Muscle Functions Of Muscle Function

*John Guido and Sherry Werner make a point that “The stride leg functions to dynamically stabilize the hip and knee joints in a single leg stance to maintain standing posture for

In this phase the athlete is standing in a neutral position holding the ball. The metatarsophalangeal and interphalangeal (great and lesser toes) are held at slight flexion pressed against the ground by an isometric contraction of the flexor halluces longus, flexor digitorum longus, flexor digitorum longus. The ankle is plantar flexed using an isometric contraction of the gastrocnemius and the soleus. The tibiofermoral (knee) joints are slightly flexed by a isomectric contraction of the quadriceps muscles (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius). The acetabularfemoral (hip) joint is held at a postion of slight flexion through an isometric contraction of the biceps femoris, pectineus, iliacus, and the psoas. The intervertebral (lumbar) joint is extended by an isometric contraction using the erector spinae. The atlantooccipital (cervical spine) joint is flexed by an isometric contraction erector spinae. Both scapulothroracic (shoulder girdle) joint is protracted by an isometric contraction of the serratus anterior and pectoralis minor. The glenohumeral (shoulder) joint is at internal rotation by an isometric contraction using the pectoralis major, latissimus dorsi, teres major, and the subscapularius. The humeroulnar (elbow) joint is at 90 degrees of flexion by an isometric contraction using the biceps brachii, brachioradialis, and brachialis. The radiocarpal (wrist left and right)

6. Identify the movements associated with the arm, forearm, wrist, and fingers. Rotation, flexing, extension, hyperextension, proation, and supination.

during these movements, the angles of those joints, as well as the muscles involved during the

It's function is to hold the tendons in position. It's dysfunction can cause is tenosynovitis and carpal tunnel syndrome.

Shoulder flexion/extension; Elbow flexion and extension; Use of the lower and upper back. Muscles involved include the latissimus dorsi, rhomboids, trapezius, deltoids and the pectorals.

The shoulder is a ball and socket joint which allows it a flexion and extension motion.

The antagonist is the posterior deltoid, latissimus dorsi, and triceps brachii. When the shoulder performs extension the agonist (prime mover) is posterior deltoid and latissimus dorsi. The antagonist is anterior deltoid and pectoralis major. During shoulder adduction the agonist muscle is the latissimus dorsi and pectoralis major; the antagonist muscle is the deltoid (middle). When shoulder abduction is performed the agonist muscle is the deltoid (middle) and the antagonist muscle is the latissimus dorsi and pectoralis major (FCG, 2016). In wrist flexion the agonist muscle is flexor digitorum and the antagonist is extensor digitorum. When performing wrist extension the agonist muscle is the extensor digitorum and the antagonist is flexor digitorum. In elbow flexion the agonist muscle is the biceps brachii and the antagonist muscle is triceps brachii. During elbow extension the agonist muscle is the triceps brachii and the antagonist muscle is biceps brachii. In trunk flexion the agonist muscle is the rectus abdominis and the antagonist muscle is erector spinae. When performing trunk extension the agonist muscle is the erector spinae and the antagonist muscle is rectus abdominis (BBC, 2016). During hip flexion the agonist muscle is the illiopsoas/quadriceps and the antagonist muscle are gluteus maximus/hamstrings. When performing hip extension the agonist muscle is the glueteus maximus/hamstrings and the antagonist are lliopsoas/quadriceps. During knee flexion the agonist muscle is the hamstring and the antagonist are quadriceps. When performing knee extension the agonist muscle are the quadriceps and the antagonist are the hamstrings. During dorsiflexion the agonist muscle are the tibialis anterior and the antagonist are gastrocnemius/soleus. When plantar flexion is performed the agonist muscle is the gastrocnemius/soleus and the antagonist are

Flexion is the movement which decreases the angle between bones at a joint. The knee must be flexed for balance and momentum. This is done by lowering the gluteus maximus as it allows the knee to create this necessary movement. The elbow and wrists also need to be flexed to act on the pressure of the ball. The movement of extension is where the angle between bones at a joint is increased. Examples of this movement in a free throw are straightening the knee as you begin to release the ball and straightening the elbow when the ball is released. This follows with pronation which is when the hand and forearm rotate, making the palm face downwards. For example, when the ball is held by the palm and then is transferred off the palm in an upwards movement. This forces the wrist to flick in a downward

In regards to the spatial criterion of the movement, there was a statistical difference solely for the vertical end-point of the movement, which was moved in the direction of the body when the last goal was to utilize the object (M = 171.5 mm), as opposed to moving it in (M = 179.2 mm) a separate area. The change was additionally adjusted by the viewing condition and the hemispace of the movement. Altogether, when carrying out the movement in the direction of the right hemispace followed by the left hemispace, patient’s end-point of moving was nearer in distance to the body. Additionally when it came to performance from controls in both spatial and temporal criterions, there was a varying effect between the two. On the other hand, it was found that the patient did just as a satisfactory job in central viewing in grasping to move and grasping to

While toward your spine sucked in your belly, that you keep your spine stiffness and shoulder back your slim, it provides a more rational middle.

When comparing the 20 and 40 degree angles, the error was almost doubled in the dominant arm at 40 degrees than at 20. However, the non-dominant arm did not see a significant difference. Overall, it was seen that the non-dominant arms of the subjects had better accuracy in replicating the target positions based on proprioceptive feedback, especially when it came to larger scale movements. These findings are similar to other research, but more is still needed to fully comprehend the difference between dominant and non-dominant limbs in regards to proprioception and sensory

This paper examines the importance of proprioception exercises in the rehabilitation process of orthopedic injuries and conditions. Proprioception is the ability to coordinate movements and understand how much strength is needed to move a body part or object. There are several different ways to test the level of proprioception as well as a number of exercises to improve it. It is debatable whether or not these types of exercises are advantageous to a patient before surgery; however, it has been demonstrated to be greatly beneficial after surgery. Additionally, there is evidence that shows proprioception is greater in the non-dominant limbs of an individual. Nevertheless, visual feedback or hand-eye coordination is better on the dominant side.

This allows the head to move back and forth so it allows the joint to move up and down like the wrist.

Supports the weight of the body through the vertebral column and passes that force onto the hip bones