Journal
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
Volume 38, Issue 14, Pages 1083-1089Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0043-118341
Keywords
force-velocity relationships; strength training; maximal power; multi-joint lower-limb extension
Categories
Ask authors/readers for more resources
The aim was to compare lower-limb power, force, and velocity capabilities between squat and leg press movements. Ten healthy sportsmen performed ballistic lower-limb push-offs against 5-to-12 different loads during both the squat and leg press. Individual linear force-velocity and polynomial power-velocity relationships were determined for both movements from push-off mean force and velocity measured continuously with a pressure sensor and linear encoder. Maximal power output, theoretical maximal force and velocity, force-velocity profile and optimal velocity were computed. During the squat, maximal power output (17.7 +/- 3.59 vs. 10.9 +/- 1.39Wkg(-1)), theoretical maximal velocity (1.66 +/- 0.29 vs. 0.88 +/- 0.18ms(-1)), optimal velocity (0.839 +/- 0.144 vs. 0.465 +/- 0.107ms(-1)), and force-velocity profile (-27.2 +/- 8.5 vs. -64.3 +/- 29.5Nsm(-1)kg(-1)) values were significantly higher than during the leg press (p=0.000, effect size=1.72-3.23), whereas theoretical maximal force values (43.1 +/- 8.6 vs. 51.9 +/- 14.0Nkg(-1), p=0.034, effect size=0.75) were significantly lower. The mechanical capabilities of the lower-limb extensors were different in the squat compared with the leg press with higher maximal power due to much higher velocity capabilities (e.g. ability to produce force at high velocities) even if moderately lower maximal force qualities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available