6 - Kinesiology

Question 1

What is a gait?

Answer 1

used to describe a pattern of movement of the limbs during locomotion

Question 2

What are some of the commonly used gaits?

Answer 2

walk, run, skip, hop

Question 3

What are the similarities in the walking and running gait?

Answer 3

• each leg moves through a stance and swing phase

- leg is retracted (hip extension) in stance phase and protracted (hip flexion) in the swing phase

Question 4

What is stride?

Answer 4

one complete gait cycle: right contact to right contact

Question 5

What is a step?

Answer 5

half a gait cycle: right contact to left contact

Question 6

What is walking?

Answer 6

always at least one foot in contact with the ground

Question 7

What is the difference between the walking and running gait?

Answer 7

walking - always one limb on the ground, double stance phase, leg relatively stiff

running - flight phase between each step, bouncing gait, leg relatively springy

Question 8

What is running?

Answer 8

single support phase followed by a flight phase

Question 9

Describe the running gait cycle

Answer 9

• step length and stride frequency are performance indicators
• during of stance phase will respect to flight phase
• greater muscle forces are required to support body weight

Question 10

Describe the stance phase during the running gait cycle

Answer 10

• leg is retracted via extension of the hip
• leg absorbs energy as the knee flexes and ankle dorsi flexes during the 1st half of the stance
• actively stretching the quads and triceps

Question 11

Describe the swing phase during the running gait cycle

Answer 11

• hip flexes to protract the limb and then begins to extend just prior to foot strike
• knee flexes as a result of the energy stored in the muscles at the toe-off
• knee extends in the 2nd half of the swing
• hip flexion and knee extension stretch biarticular hamstring muscles
• hamstring muscles undergo eccentric contraction