Skeletal Muscle Dysfunction in Patients with Chronic Obstructive Pulmonary Disease

Kim, Ho Cheol; Lee, Gi Dong; Hwang, Young Sil

doi:10.4046/trd.2010.68.3.125

Cited by 78 publications

(99 citation statements)

References 185 publications

(123 reference statements)

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“…Meanwhile, in view of complex disease pathophysiology, it has been shown that there are various potential factors that could affect the physical activity and/or quality of life in patients with COPD. These factors include skeletal muscle abnormalities (24), concomitant depression/anxiety (25,26), other co-morbidities and/or exacerbations (27). In our study significant correlations (P<0.05) were found between six-minute walk distance and total SGRQ-score (r=−0.50) and its components including symptoms, activity and impacts (r=−0.36, −0.52 and −0.43 respectively).…”

Section: Discussionmentioning

confidence: 99%

Correlation of cardiopulmonary exercise testing parameters with quality of life in stable COPD patients

Mirdamadi¹,

Rahimi²,

Safavi³

et al. 2016

J. Thorac. Dis.

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Background: The precise head to head relationships between Cardio-pulmonary exercise testing (CPET) parameters and patients' daily symptoms/activities and the disease social/emotional impact are less well defined. In this study, the correlation of COPD daily symptoms and quality of life [assessed by St. George's Respiratory Questionnaire (SGRQ)] and COPD severity index (BODE-index) with CPET parameters were investigated. Methods: Symptom-limited CPET was performed in 37 consecutive COPD (GOLD I-III) subjects during non-exacerbation phase. The SGRQ was also completed by each patient. Results: SGRQ-score correlated negatively with FEV1 (r=−0.49, P<0.01), predicted maximal workrate (%WR-max) (r=−0.44, P<0.01), V'O 2 /WR (r=−0.52, P<0.01) and breathing reserve (r=−0.50, P<0.01). However it did not correlate with Peak-V'O 2 % predicted (r=−0.27, P=0.10). In 20 (54.1%) subjects in which leg fatigue was the main cause for stopping the test, Peak-V'O 2 , %WR-max, HR-Reserve and Breathing reserve were higher (P=0.04, <0.01, 0.04 and <0.01 respectively) than the others. There was also a significant correlation between BODE-index and ∆VO 2 /∆WR (r=−0.64, P<0.001) and breathing-reserve (r=−0.38, P=0.018). Conclusions: The observed relationships between CPET parameter and daily subjective complaints in COPD were not strong. Those who discontinued the CPET because of leg fatigue were in the earlier stages of COPD. Significant negative correlation between ∆VO 2 /∆WR and BODE-index suggests that along with COPD progression, regardless of negative past history, other comorbidities such as cardiac/musculoskeletal problems should be sought. Although more difficult to use than other tools such as COPD Assessment Test (CAT) or COPD Clinical Questionnaire (CCQ) during routine daily practice (6), the St. George's Respiratory Questionnaire (SGRQ) is one of the most widely used self-complete measures in research for assessing patients' symptoms, activities and quality of life (7,8). Along with this subjective measurement, functional capacity in COPD could be measured by objective tools such as cardio-pulmonary exercise testing (CPET) or 6-min walk distance (6MWD) (9-11). Considering the fact that at rest physiologic variable such as pulmonary diffusing capacity for carbon monoxide (DLCO), body mass index (BMI) or even forced expiratory volume in one second (FEV1) could not solely predict exercise intolerance, CPET has been proposed as the gold standard for evaluating the exercise intolerance in patients with pulmonary diseases, including COPD (12). But the precise head to head comparisons of CPET variable with patients' daily symptoms/activities and the disease social/ emotional impact are less well defined. In one study among 129 COPD subjects with GOLD stage II and III, there was at best a weak correlation between Peak-V'O 2 (maximum oxygen uptake) % predicted and some sub-domains of health status (13). While in another study Peak-V'O 2 was to some extent a predictor of physical function (r 2 increased by 0.109) and health-related ...

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Section: Discussionmentioning

confidence: 99%

Correlation of cardiopulmonary exercise testing parameters with quality of life in stable COPD patients

Mirdamadi¹,

Rahimi²,

Safavi³

et al. 2016

J. Thorac. Dis.

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“…Weight loss and, perhaps more importantly, the loss of lean body mass, are significant indicators of disease progression in COPD. Indeed, there is strong evidence that weight loss in people with COPD is associated with increased mortality [68,69].…”

Section: Improving Body Compositionmentioning

confidence: 99%

The importance of components of pulmonary rehabilitation, other than exercise training, in COPD

Hill¹,

Vogiatzis²,

Burtin³

2013

European Respiratory Review

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Comprehensive pulmonary rehabilitation is an important component in the clinical management of people with chronic obstructive pulmonary disease (COPD). Although supervised exercise training is considered the cornerstone of effective pulmonary rehabilitation, there are many other components that should be considered to manage the impairments and symptom burden, as well as the psychosocial and lifestyle changes imposed by COPD. These include approaches designed to: 1) facilitate smoking cessation; 2) optimise pharmacotherapy; 3) assist with early identification and treatment of acute exacerbations; 4) manage acute dyspnoea; 5) increase physical activity; 6) improve body composition; 7) promote mental health; 8) facilitate advance care planning; and 9) establish social support networks. This article will describe these approaches, which may be incorporated within pulmonary rehabilitation, to optimise effective chronic disease self-management. @ERSpublications This paper describes several components of comprehensive pulmonary rehabilitation, other than simply exercise training http://ow.ly/mMNRp Pulmonary rehabilitation for chronic obstructive pulmonary diseaseChronic obstructive pulmonary disease (COPD) is characterised by persistent airflow limitation due to chronic inflammation within the airways and lung in response to noxious particles or gases [1]. People with this condition are limited by dyspnoea and have impaired exercise capacity and health-related quality of life [1]. The prevalence of COPD amongst adults aged o40 years is ,10% [2], and increases to 21% in those with a significant smoking history who are visiting their family physician for any reason [3]. The natural course of COPD is punctuated with episodes of acute worsening, known as exacerbations, which contribute

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“…In addition, diaphragmatic muscle weakness, reduced lung function and loss of skeletal mass also lead to weight loss and reduction in BMI. [26] Further research is needed to elucidate the effect of different cytokines on body composition and vice versa. We observed that CRP positively correlated with MMRC dyspnoea scale (r=0.638, p<0.001) which is consistent with the study conducted by Rachel Garrod et al [27] ,who concluded that inflammation increased with MMRC grade and was significantly correlated with CRP(p=0.002).…”

Section: Discussionmentioning

confidence: 99%

Study of Prognostic Association of C-Reactive Protein (A Biomarker) with Clinically Important Predictors of Outcome in Stable and Unstable COPD Patients

2016

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Background: COPD is characterized by persistent airflow limitation that is progressive and is associated with enhanced chronic inflammatory response in the airways to noxious particles or gases. It has both systemic and pulmonary effects. Since COPD deaths estimated to increase by 30% in next 10 years, cost of treatment will be a heavy burden on global economy. The costs are proportional to pulmonary and extra pulmonary components of the disease. Methods: In this study, we examined 100 patients of COPD, out of which 80 were stable and 20 were unstable. Results: CRP levels were found to be increased in cases more than in controls (13.55+10.83 vs. 2.07+0.82 mg/lit, p<0.001), the levels being higher in unstable patients than in stable patients (33.78+7.74 vs. 8.50+1.81 mg/lit, p<0.001). We also submitted the patients to MMRC dyspnoea scale and found that CRP is positively correlated with MMRC dyspnoea scale (r=0.638, p<0.001) and was inversely correlated with 6-minute walk distance (r= -0.364, p<0.001). There was a significant positive correlation of CRP with BODE index (r=0.780, p<0.001). Conclusion: The study is valuable in detecting the severity of COPD cases both in stable and unstable conditions and to forecast the future morbidity and mortality outcome of such cases.

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Skeletal Muscle Dysfunction in Patients with Chronic Obstructive Pulmonary Disease

Cited by 78 publications

References 185 publications

Correlation of cardiopulmonary exercise testing parameters with quality of life in stable COPD patients

Correlation of cardiopulmonary exercise testing parameters with quality of life in stable COPD patients

The importance of components of pulmonary rehabilitation, other than exercise training, in COPD

Study of Prognostic Association of C-Reactive Protein (A Biomarker) with Clinically Important Predictors of Outcome in Stable and Unstable COPD Patients

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