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nasm chapter 4 movement science


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anterior tibialis
dorsiflexion inversion
posterior tibialis
plantarflexion inversion
peroneus longus
plantarflexion eversion
biceps femoris long head
knee flexion hip extension tibial external rotation
biceps femoris short head
knee flexion tibial external rotation
semimembranosus, semitendinosus
knee flexion, hip extension, tibial internal rotation
knee extension
rectus femoris
knee extension, hip flexion
adductor longus, magnus(anterior fibers), brevis
hip adduction, flexion, internal rotation
adductor magnus posterior fibers
hip adduction, extension, external rotation
hip adduction, flexion, internal rotation
(tibial internal rotation)
hip adduction, flexion, internal rotation
gluteus medius anterior fibers
hip abduction, internal rotation
gluteus medius posterior fibers
hip abduction and external rotation
gluteus minimus
hip abduction and internal rotation
hip flexion, abduction and internal rotation
gluteus maximum
hip extension and external rotation
hip flexion, external rotation; spine extension, rotation (lumbar)
hip flexion, external rotation, abduction; knee flexion internal rotation
hip external rotation, abduction and extension
obturator internus
hip external rotation, abduction
obturator externus
external rotation
hip external rotation
quadratus femoris
hip external rotation
rectus abdominis
spinal flexion, lateral flexion, rotation
external oblique
spinal flexion, lateral flexion, contralateral rotation
inernal oblique
spinal flexion (bilateral)
lateral flexion, ipsilateral rotation
transversus abdominis
increases intraabdominal pressure, supports abdominal viscera
pulls central tendon inferiorly, increasing volume in thoracic cavity
erector spinae
spinal extension, rotation, lateral flexion
quadratus lumborum
lateral flexion of spine
spinal flexion, lateral flexion; extension and contralateral rotation of the head, primarily proprioception and stabilization
spinal extension and contralateral rotation
spinal extension and contralateral rotation
spinal lateral flexion
intersegmental spinal extension
latissimus dorsi
shoulder extension, adduction, internal rotation; bilaterally spinal extension
serratus anterior
scapular protraction
scapular retraction, downward rotation
lower trapezius
scapular depression
middle trapezius
scapular retraction
upper trapezius
cervicle extension, lateral flexion, rotation
levator scapulae
cervical extension, lateral flexion and ipsilateral rotation when scapulae is anchored; assists in elevation and downward rotation of scapulae
pec major clavicular fibers
shoulder flexion
pec major transverse plane
adduction shoulder
pec major
internal rotation shoulder
pec minor
protraction of scapula
deltoid anterior
shoulder flexion, internal rotation
deltoid middle
shoulder abduction
posterior deltoid
shoulder extension, external rotation
t minor
shoulder external rotation
shoulder external rotation
shoulder internal rotation
abduction of arm
teres major
shoulder internal rotation, adduction, extension
cervical flexion, rotation, lateral flexion
scalees anterior fibers, posterior fibers
cervical flexion, rotation, lateral flexion; assists rib elevation during inhalation
scalenes middle fibers
cervical flexion, rotation, lateral flexion
longus colli
cervical flexion, lateral flexion, ips rotation
longus capitus
cervical flexion , lateral flexion
length tension relationship
length at which muscle can produce greatest force
force velocity curve
ability of muscles to produce force with increasing velocity
as velocity of a concentric muscle contraction increases its ability to produce force
force couple
synergistic action of muscles to produce movement around a joint
trunk rotation
internal and external obliques
upward rotation of scapula
upper trapezius and lower serratus anterior
hip and knee extension during walking, running, stairs etc
gluteus max, quads, calf
plantarflexion foot
gastroc, posterior tibialis, peroneus longus
shoulder abduction
deltoid, rotator cuff
muscle synergies
groups of muscles that are recruited by the cns to produce movement. simplifies movement by allowing mm and joints to operate as a functional unit
lat pulldown
lats, rotator cuff, bicep
quad, hams, glut max
shoulder press
deltoid, rotator cuff , trap
cumulativve neural input to cns from all mechanoreceptors that sense position and limb movements

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