Postural Response Latencies Are Related to Balance Control During Standing and Walking in Patients With Multiple Sclerosis

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• 作者：Jessie M. Huisinga ; PhD^a ; ^{jhuisinga@kumc.edu" class="auth_mail" title="E-mail the corresponding author} ; Rebecca J. St George ; PhD^b ; Rebecca Spain ; MD^b ; ^c ; Shannon Overs ; MD^b ; Fay B. Horak ; PhD^b
• 关键词：Electromyography ; Evoked potentials ; somatosensory ; Multiple sclerosis ; Rehabilitation ; Walking
• 刊名：Archives of Physical Medicine and Rehabilitation
• 出版年：2014
• 出版时间：July 2014
• 年：2014
• 卷：95
• 期：7
• 页码：1390-1397
• 全文大小：554 K

文摘

To understand and examine the relation between postural response latencies obtained during postural perturbations and representative measures of balance during standing (sway variables) and walking (trunk motion).

bsSec_2">Design

bspara0015">Cross-sectional.

bsSec_3">Setting

bspara0020">University medical center.

bsSec_4">Participants

bspara0025">Persons with multiple sclerosis (MS) (n=40) were compared with similar aged control subjects (n=20). There were 20 subjects with MS in the normal walking velocity group and 20 subjects with MS who had slow walking velocity based on a timed 25-foot walk (T25FW) of <5 seconds.

bsSec_5">Interventions

bspara0030">None.

bsSec_6">Main Outcome Measures

bspara0035">Postural response latency, sway variables, trunk motion variables.

bsSec_7">Results

bspara0040">We found that subjects with MS with both slow or normal walking velocities had significantly longer postural response latencies than the healthy control group. Postural response latency was not correlated with the T25FW. Postural response latency was significantly correlated with center of pressure sway variables during quiet standing (root mean square: ρ=.334, P=.04; range: ρ=.385, P=.017; mean velocity: ρ=.337, P=.038; total sway area: ρ=.393, P=.015). Postural response latency was also significantly correlated with motion of the trunk during walking (sagittal plane range of motion: ρ=.316, P=.05; SD of transverse plane range of motion: ρ=−.43, P=.006).

bsSec_8">Conclusions

bspara0045">These findings clearly indicate that slow postural responses to external perturbations in patients with MS contribute to disturbances in balance control during both standing and walking.