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Gait patterns in COPD

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Old 24th February 2015, 08:31 PM
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Default Gait patterns in COPD

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Gait patterns in COPD: the Rotterdam Study
Lies Lahousse et al
ERJ February 19, 2015
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Gait disturbances in patients with chronic obstructive pulmonary disease (COPD) may lead to disability and falls. As studies assessing gait kinematics in COPD are sparse, we investigated associations of COPD with various gait domains and explored a potential link with falling.

Gait was measured within the prospective, population-based Rotterdam Study (age ⩾55 years) using an electronic walkway and summarised into seven gait domains: Rhythm, Variability, Phases, Pace, Tandem, Turning and Base of Support. Rhythm is a temporal gait aspect that includes cadence and reflects how quickly steps are taken.

Persons with COPD (n=196) exhibited worse Rhythm (−0.21 SD, 95% CI −0.36– −0.06 SD) compared with persons with normal lung function (n=898), independent of age, sex, height, education, smoking or analgesic use, especially when dyspnoea and severe airflow limitation or frequent exacerbations (Global Initiative for Chronic Obstructive Lung Disease group D: −0.83 SD, 95% CI −1.25– −0.41 SD) were present. A lower forced expiratory volume in 1 s was associated with worse Rhythm and Pace, including lower cadence and gait velocity, respectively. Importantly, fallers with COPD had significantly worse Rhythm than nonfallers with COPD.

This study demonstrates that persons with COPD exhibit worse Rhythm, especially fallers with COPD. The degree of Rhythm deterioration was associated with the degree of airflow limitation, symptoms and frequency of exacerbations.
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Old 24th February 2015, 08:39 PM
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Default Re: Gait patterns in COPD

Related Thread:
Leg fatigue in heart failure
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Old 8th April 2016, 12:25 PM
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Default Re: Gait patterns in COPD

Gait mechanics in patients with chronic obstructive pulmonary disease.
Yentes JM, Schmid KK, Blanke D, Romberger DJ, Rennard SI, Stergiou N.
Respir Res. 2015 Feb 28;16:31
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BACKGROUND:
Chronic obstructive pulmonary disease (COPD) is characterized by the frequent association of disease outside the lung. The objective of this study was to determine the presence of biomechanical gait abnormalities in COPD patients compared to healthy controls while well rested and without rest.
METHODS:
Patients with COPD (N = 17) and aged-matched, healthy controls (N = 21) walked at their self-selected pace down a 10-meter walkway while biomechanical gait variables were collected. A one-minute rest was given between each of the five collected trials to prevent tiredness (REST condition). Patients with COPD then walked at a self-selected pace on a treadmill until the onset of self-reported breathlessness or leg tiredness. Subjects immediately underwent gait analysis with no rest between each of the five collected trials (NO REST condition). Statistical models with and without covariates age, gender, and smoking history were used.
RESULTS:
After adjusting for covariates, COPD patients demonstrated more ankle power absorption in mid-stance (P = 0.006) than controls during both conditions. Both groups during NO REST demonstrated increased gait speed (P = 0.04), stride length (P = 0.03), and peak hip flexion (P = 0.04) with decreased plantarflexion moment (P = 0.04) and increased knee power absorption (P = 0.04) as compared to REST. A significant interaction revealed that peak ankle dorsiflexion moment was maintained from REST to NO REST for COPD but increased for controls (P < 0.01). Stratifying by disease severity did not alter these findings, except that step width decreased in NO REST as compared to REST (P = 0.01). Standardized effect sizes of significant effects varied from 0.5 to 0.98.
CONCLUSIONS:
Patients with COPD appear to demonstrate biomechanical gait changes at the ankle as compared to healthy controls. This was seen not only in increased peak ankle power absorption during no rest but was also demonstrated by a lack of increase in peak ankle dorsiflexion moment from the REST to the NO REST condition as compared to the healthy controls. Furthermore, a wider step width has been associated with fall risk and this could account for the increased incidence of falls in patients with COPD.
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Old 8th June 2016, 06:31 PM
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Default Re: Gait patterns in COPD

Variability of gait speed during six minutes walking test in COPD and cystic fibrosis patients
Gregory Reychler et al
JFAS; Article in Press
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Highlights
•6MWT is related to higher heart rate, global walking speed and walking distance in CF than in COPD.
•The proportions of CF patients presenting walking speed decline over the 6 minutes were significantly lower than COPD patients.
•Walking speed and cardio-respiratory parameters evolution during 6MWT differ between COPD and CF patients.
Quote:
Background
Recently, gait speed reached an increasing importance in the management of respiratory patients. The aim of this retrospective study was to compare walking speed and physiological adaptations during the 6MWT in COPD and CF patients.

Methods
6MWT performed by COPD and CF patients were retrospectively reviewed. Global and sequential walking speeds were measured on six minutes and every sequence of two minutes respectively. Heart rate, oxygen saturation and dyspnea were analyzed.

Results
78 and 246 tests from CF and COPD patients were reviewed respectively. FEV1 (52.3 vs 56.2% pred) and FVC (72.5 vs 73.8% pred) were similar between both diseases. However, 6MWT in patients with CF were characterized by significantly higher heart rate, global walking speed and walking distance (+68%) while dyspnea evolutions and the proportions of patients presenting walking speed decline over the 6 minutes were significantly lower.

Conclusion
Walking speed and cardio-respiratory parameters evolution during 6MWT differ between COPD and CF patients.
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