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Postural response latencies are related to balance control during standing and walking in patients with multiple sclerosis
Huisinga, JM and St George, RJ and Spain, R and Overs, S and Horak, FB, Postural response latencies are related to balance control during standing and walking in patients with multiple sclerosis, Archives of Physical Medicine and Rehabilitation, 95, (7) pp. 1390-1397. ISSN 0003-9993 (2014) [Refereed Article]
Copyright 2014 American Congress of Rahabilitation Medicine
Objective: 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).
Setting: University medical center.
Participants: 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.
Main Outcome Measures: Postural response latency, sway variables, trunk motion variables.
Results: 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).
Conclusions: 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.
|Item Type:||Refereed Article|
|Keywords:||gait, multiple sclerosis|
|Research Division:||Health Sciences|
|Research Group:||Sports science and exercise|
|Research Field:||Motor control|
|Objective Group:||Clinical health|
|Objective Field:||Clinical health not elsewhere classified|
|UTAS Author:||St George, RJ (Dr Rebecca St George)|
|Web of Science® Times Cited:||43|
|Downloads:||136 View Download Statistics|
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