Kinematic Analysis of Head, Trunk, and Pelvis Movement When People Early After Stroke Reach Sideways

Verheyden, Geert; Duijnhoven, Hanneke J. R. van; Burnett, Malcolm; Littlewood, Janet D.; Kunkel, Dorit; Ashburn, Ann

doi:10.1177/1545968311401628

Cited by 31 publications

(24 citation statements)

References 19 publications

(19 reference statements)

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“…These specific modulations in COG dynamics in the rising on tiptoes and lateral reaching imagery are indicative of some correspondence between postural adjustments during actual performance and those observed during motor imagery: rising on tiptoes execution is accompanied by a striking reduction in the base of support, large forward-backward displacement of the COG (Nardone and Schieppati, 1988) and greater COG variability (2–6-fold higher than both reaching execution tasks); accordingly, execution of lateral reaching movements requires a large lateral trunk motion (Verheyden et al, 2011) and COP displacement (Brauer et al, 1999), along with a large increase in lateral COG variability (~2-fold higher than rising on tiptoes and forward reaching task). Comparing this COG dynamics pattern with that evoked during motor imagery, we suggest the existence of some execution-imagery “postural correspondence.”…”

Section: Discussionmentioning

confidence: 99%

“…The pattern of postural adjustments preceding or following movement is usually dependent of the action characteristics. For example, during the execution of a rise on tiptoe movement, a significant forward-backward motion of the body center of gravity can be observed (Nardone and Schieppati, 1988); likewise, when a subject is instructed to “reach sideward as far as possible,” large lateral trunk motion is required (Verheyden et al, 2011) and increases in lateral center of pressure (COP) displacement occurs (Brauer et al, 1999). Although there is some suggestive evidence that motor imagery modulates postural sway in a task-dependent manner (Rodrigues et al, 2003, 2010; Grangeon et al, 2011; Boulton and Mitra, 2013) this issue remains largely unexplored.…”

Section: Introductionmentioning

confidence: 99%

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Motor imagery modulation of body sway is task-dependent and relies on imagery ability

Lemos

Souza

Horsczaruk

et al. 2014

Front. Hum. Neurosci.

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In this study we investigate to what extent the effects of motor imagery on postural sway are constrained by movement features and the subject's imagery ability. Twenty-three subjects were asked to imagine three movements using the kinesthetic modality: rising on tiptoes, whole-body forward reaching, and whole-body lateral reaching. After each task, subjects reported the level of imagery vividness and were subsequently grouped into a HIGH group (scores ≥3, “moderately intense” imagery) or a LOW group (scores ≤2, “mildly intense” imagery). An eyes closed trial was used as a control task. Center of gravity (COG) coordinates were collected, along with surface EMG of the deltoid (medial and anterior portion) and lateral gastrocnemius muscles. COG variability was quantified as the amount of fluctuations in position and velocity in the forward-backward and lateral directions. Changes in COG variability during motor imagery were observed only for the HIGH group. COG variability in the forward-backward direction was increased during the rising on tiptoes imagery, compared with the control task (p = 0.01) and the lateral reaching imagery (p = 0.02). Conversely, COG variability in the lateral direction was higher in rising on tiptoes and lateral reaching imagery than during the control task (p < 0.01); in addition, COG variability was higher during the lateral reaching imagery than in the forward reaching imagery (p = 0.02). EMG analysis revealed no effects of group (p > 0.08) or task (p > 0.46) for any of the tested muscles. In summary, motor imagery influences body sway dynamics in a task-dependent manner, and relies on the subject' imagery ability.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Motor imagery modulation of body sway is task-dependent and relies on imagery ability

Lemos

Souza

Horsczaruk

et al. 2014

Front. Hum. Neurosci.

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“…In addition, the circumduction gait includes a combination of hiking and forward rotation of the pelvis [6]. These evidences highlighted that the sway amplitude and stability of pelvis are important in paretic patients, and could have an influence on circumduction gait pattern of lower limb and locomotor performance, as well as functional ability of upper limb activity and trunk control of stroke patients [7][8][9]. These studies emphasized the impact of pelvis on motor function and gait.…”

Section: Y Mao Et Al / Changes Of Pelvis Control With Subacute Strokementioning

confidence: 99%

Changes of pelvis control with subacute stroke: A comparison of body-weight- support treadmill training coupled virtual reality system and over-ground training

Mao¹,

Chen²,

Li³

et al. 2015

THC

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Abstract. BACKGROUND:Gait recovery is very important to stroke survivors to regain their independence in activity of daily life. OBJECTIVE: This study aimed to investigate the effects of virtual reality (VR) coupled body weight support treadmill training (BWSTT) on pelvic control at the early stage of stroke. METHODS: Kinematic and kinetic changes of pelvic motion were evaluated by a 3D gait analysis system and were compared to the results from over-ground walking training. Twenty-four patients having unilateral hemiplegia with subacute stroke were recruited to a VR coupled BWSTT group (n = 12) and a conventional therapy (CT) group (n = 12). Both of the groups received training of 20-40 min/day, 5 days/week, for 3 weeks. RESULTS:The results showed the tilt of pelvis in sagittal plane improved significantly (P = 0.038) after treatment in the BWSTT+VR group, in terms of decreased amplitude of anterior peak (mean, from 10.99• to 6.25 • ), while there were no significant differences in the control group. CONCLUSION: The findings suggested that VR coupled BWSTT gait training could decrease anterior tilt of pelvis in early hemiparetic persons following a modest intervention dose, and the training may have advantages over conventional over-ground gait training and can assist the therapists in correcting abnormal gait pattern of stroke survivors.

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“…Few studies have investigated the movement of the spine and pelvis separately. Verheyden et al reported on pelvic movement during lateral reach movements in the sitting position [36], and Messier et al described the movements of the upper trunk and pelvis when subjects touched a target placed in front of them with the forehead [37]. To execute the sit-to-stand movement smoothly, the pelvis must be leaned forward to flex the hip joint, and the trunk must be flexed in order to: (1) use the hip extension moment; (2) reduce the knee extension moment; and (3) project the center of gravity within the base of support [38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Pelvic Movement in Aging Individuals and Stroke Patients

Asai¹

2017

Clinical Physical Therapy

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The mobility of the lumbar spine (anteversion and retroversion) may be reflected in seated pelvic mobility. When sitting with the soles of the feet in contact with the floor, friction may restrict the flexion of the knees and, consequently, the pelvic anteversion. In general, joint mobility declines with advancing age. Lumbar spine mobility in anteversion and retroversion also decreases with advancing age. The first half of this chapter is based on a study that investigated the relationship between age and the maximum pelvic anteversion and the retroversion angles in healthy volunteers. The measurements were performed with the subject in a sitting position with free knee movement. On the other hand, the sitto-stand movement is one of the most mechanically demanding tasks undertaken during daily activity. The sacral sitting posture, which is a characteristic posture of stroke patients, is not ideal for smoothly executing the sit-to-stand movement. Stroke patients may adopt this posture due to the need to increase sitting stability. The second half of this chapter discusses a study that investigated the relationship between the pelvic anteversion and retroversion angles and the ability of stroke patients to perform the sit-to-stand movement.

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Kinematic Analysis of Head, Trunk, and Pelvis Movement When People Early After Stroke Reach Sideways

Abstract: Lateral reaching to the unaffected side early after stroke revealed a different pattern than normal and patients reached less far and moved at a slower speed. Specific training strategies to improve reaching are needed.

Cited by 31 publications

References 19 publications

Motor imagery modulation of body sway is task-dependent and relies on imagery ability

Motor imagery modulation of body sway is task-dependent and relies on imagery ability

Changes of pelvis control with subacute stroke: A comparison of body-weight- support treadmill training coupled virtual reality system and over-ground training

Pelvic Movement in Aging Individuals and Stroke Patients

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