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Do foot orthotics have an immediate ...

Jagger, Kristen Lyn.

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Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury?

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury?/
Author:	Jagger, Kristen Lyn.
Description:	108 p.
Notes:	Chair: John W. Chow.
Contained By:	Dissertation Abstracts International64-03B.
Subject:	Health Sciences, Rehabilitation and Therapy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3084007
ISBN:	9780496318148

Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury?
Jagger, Kristen Lyn.

Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury? - 108 p.

Chair: John W. Chow.

Thesis (Ph.D.)--University of Florida, 2002.

Research regarding the effectiveness of foot orthotics during functional activities is primarily limited to the able-bodied population. No research determining the impact of orthotic intervention on specific gait mechanics of ambulatory individuals after spinal cord injury (SCI) has been identified, even though this group often exhibits poor foot and ankle alignment. Purpose. This research was designed to ascertain if orthotic intervention had an immediate effect on gait measures and frontal plane kinematics and kinetics in ambulatory individuals with SCI. Methods. Nine community ambulators with an American Spinal Injury Association "D" classification were recruited. Prior to testing subjects were measured and fitted with temporary orthotics. Testing included both shoe-only and orthotic conditions, administered in random order. A six-camera optical motion analysis system captured three-dimensional motion at 120Hz, while force plate and electromyographic (EMG) data, collected at 1200Hz, provided information regarding ground reaction forces and muscle activity, respectively. An inverse dynamic approach was used to calculate frontal plane joint angles, moments, and powers at the ankle, knee, and hip. Mean and peak EMG data were recorded from five subjects for qualitative comparison. Statistics. A 2 x 2 doubly multivariate repeated measures multivariate analysis of variance was used to discern the effect of orthotics on each leg. Results. Orthotics significantly increased the stance duration, step duration, and ratio of stance on the less-involved limb. Orthotics reduced the gait velocity, swing duration, maximum hip abduction angle, maximum ankle power generation, and the maximum knee power absorption on the less-involved limb. Only the maximum ankle supination angle from the more-involved limb was decreased by orthotic intervention. Qualitative results of the mean and peak EMG amplitudes suggest increases in tibialis anterior and rectus femoris muscle activity with orthotic intervention. Conclusions . There is an immediate effect of orthotic intervention on selected gait and biomechanical variables within the less-involved limb. There is less immediate influence on the more-involved extremity. Results of this study justify further research in this area.

ISBN: 9780496318148Subjects--Topical Terms:

1017926
Health Sciences, Rehabilitation and Therapy.

Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury?
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035 $a (UMI)AAI3084007
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100 1 $a Jagger, Kristen Lyn. $3 1294632
245 1 0 $a Do foot orthotics have an immediate affect on the gait mechanics of individuals with chronic incomplete spinal cord injury?
300 $a 108 p.
500 $a Chair: John W. Chow.
500 $a Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1213.
502 $a Thesis (Ph.D.)--University of Florida, 2002.
520 $a Research regarding the effectiveness of foot orthotics during functional activities is primarily limited to the able-bodied population. No research determining the impact of orthotic intervention on specific gait mechanics of ambulatory individuals after spinal cord injury (SCI) has been identified, even though this group often exhibits poor foot and ankle alignment. Purpose. This research was designed to ascertain if orthotic intervention had an immediate effect on gait measures and frontal plane kinematics and kinetics in ambulatory individuals with SCI. Methods. Nine community ambulators with an American Spinal Injury Association "D" classification were recruited. Prior to testing subjects were measured and fitted with temporary orthotics. Testing included both shoe-only and orthotic conditions, administered in random order. A six-camera optical motion analysis system captured three-dimensional motion at 120Hz, while force plate and electromyographic (EMG) data, collected at 1200Hz, provided information regarding ground reaction forces and muscle activity, respectively. An inverse dynamic approach was used to calculate frontal plane joint angles, moments, and powers at the ankle, knee, and hip. Mean and peak EMG data were recorded from five subjects for qualitative comparison. Statistics. A 2 x 2 doubly multivariate repeated measures multivariate analysis of variance was used to discern the effect of orthotics on each leg. Results. Orthotics significantly increased the stance duration, step duration, and ratio of stance on the less-involved limb. Orthotics reduced the gait velocity, swing duration, maximum hip abduction angle, maximum ankle power generation, and the maximum knee power absorption on the less-involved limb. Only the maximum ankle supination angle from the more-involved limb was decreased by orthotic intervention. Qualitative results of the mean and peak EMG amplitudes suggest increases in tibialis anterior and rectus femoris muscle activity with orthotic intervention. Conclusions . There is an immediate effect of orthotic intervention on selected gait and biomechanical variables within the less-involved limb. There is less immediate influence on the more-involved extremity. Results of this study justify further research in this area.
590 $a School code: 0070.
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