ACE ACE Anatomy & Biomechanics 3

Question 1

Which muscle group is responsible for plantarflexion, which occurs during a calf raise or push-off in aerobics?

Accepted Answer

Gastrocnemius and soleus

Answer

The gastrocnemius and soleus (triceps surae) are the primary plantarflexors, pointing the foot downward and propelling the body during dynamic movements.

Question 2

What is the function of synergist muscles during a movement pattern?

Accepted Answer

They assist the agonist in performing the primary movement

Answer

Synergist muscles assist the primary mover (agonist) by contributing force or stabilizing adjacent joints to optimize movement efficiency.

Question 3

What joint action characterizes dorsiflexion, and why is adequate dorsiflexion important for squats?

Accepted Answer

Pulling the toes toward the shin; allows heels to stay down and knees to track over toes

Answer

Dorsiflexion pulls the foot toward the shin; adequate range is required in squats to keep heels grounded and maintain proper knee and hip alignment.

Question 4

Which anatomical landmark is used as a reference when instructing proper knee alignment during lower-body exercises?

Accepted Answer

Second toe (mid-foot line)

Answer

Instructors cue participants to track the knee over the second toe to prevent valgus (inward) collapse and reduce knee joint stress.

Question 5

What is the term for the position of the body when describing anatomical movements and directions?

Accepted Answer

Anatomical position

Answer

Anatomical position is the standard reference stance — standing upright, arms at sides, palms facing forward — used universally to describe body movements and locations.

ACE - American Council on Exercise Group Fitness Practice Test

ACE - American Council on Exercise Group Fitness Practice Test

ACE ACE Anatomy & Biomechanics 3