Muscles in Motion
This muscle group is primarily responsible for knee extension during a squat.
What are the quadriceps?
This is the function of the biceps brachii at the elbow joint.
What is elbow flexion?
Prime mover in hip extension during a deadlift.
What is the gluteus maximus?
These muscles act as synergists during a bicep curl.
What are the brachialis and brachioradialis?
Antagonist to the quadriceps in knee flexion.
What are the hamstrings?
These muscles allow for shoulder abduction, especially during a lateral raise.
What are the deltoids (middle fibers)?
This is the action of the gluteus medius during single-leg stance.
What is hip abduction and pelvic stabilization?
Prime mover in elbow extension during a push-up.
What is the triceps brachii?
These two muscle groups work together to produce hip extension and knee flexion during running.
What are the gluteus maximus and hamstrings?
Antagonist to the biceps during elbow extension.
What is the triceps brachii?
During a pull-up, this large back muscle performs shoulder extension and adduction.
What is the latissimus dorsi?
This movement occurs at the ankle joint when you stand on your toes.
What is plantarflexion?
Prime movers in a split squat?
What are the Quads and Glutes?
During overhead press, these muscles synergize with the deltoids.
What are the triceps and trapezius?
Antagonist to the tibialis anterior during plantarflexion.
What are the gastrocnemius and soleus?
These muscles dorsiflex the foot, helping you clear the ground during gait.
What are the tibialis anterior muscles?
This is the main function of the rectus abdominis.
What is trunk flexion?
Prime mover for scapular retraction and depression.
What are the rhomboids and mid-low traps?
These muscles stabilize the scapula during a row.
What are the rhomboids, middle trapezius, and rotator cuffs?
These muscles oppose the action of the pectoralis major during horizontal abduction.
What are the posterior deltoids and lats?
These muscles work eccentrically to control trunk flexion when lowering from standing to a forward bend.
|What are the erector spinae?
These deep core muscles are responsible for increasing intra-abdominal pressure and spinal stability.
What are the transverse abdominis an diaphragm muscles?
Prime mover in shoulder horizontal adduction (e.g., bench press).
What is the pectoralis major?
During external rotation of the shoulder, this rotator cuff duo acts synergistically.
What are the infraspinatus and teres minor?
Antagonist to the spinal erectors during trunk flexion.
What are the rectus abdominis and obliques?