Gait

Question 1

Mechanical Goal of: Initial Contact

Answer 1

Lower forefoot to ground
Continue deceleration
Preserve longitudinal arch of foot

Question 2

Active Muscle Groups: Initial Contact

Answer 2

Ankle dorsiflexiors (eccentric)
Hip extensors (eccentric)
Intrinsic muscles of foot (eccentric)
Long tendons of foot (eccentric)

Question 3

Mechanical Goal of: Loading Response

Answer 3

Accept weight
Decelerate mass
Stabilize pelvis
Preserve longitudinal arch of foot

Question 4

Active Muscle Group of: Loading Response

Answer 4

Knee extensors (eccentric to isometric)
Ankle plantarflexors (eccentric contraction)
Hip abductors (isometric)
Intrinsic muscles of foot (isometric)
Long tendons of foot (isometric)

Question 5

Mechanical Goal of: Midstance

Answer 5

Stabilize knee
Control dorsiflexion (preserve momentum)
Stabilize pelvis
Preserve longitudinal arch of foot

Question 6

Active Muscle Group of: Midstance

Answer 6

Knee extensors (isometric)
Ankle plantarflexor (eccentric)
Hip abductors (isometric)
Intrinsic muscles of foot (isometric)

Question 7

Mechanical Goal of: Terminal Stance

Answer 7

Accelerate mass
Stabilize pelvis
Preserve arches of foot, fix forefoot

Question 8

Active Muscle Group of: Terminal Stance

Answer 8

Ankle plantarflexors (concentric contraction)
Hip abductors (isometric)
Intrinsic muscles of foot (concentric)
Intrinsic muscles of foot (isometric)

Question 9

Mechanical Goal of: Preswing Stance

Answer 9

Accelerate mass
Preserve arches of foot, fix forefoot
Decelerate thigh, prepare for swing

Question 10

Active Muscle Group of: Preswing Stance

Answer 10

Long flexors of digits (eccentric to concentric)
Intrinsic muscles of foot (isometric to concentric)
Long tendons of foot (concentric)
Flexors of hip (eccentric contraction)

Question 11

Mechanical Goal of: Initial Swing

Answer 11

Accelerate thigh, vary cadence, clear foot

Question 12

Active Muscle Group of: Initial Swing

Answer 12

Flexor of hip (concentric)
Ankle dorsiflexors (concentric)

Question 13

Mechanical Goal of: Midswing Phase

Answer 13

clear foot

Question 14

Active Muscle Group of: Midswing Swing

Answer 14

Ankle dorsiflexors (concentric)

Question 15

Mechanical Goal of: Terminal Swing

Answer 15

Decelerate thigh, decelerate leg, position foot, extend knee to place foot, prepare for contact

Question 16

Active Muscle Group of: Terminal Swing

Answer 16

Hip extensors (eccentric contractions)
Knee flexors (eccentric contractions)
Ankle dorsiflexors (isometric contractions)
Knee extensors (concentric contractions)