Effect of walking velocity on segment coordination during pre-planned turns in healthy older adults

Akram, Sakineh B.; Frank, James S.; Fraser, Julia

doi:10.1016/j.gaitpost.2010.04.017

Cited by 31 publications

(30 citation statements)

References 14 publications

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“…It can be suggested that the delay in these timing variables throughout the turn may be a result of the bradykinesia experienced by people with PD [2]; however, the findings that those with relatively un-affected walking strategies still present with a delayed ''enbloc'' turn, often similar to those with more advanced symptoms [17,22], and walking velocity to be un-related to segment-co-ordination in the healthy elderly [47], suggests the perpendicular deficit of bradykinetic gait is unlikely to be the driver of timing and axial co-ordination deficits in people with PD.…”

Section: Turning In Pd 1385mentioning

confidence: 99%

A narrative review of turning deficits in people with Parkinson’s disease

Hulbert

Ashburn

Robert

et al. 2014

Disability and Rehabilitation

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Specific movement deficits in turning in people with PD can be categorised into axial and perpendicular deficits. Synthesis of the literature suggests the possibility of axial deficits driving secondary responses in the perpendicular segments. This should be explored when designing rehabilitation aimed at improving turning performance, as current therapy guidelines focus on exercises emphasising perpendicular aspects. Implications for Rehabilitation Turning performance is compromised in people with PD, which can lead to significant disability, falls and loss of function. Specific movement deficits can be categorised into perpendicular deficits (taking more steps and shorter steps and an altered turn strategy) and axial deficits (segment rigidity, altered segment co-ordination and timing, reduced segment rotation and the effects of altered posture). Axial deficits may drive secondary responses in the perpendicular segments during turning in people with PD. Therefore, specific focus should be made to the rehabilitation of the axial deficits alongside those of the perpendicular body segments in the design of multi-modal treatment strategies to improve turning performance.

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Section: Turning In Pd 1385mentioning

confidence: 99%

A narrative review of turning deficits in people with Parkinson’s disease

Hulbert

Ashburn

Robert

et al. 2014

Disability and Rehabilitation

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“…Information is also limited on how the lower limb inter-joint coordination is modulated with aging. Age-related differences in inter-joint coordination during obstacle crossing (Yen et al, 2009), segmental coordination during turning (Akram et al, 2010), and lower trunk coordination during walking (McGibbon and Krebs, 2001) have been investigated. Only one study reported that young and elderly adults accommodated lower limb inter-segmental coordination differently when walking on the ground with and without an asymmetrical leg loading (Byrne et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of walking speed on inter-joint coordination differs between young and elderly adults

Chiu¹,

Chou²

2012

Journal of Biomechanics

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“…Namely, at the initiation of the turning motion there is a change in the heading direction during the first two steps which reaches a steady state after the third step[30]. Others have established that there is a top-down sequence in the initiation of the segments of orientation during turning, starting at the head and continuing through the torso to the pelvis[31], and that the sequence is independent of the walking speed and the magnitude of the turn[32]. This is consistent with the pelvis and torso rotation patterns in the transversal plane as recorded in our study: in all experimental conditions associated with turning, the pelvis almost completely stops with respect to the ground in the middle of gait cycle, and starts to lag behind the torso, that on the other hand more closely follows the direction of turning.…”

Section: Discussionmentioning

confidence: 99%

Kinematics of turning during walking over ground and on a rotating treadmill

Pavčič

Matjačić

Olenšek

2014

J NeuroEngineering Rehabil

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BackgroundAfter neurological injury, gait rehabilitation typically focuses on task oriented training with many repetitions of a particular movement. Modern rehabilitation devices, including treadmills, augment gait rehabilitation. However, they typically provide gait training only in the forward direction of walking, hence the mechanisms associated with changing direction during turning are not practiced. A regular treadmill extended with the addition of rotation around the vertical axis is a simple device that may enable the practice of turning during walking. The objective of this study was to investigate to what extent pelvis and torso rotations in the transversal plane, as well as stride lengths while walking on the proposed rotating treadmill, resemble those in over ground turning.MethodsTen neurologically and orthopedically intact subjects participated in the study. We recorded pelvis and torso rotations in the transversal plane and the stride lengths during over ground turning and while walking on a rotating treadmill in four experimental conditions of turning. The similarity between pelvis and torso rotations in over ground turning and pair-matching walking on the rotating treadmill was assessed using intra-class correlation coefficient (ICC - two-way mixed single measure model). Finally, left and right stride lengths in over ground turning as well as while walking on the rotating treadmill were compared using a paired t-test for each experimental condition.ResultsAn agreement analysis showed average ICC ranging between 0.9405 and 0.9806 for pelvis and torso rotation trajectories respectively, across all experimental conditions and directions of turning. The results of the paired t-tests comparing left and right stride lengths showed that the stride of the outer leg was longer than the stride of the inner leg during over ground turning as well as when walking on the rotating treadmill. In all experimental conditions these differences were statistically significant.ConclusionsIn this study we found that pelvis rotation and torso rotation are similar when turning over ground as compared to walking on a rotating treadmill. Additionally, in both modes of turning, we found that the stride length of the outer leg is significantly longer than the stride length of the inner leg.Electronic supplementary materialThe online version of this article (doi:10.1186/1743-0003-11-127) contains supplementary material, which is available to authorized users.

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Effect of walking velocity on segment coordination during pre-planned turns in healthy older adults

Cited by 31 publications

References 14 publications

A narrative review of turning deficits in people with Parkinson’s disease

A narrative review of turning deficits in people with Parkinson’s disease

Effect of walking speed on inter-joint coordination differs between young and elderly adults

Kinematics of turning during walking over ground and on a rotating treadmill

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