Physical activity and inactivity among different body composition phenotypes in individuals with moderate to very severe chronic obstructive pulmonary disease

Impaired Skeletal Muscle in Patients with Stable Chronic Obstructive Pulmonary Disease (COPD) Compared with Non-COPD Patients

Purpose

This study was designed to investigate the differences in skeletal-muscle atrophy between patients with stable chronic obstructive pulmonary disease (COPD) and healthy controls; associated factors were also considered. The study comprised selected residents of communities near the First Affiliated Hospital of Soochow University in Suzhou City, East China.

Patients and Methods

Included in this study were 123 COPD patients and 60 controls. All patients completed spirometry as well as examinations to determine their functional exercise capacity, body composition, and handgrip strength (HGS).

Results

COPD patients had less fat-free mass (FFM), a lower FFM index (FFMI), and a lower 6-min walking distance (6MWD) compared with controls (P = 0.007, P = 0.020, and P < 0.001, respectively) (FFMI: 17.59 ± 1.83 vs 18.34 ± 1.64). The HGS of these patients was also lower compared with that of controls (32.88 ± 7.84 vs 35.48 ± 7.42), and HGS tended toward statistical significance (P = 0.064, respectively). In multivariate analysis, age (β = -0.107, P < 0.001), gender (β = 0.212, P < 0.001), body mass index (BMI) (β = 0.462, P < 0.001), FEV1% (β = 0.108, P = 0.009), and calf circumference (CC) (β = 0.457, P < 0.001) were significantly associated with FFMI.

Conclusion

Impaired skeletal muscle mass was more common in COPD patients than in controls. Multiple regression analysis showed that CC may be used to detect the degree of impairment, particularly by health-care providers working outside of the hospital.

Prevalence of sarcopenia in patients with COPD through different musculature measurements: An updated meta-analysis and meta-regression

Aim

Chronic obstructive pulmonary disease (COPD) patients vary widely in terms of the prevalence of sarcopenia, which is partially attributed to differences in diagnostic criteria and disease severity. There are several different musculature measurements that are used to quantify sarcopenia. This study included published literature for meta-analysis to assess the sarcopenia prevalence in COPD patients and correlate the disease with the clinical characteristics of such patients.

Methods

A comprehensive review of the English and Chinese literature on sarcopenia prevalence in COPD patients was conducted using electronic databases such as China National Knowledge Infrastructure (CNKI), Web of Science, Cochrane Library, EMBASE, PubMed, and Wanfang. Two researchers analyzed the studies for Newcastle-Ottawa Scale. The software Stata 11.0 was employed for the analysis of the acquired data. The standard mean differences method was utilized for the estimation and quantification of the effect size. Furthermore, a fixed- or random-effects model was employed for conducting a combined analysis.

Results

In total, 56 studies were included as per the specific inclusion criteria. The resulting data of the assessed COPD patients in this research indicated a 27% prevalence of sarcopenia. Further analysis of subgroups was executed per disease severity, ethnicity, diagnostic criteria, gender, and age. Per these findings, increased disease severity elevated the prevalence of sarcopenia. The Latin American and Caucasian populations indicated an increased prevalence of sarcopenia. In addition, the prevalence of sarcopenia was related to diagnostic criteria and definition. Male COPD patients had a higher prevalence of sarcopenia than female COPD patients. COPD patients with an average age greater than 65 had a slightly higher prevalence of sarcopenia. COPD patients with comorbid sarcopenia had poorer pulmonary function, activity tolerance, and clinical symptoms than patients with COPD alone.

Conclusion

Sarcopenia prevalence is high (27%) in COPD patients. In addition, these patients had worse pulmonary function and activity tolerance compared to patients without sarcopenia.

Systematic review registration

https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=367422, identifier CRD42022367422.

The Association between Fat-Free Mass and Exercise Test Outcomes in People with Chronic Obstructive Pulmonary Disease: A Systematic Review

People with chronic obstructive pulmonary disease (COPD) tend to have abnormally low levels of fat-free mass (FFM), which includes skeletal muscle mass as a central component. The purpose of this systematic review was to synthesise available evidence on the association between FFM and exercise test outcomes in COPD. MEDLINE, Cochrane Library, EMBASE, Web of Science, and Scopus were searched. Studies that evaluated exercise-related outcomes in relation to measures of FFM in COPD were included. Eighty-three studies, containing 18,770 (39% female) COPD participants, were included. Considerable heterogeneity was identified in the ways that FFM and exercise test outcomes were assessed; however, higher levels of FFM were generally associated with greater peak exercise capacity. This association was stronger for some exercise test outcomes (e.g. peak rate of oxygen consumption during incremental cycle exercise testing) than others (e.g. six-minute walking distance). This review identified heterogeneity in the methods used for measuring FFM and exercise capacity. There was, in general, a positive association between FFM and exercise capacity in COPD. There was also an identified lack of studies investigating associations between FFM and temporal physiological and perceptual responses to exercise. This review highlights the significance of FFM as a determinant of exercise capacity in COPD.

Changes in systemic inflammation after pulmonary rehabilitation in patients with COPD and severe physical inactivity - an exploratory study

Background: Severe physical inactivity (SPI) in patients with COPD is associated with a poor prognosis. It is unknown whether there is a link between SPI and systemic inflammation, and if systemic inflammation in SPI changes following pulmonary rehabilitation (PR).

Methods: A prospective, observational study of patients referred for at least 7 weeks of PR comprising 2 h of exercise therapy and education twice weekly. At baseline and after PR, daily physical activity level (PAL) was measured with a validated activity monitor, SenseWear^® as well as systemic inflammation: b-eosinophils, p-fibrinogen, p-CRP, s-IL-6 and s-CD 163. SPI was defined as PAL <1.4.

Results: At baseline, SPI was present in 31 of the 57 patients included, and 23% (7/31) improved to non-SPI after PR. We observed no differences between patients with SPI and non-SPI, except baseline plasma fibrinogen level was slightly yet significantly higher in patients with SPI (median 13.3 [6.2–23.6] vs 11.2 [6.5–16.7] µmol/l) but change in fibrinogen levels differed insignificantly between patients who improved to non-SPI at follow-up compared to patients with persistent SPI (−0.6 [−16.9–9.9] vs −0.4 [−11.2–1.2] µmol/l).

Conclusion: SPI in COPD appears not to be associated with a distinct inflammatory profile compared to less sedentary COPD patients attending pulmonary rehabilitation. Currently biomarkers have no role in the detection of SPI in COPD.

Effectiveness of neuromuscular electrostimulation in COPD subjects on mechanical ventilation. A systematic review and meta-analysis

OBJECTIVE

To estimate the effectiveness of Neuromuscular Electrostimulation (NMES) in adults with COPD undergoing MV.

METHOD

A sensitive search was performed in MEDLINE, Embase, CENTRAL, CINAHL and other resources. Randomized Controlled Clinical Trials (RCTs) or non-RCTs that enrolled adults with COPD on MV due to an exacerbation of their disease were included. Two independent reviewers screened, extracted information, and assessed the risk of bias (RoB 2 tool) and the certainty of evidence (GRADE approach) from the included studies.

RESULTS

Four RCTs (144 participants) were included. Subjects who underwent NMES were able to move from bed to chair independently in less time (MD = 4.98 days less; 95% CI -8.55 to -1.47; 2 RCTs; low certainty of the evidence) and they were fewer days on MV (MD = 2.89 days less; 95% CI -4.58 to -1.21); 3 RCTs; low certainty of the evidence) than the control group. However, the effect of NMES on muscle strength is unclear (very low certainty of the evidence).

CONCLUSIONS

NMES may improve functional independence and decrease MV time in adults with COPD; however, its effectiveness on muscle strength is uncertain. More and better RCTs are needed to determine with greater certainty the effectiveness of NMES in this population.

Use of the activities and participation profile to assess the functioning of physically inactive elderly

Abstract Introduction: Physical inactivity negatively impacts the functional status of the elderly during aging. Objective: To describe the activity and participation profile of physically inactive elderly and to investigate associated factors. Methods: A cross-sectional study with physically inactive elderly, aged ≥ 60 years, both sexes, with good cognitive function and independent gait. Personal factors, clinical history, history of falls in the last year, and identification of activity and participation profiles were investigated. Nonparametric statistical tests (SPSS 20.0) were performed, considering p < 0.05 significant. Results: The elderly (n = 36) had a mean age of 72.5 years (±7.7). Most were women (78%), with one to four years of education (69%), retired (72%), referring episodes of falling (58%) and affected by two to four comorbidities (53%). In the activities and participation profile, most of the physically inactive elderly presented mild problems for: crawling, kneeling, squatting, walking long distances, walking on different surfaces, walking around obstacles, climbing, and using public transportation. However, kneeling, squatting, walking on different surfaces, and climbing represented higher percentages of elderly who presented some problem. The advancement of age (p = 0.045), female sex (p = 0.022), episodes of falls (p = 0.037), and comorbidities (p = 0.031) were identified as factors that can impact functioning. Conclusion: The physically inactive elderly presented a mild problem in activities and participation items that are more related to strength and walking. Elderly aged over 70, female, with episodes of falls and comorbidities were significantly associated with reduced or impaired functioning.

Uso do perfil de atividades e participação para avaliação da funcionalidade de idosos inativos fisicamente

Resumo Introdução: A inatividade física impacta negativamente a funcionalidade dos idosos durante o envelhecimento. Objetivo: Descrever o perfil de atividade e participação de idosos inativos fisicamente e investigar fatores associados. Métodos: Estudo transversal com idosos inativos fisicamente, ≥ 60 anos, ambos os sexos, boa função cognitiva e independentes na marcha. Foram investigados fatores pessoais, história clínica, histórico de quedas no último ano e identificação do perfil de atividade e participação. Foram realizados testes estatísticos não paramétricos (SPSS 20.0), considerando p < 0,05. Resultados: Os idosos (n = 36) apresentaram média de 72,5 anos (± 7,7). A maioria era mulher (78%), com escolaridade de um a quatro anos de estudo (69%), aposentados (72%), referindo episódios de queda (58%) e acometidos por duas a quatro comorbidades (53%). No perfil de atividades e participação, a maioria dos idosos inativos fisicamente apresentaram problema leve para os itens: engatinhar, ajoelhar-se, agachar-se, andar longas distâncias, andar sobre superfícies diferentes, andar desviando-se de obstáculos, subir e utilizar transporte público. Entretanto, ajoelhar-se, agachar-se, andar sobre superfícies diferentes e subir compreendem maiores percentuais de idosos que apresentaram algum problema. Idade avançada (p = 0,045), sexo feminino (p = 0,022), episódios de quedas (p = 0,037) e presença de comorbidades (p = 0,031) foram identificados como fatores que podem impactar na funcionalidade. Conclusão: Idosos inativos fisicamente apresentaram problema leve nos itens das atividades e participação que estão mais relacionados à força e ao andar. Idosos com mais de 70 anos, do sexo feminino, com presença de episódios de quedas e de comorbidades, apresentaram associação significativa com a funcionalidade reduzida ou prejudicada.