Dance Anatomy & Kinesiology

484

TABLE 8.5 Anatomical Analysis of a Lateral Tilt (hip, knee, ankle-foot, shoulder)

Movement

phases Joint movements

Contraction

type Prime movers: muscle group (sample muscles)

Tilt phase

Subphase: A to B

Right hip Hip abduction Concentric Hip abductors (gluteus medius, gluteus minimus)

Right knee (Knee extension maintained) Isometric Knee extensors (quadriceps femoris)

Right ankle-foot A-F plantar flexion Concentric A-F plantar flexors (gastrocnemius, soleus)

Subphase: B to C

Left hip Hip abduction Eccentric Hip adductors (adductor longus, adductor magnus)

Right hip (Hip abduction maintained) Isometric Hip abductors (gluteus medius, gluteus minimus)

Right knee (Knee extension maintained) Isometric Knee extensors (quadriceps femoris)

Right ankle-foot (A-F plantar flexion maintained) Isometric A-F plantar flexors (gastrocnemius, soleus)

Right and left

shoulders

Shoulder abduction Concentric Shoulder abductors (middle deltoid, supraspinatus)

Return phase

Subphase: C to D

Left hip Hip adduction Concentric Hip adductors (adductor longus, adductor magnus)

Right hip (Hip abduction maintained) Isometric Hip abductors (gluteus medius, gluteus minimus)

Right knee (Knee extension maintained) Isometric Knee extensors (quadriceps femoris)

Right ankle-foot (A-F plantar flexion maintained) Isometric A-F plantar flexors (gastrocnemius, soleus)

Right and left

shoulders

Shoulder adduction Eccentric Shoulder abductors (middle deltoid, supraspinatus)

Subphase: D to E

Right hip Hip adduction Concentric Hip adductors (adductor longus, adductor magnus)

Right knee (Knee extension maintained) Isometric Knee extensors (quadriceps femoris)

Right ankle-foot A-F dorsiflexion Concentric A-F dorsiflexors (tibialis anterior, extensor digitorum

longus)

A B C D E