Sentences with phrase «of knee flexion»

This results in increased degrees of knee flexion in order to clear the ground.

Assessing the effect of foot placement, Escamilla et al. (2001) compared the horizontal leg press performed with a high foot placement (90 — 100 degrees of knee flexion in bottom position) and a low foot placement (20 cm lower).

Assessing the effect of knee flexion angle, Klein et al. (1996) measured the moment arm as a function of ankle joint range of motion in 10 cadavers.

For this reason, Olympic weightlifters have primary done high bar back squats and front squats to develop strength in the exact positional alignments needed to transfer over to cleans and snatches (an upright torso with high amounts of knee flexion).

In addition, it's superior to traditional leg exercises because of the greater emphasis on the eccentric component of knee flexion and its strong carryover to the deadlift and squat.

For those of you who aren't familiar with that terminology, think of knee flexion as a leg curl — where you are taking your foot and moving it towards your glutes in one fluid motion.

Gluteus maximus EMG amplitude can be enhanced during back extensions by performing the exercise in a position of knee flexion and / or in hip external rotation, and by adding external loads (such as by wearing a weighted vest or holding a dumbbell or weight plate).

Comparing the effect of squats with different stance widths, Escamilla et al. (2001a) reported no differences in hip moment arm lengths between the narrow, medium, and wide stance width squats at any point in the lowering and lifting phases, except at 45 degrees of knee flexion in the lifting phase, when the medium and wide stance width squats displayed greater hip moment arm lengths than narrow stance width squats.

You should not be increasing the amount of knee flexion, nor should you be lifting the kettlebell with your shoulders to assist getting the kettlebell into the top position.

Some patients will even feel a tender, thickened band of tissue in this location which is becoming caught under the knee cap between 30 to 70 degrees of knee flexion.

In contrast, Tamaki et al. (1996) found that the soleus muscle activity was superior with increasing knee flexion angle, ranging between fully extended and 60 degrees of knee flexion.

Further, Hebert - Losier et al. (2012) compared the single leg heel raise performed with the knee extended or with 45 degrees of knee flexion.

Exploring the effect of knee flexion angle, Cresswell et al. (1995) assessed the gastrocnemius and soleus muscle activity during isometric plantarflexion with varying degrees of knee flexion ranging between a fully extended and 130 degrees (flexed) position.

They report that medial and lateral gastrocnemius muscle activity was superior when performing the heel raise with a straight leg, while the soleus displayed a small (4 %) but significant increase in muscle activity when performing the heel raise with 45 degrees of knee flexion.

In most cases, people aren't coming down to a full 90 degrees of knee flexion, which is needed for getting in / out of a chair.

It is suggested that this works due to the ability of the exercise to increase the peak eccentric force of the hamstrings at shallower angles of knee flexion (the knee is more extended) vs. a leg curl which puts a premium on concentric force when the knee is in full flexion.

Where exercises display peak hamstrings EMG amplitude at different degrees of knee flexion, this may imply that they could lead to increases in strength and hypertrophy in different parts of the hamstring muscles.

Andersen et al. (2015) reported joint angle - specific gains in strength, whereby squats with free weights produced gains in isometric strength at both 60 and 90 degrees of knee flexion, while squats against elastic bands produced gains in isometric strength only at 60 degrees of knee flexion.

Assessing the effect of range of motion, Gorsuch et al. (2014) compared partial and parallel squats (45 vs. 90 degrees of knee flexion) with loads equal to the 10RM.

Perform with a straight leg, allowing no degree of knee flexion.

Indeed, Bandy & Hanten (1993) tested isometric strength at multiple joint angles in three groups who performed isometric knee extension training at either short muscle lengths (30 degrees of knee flexion), moderate muscle lengths (60 degrees of knee flexion) or long muscle lengths (90 degrees of knee flexion), where full knee extension is 0 degrees of knee flexion.

They tested joint angles from long (90 degrees of knee flexion) to short (30 degrees of knee flexion) muscle lengths, expecting to see greater gains for the isotonic group at both ends of the range of motion, where loading was higher than in the middle.

Gluteus maximus EMG amplitude in 0 and 30 degrees of knee flexion was substantially lower (48 % and 53 % of MVIC) than in 60, 90 or 110 degrees of knee flexion (63 — 65 % of MVIC).

Kang et al. (2013) tested gluteus maximus and hamstrings amplitude during prone hip extension while in 90 degrees of knee flexion in three different positions of hip abduction: 0 degrees, 15 degrees and 30 degrees.