Sentences with phrase «during flexion»

II Patella can be manually luxated or can spontaneously luxate during flexion it returns to normal position easily during extension, lameness is intermittent

During flexion / extension of the knee joint, as in squats, jumps, and lunges, muscles in the legs, pelvic region, and core should be engaged.

TSNs also ensured accurate target localization during movement; when TSNs were injected in rat's thigh and calf muscles, they did not move even during the flexion and extension of the leg.

Not exact matches

Proper head positioning can help you prevent injury and generate more force, but looking at the ceiling during heavy squats squeezes the spinal discs in your neck, hyperextends the neck, forces the hips forward prematurely, increases knee flexion and can easily result with neck pain and injury.

Research has shown that EMG activity in the middle trapezius is the greatest during shoulder external rotation and flexion in the prone position (think mini-range lat pull - downs, voyeur shrugs, half T - raises and standing calf raise shrugs), so make the most use of that.

Hammer curls are a perfect low - intensity exercise for building of the brachialis, which is an important muscle in the upper arm that's activated during isometric elbow flexion.

«If you don't get a lot of hip flexion during the squat, you won't use your glutes.

The movements of flexion, rotation, and extension are kept in check by maintaining the braced neutral position of the spine during an anti-pattern exercise.

Changing foot orientation changes the percentage of each of the 3 hamstrings during knee flexion.

Comparing differences between legs during the back squat, Flanagan and Salem (2007) found that peak knee flexion angles displayed bilateral differences, with the right side achieving a more acute angle than the left side.

The middle trapezius is highly activity during retraction exercises, while the lower trapezius is highly activity in abduction / flexion exercises with the arm at or above horizontal, as well as horizontal rowing.

Bryanton et al. (2012) found that peak hip extensor moments increased with increasing depth (albeit with the same absolute loads) but Wretenberg et al. (1996) reported that peak hip extensor moments during both powerlifting squats and during Olympic weightlifting - style squats did not differ substantially between deep and parallel versions (deep = maximal knee flexion vs. parallel = posterior of the hamstrings parallel to the ground).

Therefore, it appears that during dynamic plantarflexion with an extended knee position preferentially targets the gastrocnemius, while performing plantar flexion with a flexed knee preferentially targets the soleus muscle.

In agreement, Reid et al. (2011) compared eccentric plantar flexion with the knee fully extended and during a flexed position and reported superior gastrocnemius muscle activity during plantar flexion with full knee extension and no difference in soleus muscle activity.

Marchant, D.C., Greig, M., & Scott, C. (2009) Attentional focusing instructions influence force production and muscular activity during isokinetic elbow flexions.

During ankle plantar - flexion, relative load, knee joint angle, ankle joint angle and repetition speed all appear to affect both gastrocnemius and soleus muscle activity.

Avoid forward flexion of your neck, particularly during work - outs with weights, as this movement can reverse the proper forward curve in the neck, and therefore interfere with your adjustment (which aims to restore and maintain proper alignment).

Wretenberg et al. (1996) found that peak knee extensor moments were greater during both powerlifting squats and during Olympic weightlifting - style squats when performed with greater depth (deep = maximal knee flexion vs. parallel = posterior of the hamstrings parallel to the ground).

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.

This is also how we're going to get around any knee issues you might have... there won't be any active bending (i.e. flexion) in the knee during the exercise, other than simply holding a position.

When sprinting, one the initial early acceleration phase has been completed, the joint angles of the hip and knee during the ground contact phase range from 30 degrees of flexion through to full extension.

Jackson et al. (2008) compared the COV of the EMG amplitude (linear envelope) in the thoracic and lumbar erector spinae between MVICs and SVICs, during prone, seated, and standing trunk flexion tasks.

Da Silva et al. (2009a) investigated the effects of pelvic stabilization and degree of hip flexion on hamstring EMG amplitude during horizontal back extensions.

The greater anterior pelvic tilt and peak hip flexion on the injured side may lead to a greater maximum length of this hamstring muscle during running, which may predispose them to greater risk of recurrent hamstring strain injury.

It was originally suggested that hamstring strain injury occurred most commonly during the early stance phase, as this is where both knee flexion and hip extension moments are highest (Mann & Sprague, 1980).

While the bench press produces superior muscle activity compared to the shoulder press despite similar elbow flexion ranges of motion, it appears the load lifted is also greater, thus indicating that greater loads produce superior triceps muscle activity during compound exercises with similar elbow joint range of motion.

They reported no difference in flexion action duration between partial ROM bench press compared with full ROM bench press despite a much shorter barbell displacement, while extension action duration was much shorter (76 %), though non-significant, during the partial ROM bench press.

Exploring multiple sets of the Nordic hamstring curl exercise, Marshall et al. (2015) noted that a single set of 5 repetitions led to substantial reductions in peak eccentric knee flexion moments during the exercise, with even further reductions in subsequent sets, implying that performing the Nordic hamstring curl prior to practice or other exercise might not be advisable.

Assessing the effect of stability during both compound and trunk flexion exercises, Mok et al. (2014) assessed the muscle activity of the abdominals in a number of suspension exercises including the hip abduction plank (feet in straps), press up, inverted row and hamstring curl (feet in straps).

It appears that the involvement of hip flexion increases external oblique muscle activity during the sit up, when performed with either straight or bent legs.

Similarly, Ninos et al. (1997) found no changes in EMG amplitude with knee flexion angles during the squat, while changes in quadriceps EMG amplitude were noted.

There are also indications that injured athletes tend to display greater peak anterior pelvic tilt and peak hip flexion on the injured side than on the uninjured side during running, while uninjured athletes do not (Daly et al. 2015).

Assessing the effect of relative load during different trunk flexion exercises, Sternlicht et al. (2003) compared a number of abdominal exercises (Ab Roller Plus, Torso Track 2, AB - Doer Pro, and the Perfect Abs) to the traditional curl up.

It was also noted that the standardized step length led to an increase in the degree of peak hip flexion, which increases hip range - of - motion during the lunge movement.

It is thought that lower hip abduction strength leads to a reduced ability to control the hip abduction and internal rotation movements of the thigh during knee flexion.

Assessing the effect of bench press ROM, Mookerje & Ratamess (1999) found that during partial ROM bench press, elbow extension duration was longer (58 %) than the flexion duration, but this did not reach statistical significance.

The external oblique extends from the front of the lateral pelvis to the side of the lower ribs and thus is highly active during spine rotation (McGill et al. 1991) and lateral flexion (Konrad et al. 2001).

Similarly, Fujisawa et al. (2014) found that hip flexion angle did not affect gluteus medius muscle activity when the knee was in full extension during isometric hip abduction.

Hip extension - flexion — Unclear effects during hip abduction / external rotation movements, although greater hip flexion could possibly be beneficial

Grip width affects the shoulder angle during the sticking region in the bench press, where shoulder abduction angle is more acute and flexion angle is greater at the start of the sticking region using a narrow grip compared to medium and wide grip widths.

During rehabilitation exercises involving hip adduction, the adductors may be preferentially activated at different degrees of hip flexion.

Arnold and Delp (2001) noted that during the typical hip flexion - extension cycle involved in gait, the moment arm of the gracilis in the transverse plane was for external rotation but was still very small at around 1.0 cm.

If you sense any pressure in your neck or traps during the movement, look to address a lack of thoracic spine extension or shoulder flexion.

During hip abduction, a greater hip flexion angle seems to lead to greater gluteus maximus EMG amplitude.

Comparing hamstring strain injury prevention and rehabilitation exercises, Orishimo & McHugh (2015) found that the supine sliding leg curl (Slider) produced greater gluteus maximus EMG amplitude during the eccentric phase than the standing elastic - band resisted hip extension, the standing trunk flexion (Glider) or the standing split (Diver).

Moreover, Jakobsen et al. (2013) reported that during lunges with both free weights and elastic resistance, EMG amplitude of most of the leg muscles is greatest at the point of peak hip and knee flexion, where ground reaction forces are exerted in order to start the lifting phase but that in the elastic resistance condition, there was a trend towards a more even level of EMG amplitude across joint angles.

Similarly, since previous studies have found that knee flexion leads to increased gluteus maximus EMG amplitude through active insufficiency of the hamstrings, placing the knee into flexion during back extensions might also be expected to increase gluteus maximus EMG amplitude during back extensions.

Fischer and Houtz (1968) also reported greater gluteus maximus EMG amplitude in full hip extension compared to greater degrees of hip flexion, during hip extension.

While the anterior deltoid has only the fourth largest peak moment arm length during shoulder flexion, the clavicular pectoralis major and posterior and anterior subscapularis have maximum moment arms lengths at moderate (71 degrees) and small (2.5 degrees) shoulder positions respectively.

Ackland et al. (2008) reported that the middle deltoid displayed a similarly large shoulder flexion muscle moment arm of 33.1 mm at 120 degrees, indicating that both the anterior and middle deltoids are capable of producing large forces during shoulder flexion in the scapular plane.