| Muscles |
Actions |
Lever |
Adavntages |
| gracilis |
adduction, internal rotation |
Type III (II w/knee bent) |
high force, high velocity, hybrid ROM and mechanical advantage |
| sartorius |
hip and knee flexion, external rotation hip, eternal rotation knee |
Type III lever |
low force, high velocity, hybrid ROM and mechanical advantage |
| tensor facia latae |
internal rotation, abduction, hip flexion |
Type III ROM |
low force, low velocity, ROM |
| rectus femoris |
hip flexion, knee extension |
Type III |
mechanical advantage, high force, high velocity |
| biceps femoris |
hip flexion, knee extension, adduction |
Type III |
high force, high velocity, ROM |
| semimembranosis |
hip flexion, knee extension, external rotation at knee |
Type III (II if resistance on femur) |
good force, hybrid ROM and mechanical avantage, high velcity |
| semitendinosis |
hip extension, knee flexion, internal rotation at knee |
Type III (II if resistance at femur) |
good force, high velocity, hybrid ROM and mechanical advantage |
| adductor magnus, longus and brevis |
adduction, internal rotation, minimal hip flexion and extension (magnus) |
Type III |
ROM, higher velocity, mechanical advantage and force w/increase in size, |
| gastrocnemius |
knee flexion (initiator), plantarflexion |
type II (knee flexion), type III (plantarflexion) |
mechanical advantage (type II), ROM (type III), high force, high velocity |
| soleus |
plantarflexion (esp. knee bent) |
type III or type II |
high force, high velocity, ROM or mechanical advantage |
| tibialis anterior |
dorsiflexion, inversion |
type II |
mechanical advantage, high force, high veloity |
| iliopsoas |
hip flexion, adduction, external rotation |
Type III |
high force, high velocity, mechanical advantage |
| pectineus |
adduction, external and minimal internal rotation |
Type III |
ROM |
| gluteus maximus |
hip extension, adduction, external rotation |
Type III |
high force, high velocity, ROM |
| gluteus medius and minimus |
external and external rotation, abduction |
Type III |
ROM, moderate force, high velocity |
| hip external rotators |
hip external rotation |
Type III |
ROM, moderate force, low velocity |
| popliteus |
knee flexion, internal rotation |
Type III |
ROM, high force (internal rotation), low velocity |
| peroneus longus and brevis |
eversion |
type II |
high velocity, mechanical avantage, high force |
| peroneus tertius |
eversion, dorsiflexion |
type II |
mechanical advantage, low force and velocity |
| tibialis posterior |
inversion, plantarflexion |
type II |
mechanical advantage, high force, high velocity |
| vastus lateralis |
knee extension |
type III lever |
high force, hybrid, high velocity |
| vastus intermedius |
knee extension |
type III lever |
high force, high velocity, hybrid |
| vastus medialis |
knee extension and patellar tracking |
type III lever |
high force, high velocity, hybrid |
Spanish 3
