slide1
Download
Skip this Video
Download Presentation
Identifying Different

Loading in 2 Seconds...

play fullscreen
1 / 19

Identifying Different - PowerPoint PPT Presentation


  • 195 Views
  • Uploaded on

Identifying Different. Types of Fallers. through Gait Analysis. Heather Hodnett Dr. Michael Pavol, Department of Nutrition and Exercise Sciences Oregon State University Howard Hughes Medical Institute. Older Adult Falls are an Important Concern.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Identifying Different' - arne


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Identifying Different

Types of Fallers

through Gait Analysis

Heather Hodnett

Dr. Michael Pavol,

Department of Nutrition and Exercise Sciences

Oregon State University

Howard Hughes Medical Institute

slide2

Older Adult Falls are an Important Concern

  • Each year, about 1/3 of adults over age 65 fall
  • 20-30% of older adults who fall suffer moderate to severe injuries, and 2% of falls result in broken hips
  • 1 in 5 older adults who break a hip die within 1 yr
  • In 2000, the annual medical cost of falls was $19 billion, and it is expected to increase to $54 billion by 2020
slide3

Gait Matters

  • Most injurious falls occur while walking
  • Older adults are more likely to fall if they:
    • Walk slower
    • Take smaller steps
    • Walk with narrower strides
    • Have weaker hip abductors
slide4

Forward

Sideways

Sideways

Backward

Fall Direction Matters

  • Falling sideways increases risk of fracture 6-fold (with direct hip impact, the risk increases 20- to 50-fold)
  • Propensity to fall sideways

has been related to a

narrow stride width

  • Unclear if other aspects

of gait affect fall direction

slide5

Research Question

Do certain aspects of older adults’ gait patterns play a role in the directions they are most likely to fall?

If so, what are those aspects?

slide6

Hypothesis

Sideways fallers will show lesser mediolateral stability during gait and have weaker hip abductors than forward/backward fallers and non-fallers.

slide7

Purpose

To determine whether and how the gait patterns and hip abductor strengths of older adults differ according to the direction of falls suffered within the past year

slide8

The Subjects

  • Healthy adults over age 65
  • Walk unassisted
  • No conditions that alter balance or gait
  • Competent and in a sound mental state
  • Fit into one of three groups:
    • Non-fallers (N=17)
    • Forward/backward fallers (N=9)
    • Side fallers (N=3)
slide9

Data Collection

  • Motion capture system
    • Body segment movements
    • 9 cameras
    • 41 markers
    • 60 Hz
  • Force plates
    • Ground reaction forces
    • 600 Hz
slide10

Walking Trials

  • ~ 13-foot path
  • Even, level surface
  • Preferred walking speed
  • One step per force plate
slide12

Data Considerations

  • Joint angles, rotations, & moments
  • Trunk sway
  • Center of mass (COM)

distance from the outside

of the foot

  • Hip abductor strength
  • Compare groups using ANOVA
slide15

Discussion

  • Expected lesser mediolateral stability in side fallers
    • Forward/backward fallers less stable
      • May be related to narrow stride width
    • Side fallers not different than non-fallers
      • May have adjusted gait for safety
      • Only 3 side fallers tested so far
  • Expected lesser abduction strength in side fallers
    • No difference between groups
slide16

Next Steps

  • Finish current study
  • Further research to determine differences between sideways, forward/backward, and non-fallers
  • Fall risk classification based on gait
  • Possible interventions for decreasing sideways fall risk in older adults
slide17

Conclusions

  • No conclusive results yet
  • Data suggest:
    • Forward/backward fallers exhibit lesser mediolateral stability in gait
    • Hip abduction strength is not related to fall direction or fall incidence
slide18

Acknowledgements

  • Dr. Michael Pavol
  • Dr. Kevin Ahern
  • HHMI Program
  • Cripps Scholarship Fund
  • LIFE Scholars Program
  • Center for Healthy Aging Research
ad