Increased power generation in impaired lower extremities correlated with changes in walking speeds in sub-acute stroke patients

Brincks, John; Nielsen, Jørgen Feldbæk

doi:10.1016/j.clinbiomech.2011.08.007

Cited by 34 publications

(35 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Meanwhile, our results showed that the plantarflexors strength significantly increased in the BWSTT group. This is in line with the study of Brincks and Nielsen who found that instantaneous plantarflexion power and enough work done in the push-off phase ensure the generation of walking speed [33]. In addition, Pradon and coworkers also demonstrated that the muscle strength had significant positive association with walking distance in persons after stroke [34].…”

Section: Discussionsupporting

confidence: 84%

Change of Muscle Architecture following Body Weight Support Treadmill Training for Persons after Subacute Stroke: Evidence from Ultrasonography

Liu

Wang

et al. 2014

BioMed Research International

View full text Add to dashboard Cite

Although the body weight support treadmill training (BWSTT) in rehabilitation therapy has been appreciated for a long time, the biomechanical effects of this training on muscular system remain unclear. Ultrasonography has been suggested to be a feasible method to measure muscle morphological changes after neurological diseases such as stroke, which may help to enhance the understanding of the mechanism underlying the impaired motor function. This study investigated the muscle architectural changes of tibialis anterior and medial gastrocnemius in patients after subacute stroke by ultrasound. As expected, we found the effect of BWSTT on the muscular system. Specifically, the results showed larger pennation angle and muscle thickness of tibialis anterior and longer fascicle length of medial gastrocnemius after the training. The findings of this study suggest that the early rehabilitation training of BWSTT in subacute stage of stroke provides positive changes of the muscle architecture, leading to the potential improvement of the force generation of the muscle. This may not only help us understand changes of subacute stroke in muscular system but also have clinical implications in the evaluation of rehabilitation training after neurological insults.

show abstract

Section: Discussionsupporting

confidence: 84%

Change of Muscle Architecture following Body Weight Support Treadmill Training for Persons after Subacute Stroke: Evidence from Ultrasonography

Liu

Wang

et al. 2014

BioMed Research International

View full text Add to dashboard Cite

show abstract

“…Similarly, Mulroy et al 17 found that improved walking speeds during post-stroke treadmill training with body-weight support were associated with increased paretic hip flexion power. Multiple studies, which have evaluated a variety of post-stroke gait interventions, including task-oriented biofeedback 18 , virtual reality training 19 , task-oriented physical therapy with and without rehabilitation technology 20 , robotic gait training 21 , and treadmill gait retraining augmented via visual EMG-biofeedback 22 have also concluded that intervention-associated functional gains were largely attributable to an increase in paretic ankle power. Based on these data, the best explanations for the improvement in functional mobility reported in our earlier study 4 are improvements in peak hip power in pre-swing and peak ankle power at push-off.…”

Section: Discussionmentioning

confidence: 99%

Surface Peroneal Nerve Stimulation in Lower Limb Hemiparesis

Sheffler

Taylor

Bailey³

et al. 2015

American Journal of Physical Medicine &Amp; Rehabilitation

View full text Add to dashboard Cite

Objective To evaluate possible mechanisms for functional improvement and compare ambulation training with surface peroneal nerve stimulation (PNS) versus usual care (UC) via quantitative gait analysis. Design Randomized controlled clinical trial. Setting Teaching hospital of academic medical center. Participants 110 chronic stroke survivors (> 12-wks post-stroke) with unilateral hemiparesis. Interventions Subjects were randomized to a surface PNS device or UC intervention. Subjects were treated for 12-wks and followed for 6-months post-treatment. Main Outcome Measures Spatiotemporal, kinematic, and kinetic parameters of gait. Results Cadence (F3,153=5.81, p=.012), stride length (F3,179=20.01, p<.001), walking speed (F3,167=18.2, p<.001), anterior posterior ground reaction force (F3,164=6.61, p=.004), peak hip power in pre-swing (F3,156=8.76, p<.001), and peak ankle power at push-off (F3,149=6.38, p=.005) all improved with respect to time. However, peak ankle DF in swing (F3,184=4.99, p=.031) worsened. In general, the greatest change for all parameters occurred during the treatment period. There was no significant treatment group by time interaction effects for any of the spatiotemporal, kinematic, or kinetic parameters. Conclusions Gait training with PNS and usual care was associated with improvements in peak hip power in pre-swing and peak ankle power at push-off, which may have resulted in improved cadence, stride length, and walking speed; however, there were no differences between treatment groups. Both treatment groups also experienced a decrease in peak ankle DF in swing, though the clinical implications of this finding are unclear.

show abstract

“…Although previous studies have reported that the variable which best explained physical activity levels was walking speed 36 , and that plantar flexor strength has been identified as an important component of speed 37 , the work produced by the ankle plantar flexor muscles was the only variable which did not show differences between the groups. However, only 40 individuals were able to perform the ankle tests and this may have influenced the results, in addition to the high inter-subject variability.…”

Section: Discussionmentioning

confidence: 72%

Strength of the respiratory and lower limb muscles and functional capacity in chronic stroke survivors with different physical activity levels

Polese¹,

Pinheiro²,

Faria³

et al. 2013

Braz. J. Phys. Ther.

View full text Add to dashboard Cite

| Background: The assessment of strength and its relationships with functional capacity could contribute to more specific and effective disability management of stroke survivors. Objective: To compare and investigate associations between measures of strength and functional capacity of 98 chronic stroke survivors, stratified into three groups, according to their physical activity levels. Method: The physical activity levels were classified as impaired, moderately active, and active, based on their Human Activity Profile (HAP) scores. Strength was assessed by the maximal inspiratory (MIP) and expiratory (MEP) pressures and by the residual deficits (RDs) of work of the lower limb and trunk muscles, whereas functional capacity was evaluated by the distance covered during the six-minute walking test (6MWT). Results: One-way analyses of variance revealed significant differences between the groups, except between the active and moderately active groups regarding the RDS of the hip and knee flexors/extensors and ankle dorsiflexors (2.91

show abstract

Increased power generation in impaired lower extremities correlated with changes in walking speeds in sub-acute stroke patients

Cited by 34 publications

References 27 publications

Change of Muscle Architecture following Body Weight Support Treadmill Training for Persons after Subacute Stroke: Evidence from Ultrasonography

Change of Muscle Architecture following Body Weight Support Treadmill Training for Persons after Subacute Stroke: Evidence from Ultrasonography

Surface Peroneal Nerve Stimulation in Lower Limb Hemiparesis

Strength of the respiratory and lower limb muscles and functional capacity in chronic stroke survivors with different physical activity levels

Contact Info

Product

Resources

About