8/18/2019 A Model of Impact Forces During Landing

1/8

A Model of Impact Forces

during Landing

from a Jumping Smash Activity

8/18/2019 A Model of Impact Forces During Landing

2/8

Introduction

• Jumping smash in badminton is categorized as

vertical jumping

• The objective of the study is to develop a

skeletal human model that can be used to obser ve the impact forces during landing phase in

a jumping smash activity 

• The relatively high number of landings using the

one-foot pattern might lead to loss of balance an

d subsequent injury especially to the ankle and

knee joints

8/18/2019 A Model of Impact Forces During Landing

3/8

MET!"

• M#TEM#TI$#% M!"E%%I&' (!) T*!

+E'ME&T+

8/18/2019 A Model of Impact Forces During Landing

4/8

RESULT

8/18/2019 A Model of Impact Forces During Landing

5/8

iscussion

• ,hile landing the force at the knee is

higher than that of the ankle in x-direction

• force at the ankle is higher than that of the

knee in y direction

• When a subject is airborne, the force at

the ankle is higher than that at the knee in

 x-direction, while the force acting at the an

kle in x-direction is higher than that in y dir 

ection.

8/18/2019 A Model of Impact Forces During Landing

6/8

• during landing the forces acting at the

ankle and knee joints are lower on the lan

ding foot compare to that of the other foot i 

n both x- and y-directions.

• during airborne phase those forces are

higher on the landing foot than that of the

other foot.

8/18/2019 A Model of Impact Forces During Landing

7/8

• This sho,s that there e.ists transfer of

forces from the landing foot to the other fo

ot during airborne and landing phases/

8/18/2019 A Model of Impact Forces During Landing

8/8

• The objective of fle.ion at the knee is to

e.tend the time before landing/ The time s

pan can reduce a high impact on the foot

during landing from a jumping activity/

•  # ma.imum impact force is one of the

causes of serious injury to the lo,er limb