decreased to 0.6 m∙s −1 for the full squat (6) and 0.4 m∙s −1 for the bench press (7). A three-minute rest was allowed between loads.…”

“…The 1RM was calculated for each exercise based on the individual force-velocity relationship through linear interpolation, assuming that it was attained with an MPV of 0.30 m∙s −1 for the full squat (6) and 0.16 m∙s −1 for the bench press (7). According to recent studies, this method provides an accurate estimate of the actual 1RM (8,9).…”