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1.
Peter A. Altenburger Tracy A. Dierks Kristine K. Miller Stephanie A. Combs Marieke Van Puymbroeck Arlene A. Schmid 《Archives of physical medicine and rehabilitation》2013
Objectives
To determine if individuals with chronic stroke were able to sustain their peak gait speed during the 6-minute walk test (6MWT), and to explore this sustainability across community ambulation potential subgroups.Design
Prospective cross-sectional study.Setting
University-based research laboratory, hospitals, and stroke support groups.Participants
A sample of individuals with chronic stroke (N=48) completed a series of questionnaires and physical outcome measures, including gait mat assessment, during a single visit.Interventions
Not applicable; 1-time cross-sectional data collection.Main Outcome Measures
During the 6MWT, we measured peak gait speed and end gait speed to assess sustainability, along with beginning gait speed, total distance walked, and rating of perceived exertion. We also assessed maximum gait speed during the 10-meter walk test (10MWT). Finally, we examined these gait outcomes across the subgroups.Results
During the 6MWT, peak gait speed declined from .89m/s (SD=.38) to an end speed of .82m/s (SD=.36), whereas perceived exertion increased from 7.7 (SD=2.6) to 11.8 (SD=3.6). This peak gait speed was slower than the 10MWT maximum speed of 1.06m/s (SD=.51), but faster than the 6MWT beginning speed of .81m/s (SD=.34). The unlimited community ambulator subgroup was the primary contributor to sustainability differences.Conclusions
Predicting community ambulation potential based on the discrete gait speed from the 10MWT and endurance based on the average from the 6MWT might be incomplete if gait speed sustainability is not also assessed. 相似文献2.
Jochen Kressler Christine K. Thomas Edelle C. Field-Fote Justin Sanchez Eva Widerström-Noga Deena C. Cilien Katie Gant Kelly Ginnety Hernan Gonzalez Adriana Martinez Kimberley D. Anderson Mark S. Nash 《Archives of physical medicine and rehabilitation》2014
Objective
To explore responses to overground bionic ambulation (OBA) training from an interdisciplinary perspective including key components of neuromuscular activation, exercise conditioning, mobility capacity, and neuropathic pain.Design
Case series.Setting
Academic research center.Participants
Persons (N=3; 2 men, 1 woman) aged 26 to 38 years with complete spinal cord injury (SCI) (American Spinal Injury Association Impairment Scale grade A) between the levels of T1 and T10 for ≥1 year.Intervention
OBA 3d/wk for 6 weeks.Main Outcome Measures
To obtain a comprehensive understanding of responses to OBA, an array of measures were obtained while walking in the device, including walking speeds and distances, energy expenditure, exercise conditioning effects, and neuromuscular and cortical activity patterns. Changes in spasticity and pain severity related to OBA use were also assessed.Results
With training, participants were able to achieve walking speeds and distances in the OBA device similar to those observed in persons with motor-incomplete SCI (10-m walk speed, .11–.33m/s; 2-min walk distance, 11–33m). The energy expenditure required for OBA was similar to walking in persons without disability (ie, 25%–41% of peak oxygen consumption). Subjects with lower soleus reflex excitability walked longer during training, but there was no change in the level or amount of muscle activity with training. There was no change in cortical activity patterns. Exercise conditioning effects were small or nonexistent. However, all participants reported an average reduction in pain severity over the study period ranging between −1.3 and 1.7 on a 0-to-6 numeric rating scale.Conclusions
OBA training improved mobility in the OBA device without significant changes in exercise conditioning or in neuromuscular or cortical activity. However, pain severity was reduced and no severe adverse events were encountered during training. OBA therefore opens the possibility to reduce the common consequences of chronic, complete SCI such as reduced functional mobility and neuropathic pain. 相似文献3.
Objective
To determine if there was an increase in walk distance when two incremental shuttle walk tests (ISWTs) were performed at the commencement of a maintenance exercise program (0 month) and at three, six and 12-month assessments.Design
A prospective, longitudinal, repeated measures study in COPD.Setting
Single site, hospital outpatient physiotherapy department.Participants
Forty-eight participants (22 males) with COPD participated in the study: [baseline characteristics: mean (SD): FEV1 59 (19) % predicted; age 65 (8) years; BMI 26 (6) (kg/m2)].Intervention
Participants completed two ISWTs at zero, three, six and twelve months.Outcomes
Incremental shuttle walk distance (ISWD).Results
There was a significant increase in walk distance between two ISWTs at zero month (17 metres (95% CI: 7 to 26) and three months (18 metres (95% CI: 6 to 30), but not at six or 12 months.Conclusion
The increase in walk distance when a second ISWT was performed at zero and three months indicates the need to perform two ISWTs when participants are naïve to the test and at the three-month reassessment during a 12-month maintenance exercise program. 相似文献4.
Objective
To identify an assessment tool and its cut-off point for indicating ambulatory status 6 months after total hip arthroplasty (THA).Design
Cross-sectional study.Setting
Kyoto University Hospital.Participants
Eighty-eight patients who underwent unilateral THA.Main outcome measure
Lower-extremity muscle strength, hip range of motion and hip pain were measured 6 months after THA. The patients were divided into two groups according to their ability to walk 6 months after THA: an independent ambulation group and a cane-assisted ambulation group.Results
A stepwise multiple logistic regression analysis indicated that age and lower-extremity maximal load were significant variables affecting mid-term ambulatory status following THA. Receiver operating characteristic curve analyses revealed that ambulatory status following THA was indicated more accurately by leg extension strength (cut-off point = 8.24 N/kg, sensitivity = 92%, specificity = 82%, area under the curve = 0.93) than age.Conclusion
Lower-limb load force with a cut-off point of 8.24 N/kg is a reliable assessment tool for indicating ambulatory status 6 months after primary THA. 相似文献5.
Dayane Montemezzo Guilherme Augusto Fregonezi Danielle Aparecida Pereira Raquel Rodrigues Britto W. Darlene Reid 《Archives of physical medicine and rehabilitation》2014
Objective
To determine whether the impact of inspiratory muscle weakness on inspiratory muscle training (IMT) affects inspiratory function and exercise capacity in chronic heart failure (CHF) patients.Data Sources
Electronic searches were performed using the Cumulative Index to Nursing and Allied Health Literature, Cochrane Central Register of Controlled Trials, Cochrane Systematic Review, Embase, MEDLINE, and Physiotherapy Evidence Database (PEDro) databases up to August 2013.Study Selection
Articles were included if participants had CHF and were >18 years old; the design was a randomized controlled trial; intervention was IMT; measurements were of inspiratory muscle function or exercise capacity; and the articles were published in English, Portuguese, or Spanish. Of the 1455 articles identified in the database searches, 9 studies met the inclusion criteria.Data Extraction
Two independent reviewers selected and extracted information from articles and assessed the quality of the studies using the PEDro scale. The 2 reviewers discussed disagreements until consensus was achieved.Data Synthesis
Meta-analyses compared IMT with controls/sham for maximal inspiratory pressure, sustained maximal inspiratory pressure, 6-minute walk distance, peak oxygen consumption, and minute ventilation after IMT. Subgroup analyses compared those with and without muscle weakness. CHF with inspiratory muscle weakness showed greater gains in the 6-minute walk distance and peak oxygen consumption compared with those with normative maximal inspiratory pressure. The mean quality analysis score was 7.1, and scores ranged from 6 to 10.Conclusions
The results emphasize the importance of evaluating the inspiratory muscles to identify patients with CHF and inspiratory muscle weakness; subgroup that showed better results after IMT. 相似文献6.
7.
Victoria A. Stanhope Brian A. Knarr Darcy S. Reisman Jill S. Higginson 《Clinical biomechanics (Bristol, Avon)》2014
Background
Approximately two out of three individuals post-stroke experience walking impairments. Frontal plane compensatory strategies (i.e. pelvic hiking and circumduction) are observed in post-stroke gait in part to achieve foot clearance in response to reduced knee flexion and ankle dorsiflexion. The objective of this study was to investigate the relationship between self-selected walking speed and the kinematic patterns related to paretic foot clearance during post-stroke walking.Methods
Gait analysis was performed at self-selected walking speed for 21 individuals post-stroke. Four kinematic variables were calculated during the swing phase of the paretic limb: peak pelvic tilt (pelvic hiking), peak hip abduction (circumduction), peak knee flexion, and peak ankle dorsiflexion. Paretic joint angles were analyzed across self-selected walking speed as well as between functionally relevant ambulation categories (Household < 0.4 m/s, Limited Community 0.4–0.8 m/s, Community > 0.8 m/s).Findings
While all subjects exhibited similar foot clearance, slower walkers exhibited greater peak pelvic hiking and less knee flexion, ankle dorsiflexion, and circumduction compared to faster walkers (P < .05). Additionally, four of the fastest walkers compensated for poor knee flexion and ankle dorsiflexion through large amounts of circumduction.Interpretation
These findings suggest that improved gait performance after stroke, as measured by self-selected walking speed, is not necessarily always accomplished through gait patterns that more closely resemble healthy gait for all variables. It appears the ability to walk fast is achieved by either sufficient ankle dorsiflexion and knee flexion to achieve foot clearance or the employment of circumduction to overcome a deficit in either ankle dorsiflexion or knee flexion. 相似文献8.
9.
Nikolaos Chrysagis Emmanouil K. Skordilis Dimitra Koutsouki 《Archives of physical medicine and rehabilitation》2014
Objective
To examine the validity and clinical utility of functional assessments (1-minute walk test, 10-meter walk test, Timed Up & Go [TUG] test, Timed Up and Down Stairs [TUDS] test, sit-to-stand [STS] test, and lateral step-up [LSU] test).Design
Cross-sectional study.Setting
Four special schools for adolescents with physical disabilities.Participants
Adolescents with spastic tetraplegia and diplegia (at levels I–III) were selected through convenience sampling (N=35; mean age, 14.97±2.03y).Interventions
Not applicable.Main Outcome Measures
GMFM-88 (dimensions D and E), 1-minute walk, 10-meter walk, TUG, TUDS, STS, and LSU tests. Data were analyzed using Pearson intercorrelations, multiple regression analysis, and multivariate analysis of variance (MANOVA).Results
Significant moderate to high intercorrelations were found. Three significant positive predictors emerged (1-minute walk, 10-meter walk, and LSU) with the following regression equation: YGMFM-88 (dimensions D and E) = 5.708 + .402 × X1-minute walk + .920 × XLSU + .404 × X10-meter walk The MANOVA was significant (Λ=.163, F=14.732, P<.001, η2=.596), and post hoc comparisons revealed significant differences across Gross Motor Function Classification System Expanded and Revised levels in all paired comparisons for the 1-minute walk and LSU tests. For the 10-meter walk test, significant differences were evident in the level I versus level III and level II versus level III comparisons. No significant differences were found in the 10-meter walk test between levels I and II.Conclusions
These functional assessments (1-minute walk, LSU, and 10-meter walk tests) are simple to administer, quick, low cost, and user-friendly. Although these assessments are not a substitute for the criterion standard (GMFM-88), they may be used for a quick assessment in adolescents with cerebral palsy (levels I–III) either at school or during rehabilitation, especially when time is limited. 相似文献10.
Background
Individuals with incomplete spinal cord injury need to be assessed in different environments. The objective of this study was to compare lower-limb power generation in subjects with spinal cord injury and healthy subjects while walking on an inclined pathway.Methods
Eleven subjects with spinal cord injury and eleven healthy subjects walked on an inclined pathway at their natural gait speed and at slow gait speed (healthy subjects only). Ground reaction forces were recorded by force plates embedded in the inclined pathway and a 3-D motion analysis system recorded lower-limb motions. Data analysis included gait cycle parameters and joint peak powers. Differences were identified by student t-tests.Findings
Gait cycle parameters were lower in spinal cord injury subjects compared to healthy subjects at natural speed but similar at slow gait speed. Subjects with spinal cord injury presented lower power at the ankle, knee and hip compared to healthy subjects at natural gait speed while only the power generation at push-off remained lower when the two groups performed at similar speed.Interpretation
The most important differences are associated with the fact that individuals with spinal cord injury walk at a slower speed, except for the ankle power generation. This study demonstrated that, even with a good motor recovery, distal deficits remain and may limit the ability to adapt to uphill and downhill walking. Inclined pathways are indicated to train patients with spinal cord injury. Clinicians should focus on the speed of uphill and downhill walking and on the use of plantar flexors. 相似文献11.
Ming Wu Jill M. Landry Janis Kim Brian D. Schmit Sheng-Che Yen Jillian MacDonald 《Archives of physical medicine and rehabilitation》2014
Objective
To determine whether providing a controlled resistance versus assistance to the paretic leg at the ankle during treadmill training will improve walking function in individuals poststroke.Design
Repeated assessment of the same patients with parallel design and randomized controlled study between 2 groups.Setting
Research units of rehabilitation hospitals.Participants
Patients (N=30) with chronic stroke.Intervention
Subjects were stratified based on self-selected walking speed and were randomly assigned to the resistance or assistance training group. For the resistance group, a controlled resistance load was applied to the paretic leg at the ankle to resist leg swing during treadmill walking. For the assistance group, a load that assists swing was applied.Main Outcome Measures
Primary outcome measures were walking speed and 6-minute walking distance. Secondary measures included clinical assessments of balance, muscle tone, and quality of life. Outcome measures were evaluated before and after 6 weeks of training and at 8 weeks' follow-up, and compared within group and between the 2 groups.Results
After 6 weeks of robotic training, walking speed significantly increased for both groups, with no significant differences in walking speed gains observed between the 2 groups. In addition, 6-minute walking distance and balance significantly improved for the assistance group but not for the resistance group.Conclusions
Applying a controlled resistance or an assistance load to the paretic leg during treadmill training may induce improvements in walking speed in individuals poststroke. Resistance training was not superior to assistance training in improving locomotor function in individuals poststroke. 相似文献12.
Anne Therese Tveter Hanne Dagfinrud Tuva Moseng Inger Holm 《Archives of physical medicine and rehabilitation》2014
Objective
To provide reference values and reference equations for frequently used clinical field tests of health-related physical fitness for use in clinical practice.Design
Cross-sectional design.Setting
General community.Participants
Convenience sample of volunteers (N=370) between 18 and 90 years of age were recruited from a wide range of settings (ie, work sites, schools, community centers for older adults) and different geographic locations (ie, urban, suburban, rural) in southeastern Norway.Interventions
Not applicable.Main Outcome Measures
The participants conducted 5 clinical field tests (6-minute walk test, stair test, 30-second sit-to-stand test, handgrip test, fingertip-to-floor test).Results
The results of the field tests showed that performance remained unchanged until approximately 50 years of age; after that, performance deteriorated with increasing age. Grip strength (79%), meters walked in 6 minutes (60%), and seconds used on the stair test (59%) could be well predicted by age, sex, height, and weight in participants ≥50 years of age, whereas the performance on all tests was less well predicted in participants <50 years of age.Conclusions
The reference values and reference equations provided in this study may increase the applicability and interpretability of the 6-minute walk test, stair test, 30-second sit-to-stand test, handgrip test, and fingertip-to-floor test in clinical practice. 相似文献13.
David Simoni Gaia Rubbieri Marco Baccini Lucio Rinaldi Dimitri Becheri Tatiana Forconi Enrico Mossello Samanta Zanieri Niccolò Marchionni Mauro Di Bari 《Clinical biomechanics (Bristol, Avon)》2013
Background
Dual task paradigm states that the introduction of a second task during a cognitive or motor performance results in a decreased performance in either task. Treadmill walk, often used in clinical applications of dual task testing, has never been compared to overground walk, to ascertain its susceptibility to interference from a second task. We compared the effects of overground and treadmill gait on dual task performance.Methods
Gait kinematic parameters and cognitive performance were obtained in 29 healthy older adults (mean age 75 years, 14 females) when they were walking freely on a sensorized carpet or during treadmill walking with an optoelectronic system, in single task or dual task conditions, using alternate repetition of letters as a cognitive verbal task.Findings
During overground walking, speed, cadence, step length stride length, and double support time (all with P value < 0.001) and cognitive performance (number of correct words, P < 0.001) decreased substantially from single to dual task testing. When subjects walked at a fixed speed on the treadmill, cadence decreased significantly (P = 0.005), whereas cognitive performance remained unaffected.Interpretation
Both motor and cognitive performances decline during dual task testing with overground walking. Conversely, cognitive performance remains unaffected in dual task testing on the treadmill. In the light of current dual task paradigm, these findings may have relevant implication for our understanding of motor control, as they suggest that treadmill walk does not involve brain areas susceptible to interference from the introduction of a cognitive task. 相似文献14.
Daphne Wezenberg Lucas H. van der Woude Willemijn X. Faber Arnold de Haan Han Houdijk 《Archives of physical medicine and rehabilitation》2013
Objectives
To determine the relative aerobic load, walking speed, and walking economy of older adults with a lower-limb prosthesis, and to predict the effect of an increased aerobic capacity on their walking ability.Design
Cross-sectional.Setting
Human motion laboratory at a rehabilitation center.Participants
Convenience sample of older adults (n=36) who underwent lower-limb amputation because of vascular deficiency or trauma and able-bodied controls (n=21).Interventions
Not applicable.Main Outcome Measures
Peak aerobic capacity and oxygen consumption while walking were determined. The relative aerobic load and walking economy were assessed as a function of walking speed, and a data-based model was constructed to predict the effect of an increased aerobic capacity on walking ability.Results
People with a vascular amputation walked at a substantially higher (45.2%) relative aerobic load than people with an amputation because of trauma. The preferred walking speed in both groups of amputees was slower than that of able-bodied controls and below their most economical walking speed. We predicted that a 10% increase in peak aerobic capacity could potentially result in a reduction in the relative aerobic load of 9.1%, an increase in walking speed of 17.3% and 13.9%, and an improvement in the walking economy of 6.8% and 2.9%, for people after a vascular or traumatic amputation, respectively.Conclusions
Current findings corroborate the notion that, especially in people with a vascular amputation, the peak aerobic capacity is an important determinant for walking ability. The data provide quantitative predictions on the effect of aerobic training; however, future research is needed to experimentally confirm these predictions. 相似文献15.
Objective
To systematically review the psychometric evidence on the 2-minute walk test (2MWT).Data Sources
Electronic searches of databases including MEDLINE, CINAHL, Academic Search Premier, SPORTDiscus, PsycINFO, EMBASE, the Cochrane Library, and DARE were done until February 2014 using a combination of subject headings and free texts.Study Selection
Studies were included if psychometric properties of the 2MWT were (1) evaluated; (2) written as full reports; and (3) published in English language peer-reviewed journals.Data Extraction
A modified consensus-based standard for the selection of health measurement instruments checklist was used to rate the methodological quality of the included studies. A quality assessment for statistical outcomes was used to assess the measurement properties of the 2MWT.Data Synthesis
Best-evidence synthesis was collated from 25 studies of 14 patient groups. Only 1 study was found that examined the 2MWT in the pediatric population. The testing procedures of the 2MWT varied across the included studies. Reliability, validity (construct and criterion), and responsiveness of the 2MWT also varied across different patient groups. Moderate to strong evidence was found for reliability, convergent validity, discriminative validity, and responsiveness of the 2MWT in frail elderly patients. Moderate to strong evidence for reliability, convergent validity, and responsiveness was found in adults with lower limb amputations. Moderate to strong evidence for validity (convergent and discriminative) was found in adults who received rehabilitation after hip fractures or cardiac surgery. Limited evidence for the psychometric properties of the 2MWT was found in other population groups because of methodological flaws.Conclusions
There is inadequate breadth and depth of psychometric evidence of the 2MWT for clinical and research purposes—specifically, minimal clinically important changes and responsiveness. More good-quality studies are needed, especially in the pediatric population. Consensus on standardized testing procedures of the 2MWT is also required. 相似文献16.
Background
The management of peripheral arterial disease with intermittent claudication includes angioplasty, pharmaceutical therapy, risk factor modification and exercise therapy. Supervised exercise programmes are used sporadically but may improve the distance that an individual with claudication can walk. The purpose of this study was to evaluate the effectiveness of a 3-month supervised exercise programme on improving gait parameters in patients with intermittent claudication.Methods
12 participants were recruited (mean (SD) — age: 67.3 (6.8) years, height: 1.67 (0.09) m, mass: 79.4 (14.0) kg, ankle brachial pressure index: 0.73 (0.17)) from the local vascular unit and enrolled in a supervised exercise programme. Kinematic and kinetic data were collected at the following time points: pain-free walking, initial claudication pain, absolute claudication pain and after a patient-defined rest period. Data were collected before and after the 3-month supervised exercise programme.Findings
No significant differences were found in any of the gait parameters post-intervention including pain-free walking speed (P = 0.274), peak hip extension (P = 0.125), peak ankle plantarflexion (P = 0.254), or first vertical ground reaction force peak (P=0.654). No significant gait differences were found across different levels of pain pre- or post-intervention.Interpretation
The lack of improvement post-intervention observed suggests that the current exercise protocol was not tailored to elicit significant improvements in patients with intermittent claudication, specifically. The results indicate that exercise programmes may show improved results post-intervention if they are longer in duration and varied in intensity. Further research into more detailed muscle and biomechanical adaptations is needed to inform exercise programmes specific to this population. 相似文献17.
Victoria Hornyak Jennifer S. Brach David M. Wert Elizabeth Hile Stephanie Studenski Jessie M. VanSwearingen 《Archives of physical medicine and rehabilitation》2013
Objective
To describe the association between fear of falling (FOF) and total daily activity in older adults.Design
Cross-sectional observational study.Setting
Ambulatory clinical research training center.Participants
Community-dwelling older adults aged ≥64 years (N=78), who were independent in ambulation with or without an assistive device.Interventions
Not applicable.Main Outcome Measures
FOF was defined by self-reported fear ratings using the Survey of Activities and Fear of Falling in the Elderly and self-reported fear status determined by response to the following question: Are you afraid of falling? Physical function was assessed using the Late Life Function and Disability Instrument. Physical activity was recorded using an accelerometer worn on the waist for 7 consecutive days, and mean daily counts of activity per minute were averaged over the 7-day period.Results
Fear ratings were related to total daily activity (r=−.26, P=.02). The relation was not as strong as the relation of function and physical activity (r=.45, P<.001). When stratified by exercise status or functional status, fear was no longer related to total daily activity. Physical function explained 19% of the variance in physical activity, whereas the addition of fear status did not add to the explained variance in physical activity.Conclusions
FOF is related to total daily physical activity; however, FOF was not independently associated with physical activity when accounting for physical function. Some FOF may be reported as a limitation in function. 相似文献18.
Hiroki Watanabe Naoki Tanaka Tomonari Inuta Hideyuki Saitou Hisako Yanagi 《Archives of physical medicine and rehabilitation》2014
Objective
To compare the efficacy of gait training using a single-leg version of the Hybrid Assistive Limb (HAL) on the paretic side with conventional gait training in individuals with subacute stroke.Design
Randomized open controlled pilot trial.Setting
Hospitalized care.Participants
Convenience sample of 44 patients who met the criteria; 12 patients refused. After randomization (N=32), 10 patients withdrew and a total of 22 poststroke participants (HAL group: n=11; conventional group: n=11) completed the randomized controlled trial.Interventions
All participants received twelve 20-minute sessions in 4 weeks of either HAL (wearing the single-leg version of the HAL on their paretic side) or conventional (performed by skilled and experienced physical therapists) gait training.Main Outcome Measures
Outcome measures were evaluated prior to training and after 12 sessions. Functional Ambulation Category (FAC) was the primary outcome measure, whereas secondary outcome measures included maximum walking speed, timed Up and Go test, 6-minute walk distance, Short Physical Performance Battery, Fugl-Meyer Assessment of Lower Extremity, and isometric muscle strength (hip flexion and extension, knee flexion and extension).Results
No participants withdrew because of adverse effects. Participants who received gait training with the HAL showed significantly more improvement in the FAC than those who received conventional gait training (95% confidence interval, .02–.88; P=.04). Secondary measures did not differ between the 2 groups.Conclusions
The results obtained in this randomized controlled trial suggest that a gait training program with the HAL could improve independent walking more efficiently than conventional gait training. 相似文献19.
20.
Ana Esclarín-Ruz Monica Alcobendas-Maestro Rosa Casado-Lopez Guillermo Perez-Mateos Miguel Angel Florido-Sanchez Esteban Gonzalez-Valdizan Jose Luis R. Martin 《Archives of physical medicine and rehabilitation》2014