Phases of Running Flashcards
What are the 4 phases of ground contact
- Foot strike
- Initial Support
- Mid-stance
- Toe-off
What happens to the knee angle during foot strike?
in front of knee
knee flexed (10 degrees)
What happens to the knee angle during initial support?
in front of knee
flexion (cushioning)
What happens to the knee angle during mid-stance?
in front of knee
peak flexion (38 degrees)
What happens to the knee angle during toe-off?
in front of knee
extending (13 degrees)
What happens to the knee angle during swing phase?
in front of knee
flexion followed by extension
What happens to the ankle angle during foot strike?
90 degrees
What happens to the ankle angle during initial support?
small plantar flexion
What happens to the ankle angle during mid-stance?
peak dorsi-flexion (108 degrees)
What happens to the ankle angle during toe-off?
plantar flexion
What happens to the ankle angle during swing phase?
from plantar to dorsi flexion
why are joint angles in running important?
assess effects of train / footwear
provide reference values for a range of populations
what effect does a heel lift have on peak ankle dorsi-flexion?
reduces it significantly without changing knee angle
