@misc{10481/96764,
year = {2020},
month = {4},
url = {https://hdl.handle.net/10481/96764},
abstract = {Previous studies have revealed
that the velocity of the bar can be used to determine the
intensity of different resistance training exercises. However, the
load-velocity relationship seems to be exercise dependent. This
study aimed to compare the load-velocity relationship obtained
from 2 variations of the half-squat exercise (traditional vs. ballistic)
using 2 execution techniques (eccentric-concentric vs.
concentric-only). Twenty men performed a submaximal progressive
loading test in 4 half-squat exercises: eccentric-concentric
traditional-squat, concentric-only traditional-squat, countermovement
jump (i.e., ballistic squat using the eccentric-concentric
technique), and squat jump (i.e., ballistic squat using the
concentric-only technique). Individual linear regressions were used
to estimate the 1 repetition maximum (1RM) for each half-squat
exercise. Thereafter, another linear regression was applied to
establish the relationship between the relative load (%RM) and
mean propulsive velocity (MPV). For all exercises, a strong relationship
was observed between %RM and MPV: eccentric-concentric
traditional-squat (R2 = 0.949), concentric-only traditional-squat
(R2 = 0.920), countermovement jump (R2 = 0.957), and squat
jump (R2 = 0.879). The velocities associated with each %RM
were higher for the ballistic variation and the eccentric-concentric
technique than for the traditional variation and concentric-only
technique, respectively. Differences in velocity among the halfsquat
exercises decreased with the increment in the relative load.
These results demonstrate that the MPV can be used to predict
exercise intensity in the 4 half-squat exercises. However, independent
regressions are required for each half-squat exercise
because the load-velocity relationship proved to be task specific},
organization = {Ministry
of Science and Innovation of Spain (DEP2015-64350-P MINECO/FEDER)},
organization = {Research group Analysis and Control of Sport Performance (SEJ438)},
publisher = {Walter Kluwer},
keywords = {velocity-based training},
keywords = {jump squat},
keywords = {eccentric-concentric technique},
keywords = {concentric-only technique},
title = {Load-velocity relationship in variations of the half-squat exercise: Influence of execution technique},
doi = {10.1519/JSC.0000000000002072},
author = {Pérez Castilla, Alejandro and García Ramos, Amador and Padial Puche, Paulino and Morales Artacho, Antonio Jesús and Feriche Fernández-Castanys, María Belén},
}