Abstract
Patients with peripheral artery disease (PAD) experience significant leg dysfunction. The effects of PAD on gait include shortened steps, slower walking velocity, and altered gait kinematics and kinetics, which may confound joint torques and power measurements. Spatiotemporal parameters and joint torques and powers were calculated and compared between 20 patients with PAD and 20 healthy controls using independent t tests. Separate analysis of covariance models were used to evaluate group differences after independently adjusting for gait velocity, stride length, and step width. Compared with healthy controls, patients with PAD exhibited reduced peak extensor and flexor torques at the knee and hip. After adjusting for all covariates combined, differences between groups remained for ankle power generation in late stance and knee flexor torque. Reduced walking velocity observed in subjects affected by PAD was closely connected with reductions in joint torques and powers during gait. Gait differences remained at the knee and ankle after adjusting for the combined effect of spatiotemporal parameters. Improving muscle function through exercise or with the use of assistive devices needs to be a key tool in the development of interventions that aim to enhance the ability of PAD patients to restore spatiotemporal gait parameters.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 19-24 |
| Number of pages | 6 |
| Journal | Journal of applied biomechanics |
| Volume | 35 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 2019 |
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Keywords
- Gait biomechanics
- Intermittent claudication
- Joint torques and powers
- Walking velocity
ASJC Scopus subject areas
- Biophysics
- Orthopedics and Sports Medicine
- Rehabilitation
Cite this
Gait mechanics differences between healthy controls and patients with peripheral artery disease after adjusting for gait velocity, stride length, and step width. / McCamley, John D.; Cutler, Eric L.; Schmid, Kendra K; Wurdeman, Shane R.; Johanning, Jason M; Pipinos, Iraklis I; Myers, Sara A.
In: Journal of applied biomechanics, Vol. 35, No. 1, 02.2019, p. 19-24.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Gait mechanics differences between healthy controls and patients with peripheral artery disease after adjusting for gait velocity, stride length, and step width
AU - McCamley, John D.
AU - Cutler, Eric L.
AU - Schmid, Kendra K
AU - Wurdeman, Shane R.
AU - Johanning, Jason M
AU - Pipinos, Iraklis I
AU - Myers, Sara A
PY - 2019/2
Y1 - 2019/2
N2 - Patients with peripheral artery disease (PAD) experience significant leg dysfunction. The effects of PAD on gait include shortened steps, slower walking velocity, and altered gait kinematics and kinetics, which may confound joint torques and power measurements. Spatiotemporal parameters and joint torques and powers were calculated and compared between 20 patients with PAD and 20 healthy controls using independent t tests. Separate analysis of covariance models were used to evaluate group differences after independently adjusting for gait velocity, stride length, and step width. Compared with healthy controls, patients with PAD exhibited reduced peak extensor and flexor torques at the knee and hip. After adjusting for all covariates combined, differences between groups remained for ankle power generation in late stance and knee flexor torque. Reduced walking velocity observed in subjects affected by PAD was closely connected with reductions in joint torques and powers during gait. Gait differences remained at the knee and ankle after adjusting for the combined effect of spatiotemporal parameters. Improving muscle function through exercise or with the use of assistive devices needs to be a key tool in the development of interventions that aim to enhance the ability of PAD patients to restore spatiotemporal gait parameters.
AB - Patients with peripheral artery disease (PAD) experience significant leg dysfunction. The effects of PAD on gait include shortened steps, slower walking velocity, and altered gait kinematics and kinetics, which may confound joint torques and power measurements. Spatiotemporal parameters and joint torques and powers were calculated and compared between 20 patients with PAD and 20 healthy controls using independent t tests. Separate analysis of covariance models were used to evaluate group differences after independently adjusting for gait velocity, stride length, and step width. Compared with healthy controls, patients with PAD exhibited reduced peak extensor and flexor torques at the knee and hip. After adjusting for all covariates combined, differences between groups remained for ankle power generation in late stance and knee flexor torque. Reduced walking velocity observed in subjects affected by PAD was closely connected with reductions in joint torques and powers during gait. Gait differences remained at the knee and ankle after adjusting for the combined effect of spatiotemporal parameters. Improving muscle function through exercise or with the use of assistive devices needs to be a key tool in the development of interventions that aim to enhance the ability of PAD patients to restore spatiotemporal gait parameters.
KW - Gait biomechanics
KW - Intermittent claudication
KW - Joint torques and powers
KW - Walking velocity
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UR - http://www.scopus.com/inward/citedby.url?scp=85060155656&partnerID=8YFLogxK
U2 - 10.1123/jab.2017-0257
DO - 10.1123/jab.2017-0257
M3 - Article
C2 - 29989479
AN - SCOPUS:85060155656
VL - 35
SP - 19
EP - 24
JO - Journal of Applied Biomechanics
JF - Journal of Applied Biomechanics
SN - 1065-8483
IS - 1
ER -