Sentences with phrase «flexion muscle»

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.

As you can see from the chart below, the clavicular head of the pectoralis major displays the largest shoulder flexion muscle moment arm out of all parts of the pectoralis major, with a peak moment arm length of 53.7 mm at 71 degrees of shoulder flexion (arms just below parallel with the ground).

Editor's note: Steve Holman is the author of many bodybuilding best - sellers and the creator of Positions - of - Flexion muscle training.

Not exact matches

Secondly, you are correct in that having a level of muscle tension that makes bringing the feet and legs up into flexion and toward the mouth at 6 months of age is not super expected.

Their muscle strength was measured utilising handgrip strength, three lower body exercises such as leg extension, leg flexion and leg press and two upper body exercises such as chest press and seated row.

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.

The hamstrings cross two joints — the knee joint and the hip joint — so they need to be trained with the help of exercises that target the knee flexion function and the hip extension function of the hamstring muscle separately.

The hamstring is actually comprised of three muscles: the semitendinosus, semimembranosus and biceps femoris, which are responsible for knee flexion and stabilization and hip extension.

The forearm is a very visible muscle group, comprised of many smaller muscles with different functions, such as generating the actions of the hand and fingers, wrist flexion and extension, and much more.

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.

The majority of studies seem to support the claim that the dumbbell bench press is a better option for anyone looking to increase his chest size, mainly because of the greater range of motion involved — a greater range of motion on pressing movements means more horizontal flexion and adduction and a greater recruitment of chest muscle fibers.

This is a very important muscle group for athletes though, because it performs multiple functions crucial for explosive strength, such as knee flexion and hip extension.

Being close to the deltoid muscle, the clavicular head significantly contributes to flexion, horizontal adduction and inward rotation of the humerus, and is best engaged with exercises which involve shoulder flexion and movements that end with your elbows above your clavicle.

These ab muscles are responsible for the rotation and flexion of the torso.

The calf muscles main action is pointing the toes (plantar flexion) or standing on your tippy toes.

Lying leg curls work the hams more directly and with a more concentrated contraction than any other exercise, and they are especially important for training the knee flexion function of the muscle.

Resisted flexion is excellent for targeting the hard to reach small muscles in the foot.

The muscles are responsible for dorsi - flexion (pulling the foot upward), plantar flexion (pushing the foot downward), eversion (turning the foot outward), inversion (turning the foot inward), and combined angle movements.

EMG studies of the long head of the biceps brachii show that muscle fibers in the lateral portion of the muscle are recruited for elbow flexion, fibers in the medial aspect are recruited for supination, and centrally located fibers are recruited for non-linear combinations of flexion and supination.

These muscles control extension and flexion of the vertebral column and can increase optimal posture of the spine when performing sprints.

The psoas is a powerful pelvic muscle that plays a key role in hip flexion.

Both muscles contract to produce «plantar flexion» at the ankle joint which is the same movement as standing up onto your tip - toes.

On strength testing the muscle, pain will be felt on resisted plantar flexion (pushing the toes and foot downwards towards the floor) against resistance.

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

Also, hammer curls do an excellent job distributing the workload to all of the muscles responsible for elbow flexion.

Owing to their attachment sites and location the calf muscles function primarily to perform plantar - flexion, which can be investigated by both electromyography (EMG) and magnetic resonance imaging (MRI) scans.

The hip muscles act on three mutually perpendicular main axes, all of which pass through the center of the femoral head, resulting in three degrees of freedom and three pair of principal directions: Flexion and extension around a transverse axis (left - right); lateral rotation and medial rotation around a longitudinal axis (along the thigh); and abduction and adduction around a sagittal axis (forward - backward); [29] and a combination of these movements (i.e. circumduction, a compound movement in which the leg describes the surface of an irregular cone).

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.

They report that with increasing knee flexion angle gastrocnemius muscle activity decreased and soleus muscle activity remained unchanged.

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.

The calf muscles display their longest moment arm lengths at end - range plantar - flexion, and their smallest moment arm lengths at end - range dorsiflexion.

Therefore, in balance, it appears the calf muscles display their greatest force - producing ability in plantar - flexion.

Before writing an article about stretching hip flexors, might I recommend educating yourself on what hip flexion is, and what muscles are responsible for that action?

In practical terms, both upper and middle trapezius display high muscle activity at knee flexion angles of 31 — 60 degrees.

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.

However, increases in muscle fascicle length are also likely dependent on the mechanical load incurred by the prime mover, as knee flexion (hamstring only) exercise seems to lead to greater adaptations in the hamstrings than hip extension (hamstring, gluteus maximus, and adductor magnus) exercise, even when muscle length at peak contraction is shorter (Bourne et al. 2016).

So seated plantar flexion exercises may benefit most from a focus on type I muscle fibers.

Therefore, exercises that involve plantar - flexion are likely to be beneficial in training these muscles.

Preacher curls only work on elbow flexion, which means you're missing 50 % of the muscle's action.

The joint should be assessed in both hip flexion and extension as the change in position affects muscle function of some of the prime movers here — namely gluteus minimus and piriformis, which switch between internally and externally rotating the hip, depending on the degree of flexion the joint is in.

Beyond that, when you brace, you engage your rectus abdominus, which has a flexion force, again putting your intervertebral discs at risk as patients relying on this muscle can't and don't hold the natural / protective lordotic curve of the lumbar spine.

The Psoas major is a pelvic muscle that is crucial to hip flexion.

Every movement you make involves one or more of your muscles performing flexion (muscle shortening), while the opposing muscle (s) are performing extension (muscle lengthening), so by using your mind to «stretch» (extend) or «squeeze» (flex) the muscle you can manipulate your body to push and pull its way to success.

The muscles of your forearms and wrists allow for flexion, extension, and wrist rotation.

The function of this muscle is plantar flexion (elevating the heel).

Your back muscles pull your spine backwards (into extension), and your stomach muscles pull your spine forwards (into flexion).

They can be done for a range of different shoulder movmements to strengthen the muscles around the entire joint including adduction, abduction, flexion, extension and rotation.

Lateral neck flexion stretch targets the upper trapezius muscle.