Postural responses during volitional and perturbed dynamic balance tasks in new lower limb amputees: a longitudinal study.

Abstract:

:This study examined the adaptation of postural responses in transtibial amputees during both perturbed and volitional dynamic balance tasks during a five-month period following discharge from inpatient rehabilitation. Seven unilateral transtibial amputees performed the sensory organisation test (SOT) and the limits of stability (LOS) test protocols on the NeuroCom Equitest(®) at one, three and six months post-discharge from in-patient rehabilitation. Overall balance ability improved significantly (p=0.01) following discharge as did utilisation of somatosensory input (p=0.01), with hip strategy use decreasing. Reaction time and movement velocity did not change significantly in the majority of target directions for the LOS test. However, endpoint COG excursion and directional control were significantly increased in a number of directions (p≤0.05). Although balance ability improved following discharge from rehabilitation, participants were heavily reliant upon vision in order to maintain balance. Following discharge from rehabilitation, amputees were seemingly able to increase the spatial and accuracy aspects of volitional exploration of their LOS. However, temporal aspects did not display any adaptation, suggesting a trade-off between these aspects of postural control. Further practice of performing volitional postural movements under increasing time pressure, for example using low-cost gaming tools, may improve balance ability and postural control.

journal_name

Gait Posture

journal_title

Gait & posture

authors

Barnett CT,Vanicek N,Polman RC

doi

10.1016/j.gaitpost.2012.07.023

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

319-25

issue

3

eissn

0966-6362

issn

1879-2219

pii

S0966-6362(12)00293-7

journal_volume

37

pub_type

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