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Amin R, Pandey R, Vaishali K, Acharya V, Sinha MK, Kumar N. Therapeutic Approaches for the Treatment of Interstitial Lung Disease: An Exploratory Review on Molecular Mechanisms. Mini Rev Med Chem 2024; 24:618-633. [PMID: 37587813 DOI: 10.2174/1389557523666230816090112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/04/2023] [Accepted: 06/09/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Interstitial Lung Diseases (ILDs) are characterized by shortness of breath caused by alveolar wall inflammation and/or fibrosis. OBJECTIVE Our review aims to study the depth of various variants of ILD, diagnostic procedures, pathophysiology, molecular dysfunction and regulation, subject and objective assessment techniques, pharmacological intervention, exercise training and various modes of delivery for rehabilitation. METHOD Articles are reviewed from PubMed and Scopus and search engines. RESULTS ILD is a rapidly progressing disease with a high mortality rate. Each variant has its own set of causal agents and expression patterns. Patients often find it challenging to self-manage due to persistent symptoms and a rapid rate of worsening. The present review elaborated on the pathophysiology, risk factors, molecular mechanisms, diagnostics, and therapeutic approaches for ILD will guide future requirements in the quest for innovative and tailored ILD therapies at the molecular and cellular levels. CONCLUSION The review highlights the rationale for conventional and novel therapeutic approaches for better management of ILD.
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Affiliation(s)
- Revati Amin
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Ruchi Pandey
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hajipur, Bihar, 844102, India
| | - K Vaishali
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Vishak Acharya
- Department of Pulmonary Medicine, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, India
| | - Mukesh Kumar Sinha
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Nitesh Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hajipur, Bihar, 844102, India
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Lee JYT, Tikellis G, Dowman L, Jones AW, Hoffman M, Mellerick CR, Malaguti C, Khor YH, Holland AE. Self-management interventions for people with pulmonary fibrosis: a scoping review. Eur Respir Rev 2023; 32:230092. [PMID: 37914193 PMCID: PMC10618910 DOI: 10.1183/16000617.0092-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/04/2023] [Indexed: 11/03/2023] Open
Abstract
BACKGROUND The most effective method for encouraging self-management in individuals with pulmonary fibrosis (PF) is unclear. This review aimed to identify common self-management components, the outcome measures used and the impact of these components in PF. METHODS A scoping review was conducted according to the Joanna Briggs Institute Manual for Evidence Synthesis using Medline, Embase, PsychInfo, CINAHL and the Cochrane Central Register of Controlled Trials. Eligible studies included those with educational, behavioural or support components aimed at facilitating self-management among adults with PF and employed quantitative and/or qualitative methods. RESULTS 87 studies were included. Common self-management components included education (78%), managing physical symptoms (66%) and enhancing psychosocial wellbeing (54%). Components were predominantly delivered in a pulmonary rehabilitation setting (71%). No studies tested a PF-specific self-management package. Common outcome measures were 6-min walk distance (60%), St George's Respiratory Questionnaire (37%) and the Medical Research Council Dyspnoea scale (34%). Clinically significant improvements in these outcomes were seen in ≥50% of randomised controlled trials. Qualitative data highlighted the importance of healthcare professional and peer support and increased confidence in managing PF. CONCLUSION Self-management components are commonly incorporated into pulmonary rehabilitation programmes rather than being offered as standalone packages. Future research should focus on testing PF-specific self-management packages and employ standardised outcome assessments that include self-efficacy and health-related behaviours.
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Affiliation(s)
- Joanna Y T Lee
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
| | - Gabriella Tikellis
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
| | - Leona Dowman
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Department of Respiratory and Sleep Medicine, Austin Health, Melbourne, Australia
| | - Arwel W Jones
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
| | - Mariana Hoffman
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Institute for Breathing and Sleep, Melbourne, Australia
| | - Christie R Mellerick
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Department of Physiotherapy, Alfred Health, Melbourne, Australia
| | - Carla Malaguti
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Yet H Khor
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Department of Respiratory and Sleep Medicine, Austin Health, Melbourne, Australia
- Institute for Breathing and Sleep, Melbourne, Australia
- Department of Respiratory and Sleep Medicine, Alfred Health, Melbourne, Australia
| | - Anne E Holland
- Respiratory Research@Alfred, Central Clinical School, Monash University, Melbourne, Australia
- Institute for Breathing and Sleep, Melbourne, Australia
- Department of Physiotherapy, Alfred Health, Melbourne, Australia
- Department of Respiratory and Sleep Medicine, Alfred Health, Melbourne, Australia
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Marillier M, Bernard AC, Verges S, Moran-Mendoza O, Neder JA. Quantifying leg muscle deoxygenation during incremental cycling in hypoxemic patients with fibrotic interstitial lung disease. Clin Physiol Funct Imaging 2022; 43:192-200. [PMID: 36582169 DOI: 10.1111/cpf.12809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/20/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Hypoxaemia and cardiocirculatory abnormalities may impair muscle oxygen (O2 ) delivery relative to O2 requirements thereby increasing the rate of O2 extraction during incremental exercise in fibrotic interstitial lung disease (f-ILD). Using changes in deoxyhaemoglobin concentration ([HHb]) by near-infrared spectroscopy (NIRS) as a proxy of O2 extraction, we investigated whether a simplified (double-linear) approach, previously tested in heart failure, would provide useful estimates of muscle deoxygenation in f-ILD. METHODS A total of 25 patients (23 men, 72 ± 8 years; 20 with idiopathic pulmonary fibrosis, lung diffusing capacity for carbon monoxide = 44 ± 11% predicted) and 12 age- and sex-matched healthy controls performed incremental cycling to symptom limitation. Changes in vastus lateralis [HHb] assessed by NIRS were analysed in relation to work rate (WR) and O2 uptake throughout the exercise. RESULTS Patients showed lower exercise capacity than controls (e.g., peak WR = 67 ± 18% vs. 105 ± 20% predicted, respectively; p < 0.001). The [HHb] response profile was typically S-shaped, presenting three distinct phases. Exacerbated muscle deoxygenation in patients versus controls was evidenced by: (i) a steeper mid-exercise [HHb]-WR slope (0.30 ± 0.22 vs. 0.11 ± 0.08 μmol/W; p = 0.008) (Phase 2), and (ii) a larger late-exercise increase in [HHb] (p = 0.002) (Phase 3). Steeper [HHb]-WR slope was associated with lower peak WR (r = -0.70) and greater leg discomfort (r = 0.77; p < 0.001) in f-ILD. CONCLUSION This practical approach to interpreting [HHb] during incremental exercise might prove useful to determine the severity of muscle deoxygenation and the potential effects of interventions thereof in hypoxemic patients with f-ILD.
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Affiliation(s)
- Mathieu Marillier
- Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, Ontario, Canada.,HP2 Laboratory, INSERM U1300, Grenoble Alpes University, Grenoble, France
| | - Anne-Catherine Bernard
- Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, Ontario, Canada.,HP2 Laboratory, INSERM U1300, Grenoble Alpes University, Grenoble, France
| | - Samuel Verges
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, Grenoble, France
| | - Onofre Moran-Mendoza
- Interstitial Lung Disease Program, Queen's University and Hotel Dieu Hospital, Kingston, Ontario, Canada
| | - J Alberto Neder
- Laboratory of Clinical Exercise Physiology, Queen's University and Kingston General Hospital, Kingston, Ontario, Canada
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Janowiak P, Szymanowska-Narloch A, Siemińska A. IPF Respiratory Symptoms Management - Current Evidence. Front Med (Lausanne) 2022; 9:917973. [PMID: 35966835 PMCID: PMC9368785 DOI: 10.3389/fmed.2022.917973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive, chronic disease of the lungs which is characterized by heavy symptom burden, especially in the last year of life. Despite recently established anti-fibrotic treatment IPF prognosis is one of the worst among interstitial lung diseases. In this review available evidence regarding pharmacological and non-pharmacological management of the main IPF symptoms, dyspnea and cough, is presented.
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Affiliation(s)
- Piotr Janowiak
- Department of Pulmonology, Medical University of Gdańsk, Gdańsk, Poland
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5
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Alyami RM, Alhowikan AM. Effect of supervised exercise training on exercise capacity, pulmonary function and growth differentiation factor 15 levels in patients with interstitial lung disease: A preliminary study. ISOKINET EXERC SCI 2021. [DOI: 10.3233/ies-210123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Interstitial lung disease is characterized by exertion dyspnea, exercise limitation and reduced quality of life. The role of exercise training in this diverse patient group is unclear. The growth differentiation factor 15 (GDF15) is a stress-sensitive circulating factor that regulates systemic energy balance and could be a possible biomarker in interstitial lung disease. OBJECTIVE: To evaluate the effect of supervised exercise (endurance and resistance) training (SET) on exercise capacity, pulmonary function parameters and GDF15 levels in patients with interstitial lung disease (PwILD). METHODS: In this non-randomized case-control trial, the experimental group comprised of 10 PwILD (7 women and 3 men) while the control group consisted of of 18 apparently healthy participants s 11 women and 7 men). All subjects completed an 8-week supervised exercise training program, at a rate of twice a week. Dyspnea was evaluated using the Shortness of Breath Respiratory Questionnaire. Exercise capacity was measured using the 6-min walk test while the heart rate (HR) was monitored before and after the exercise training. GDF15 levels were measured by Enzyme-Linked Immunosorbent Assay (ELISA). RESULTS: PwILD had significantly shorter 6-min walk distance than the control subjects at both the 1st and the 15th visit. However, both groups improved significantly in this test. The change (pre to post-exercise) in HR value was smaller in PwILD compared to the controls. Moreover, PwILD had higher Shortness of Breath Respiratory Questionnaire score than controls. While the mean pre-post GDF15 change values in both groups remained statistically unchanged the GDF15 values of the PwILD patients were significantly higher compared to the controls with respect to pre-post exercise training respectively. CONCLUSION: Supervised exercise training did not affect GDF15 levels in both patient and control groups but its values in PwILD were significantly higher compared to those of controls (p⩽0.05). The exercise capacity and dyspnea in these patients improved after exercise training program.
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Affiliation(s)
- Rahmah Mohammad Alyami
- College of Medicine, Department of Physiology, King Saud University, Riyadh, Saudi Arabia
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Wooten LC, Neville BT, Keyser RE. Measures of excess [Formula: see text]CO 2 and recovery [Formula: see text]CO 2 as indices of performance fatigability during exercise: a pilot study. Pilot Feasibility Stud 2021; 7:131. [PMID: 34162443 PMCID: PMC8220798 DOI: 10.1186/s40814-021-00840-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 04/16/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The severity of performance fatigability and the capacity to recover from activity are profoundly influenced by skeletal muscle energetics, specifically the ability to buffer fatigue-inducing ions produced from anaerobic metabolism. Mechanisms responsible for buffering these ions result in the production of excess carbon dioxide (CO2) that can be measured as expired CO2 ([Formula: see text]CO2) during cardiopulmonary exercise testing (CPET). The primary objective of this study was to assess the feasibility of select assessment procedures for use in planning and carrying out interventional studies, which are larger interventional studies investigating the relationships between CO2 expiration, measured during and after both CPET and submaximal exercise testing, and performance fatigability. METHODS Cross-sectional, pilot study design. Seven healthy subjects (30.7±5.1 years; 5 females) completed a peak CPET and constant work-rate test (CWRT) on separate days, each followed by a 10-min recovery then 10-min walk test. Oxygen consumption ([Formula: see text]O2) and [Formula: see text]CO2 on- and off-kinetics (transition constant and oxidative response index), excess-[Formula: see text]CO2, and performance fatigability severity scores (PFSS) were measured. Data were analyzed using regression analyses. RESULTS All subjects that met the inclusion/exclusion criteria and consented to participate in the study completed all exercise testing sessions with no adverse events. All testing procedures were carried out successfully and outcome measures were obtained, as intended, without adverse events. Excess-[Formula: see text]CO2 accounted for 61% of the variability in performance fatigability as measured by [Formula: see text]O2 on-kinetic ORI (ml/s) (R2=0.614; y = 8.474x - 4.379, 95% CI [0.748, 16.200]) and 62% of the variability as measured by PFSS (R2=0.619; y = - 0.096x + 1.267, 95% CI [-0.183, -0.009]). During CPET, [Formula: see text]CO2 -off ORI accounted for 70% (R2=0.695; y = 1.390x - 11.984, 95% CI [0.331, 2.449]) and [Formula: see text]CO2 -off Kt for 73% of the variability in performance fatigability measured by [Formula: see text]O2 on-kinetic ORI (ml/s) (R2=0.730; y = 1.818x - 13.639, 95% CI [0.548, 3.087]). CONCLUSION The findings of this study suggest that utilizing [Formula: see text]CO2 measures may be a viable and useful addition or alternative to [Formula: see text]O2 measures, warranting further study. While the current protocol appeared to be satisfactory, for obtaining select cardiopulmonary and performance fatigability measures as intended, modifications to the current protocol to consider in subsequent, larger studies may include use of an alternate mode or measure to enable control of work rate constancy during performance fatigability testing following initial CPET.
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Affiliation(s)
- Liana C. Wooten
- Department of Health, Human Function, and Rehabilitation Science, George Washington University, Washington, DC USA
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA USA
| | - Brian T. Neville
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA USA
| | - Randall E. Keyser
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA USA
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD USA
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Bajwah S, Colquitt J, Loveman E, Bausewein C, Almond H, Oluyase A, Dzingina M, Maddocks M, Higginson IJ, Wells A. Pharmacological and nonpharmacological interventions to improve symptom control, functional exercise capacity and quality of life in interstitial lung disease: an evidence synthesis. ERJ Open Res 2021; 7:00107-2020. [PMID: 33532482 PMCID: PMC7836673 DOI: 10.1183/23120541.00107-2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 09/13/2020] [Indexed: 11/09/2022] Open
Abstract
We assessed efficacy and effectiveness of pharmacological and nonpharmacological interventions in improving symptom control, functional exercise capacity and quality of life (QoL) in people living with fibrotic interstitial lung disease (ILD). We summarised evidence from three previous reviews (to June 2014) and conducted an updated search of nine databases and grey literature (2011-2019) (registration: CRD42017065933) for prospective studies of interventions aimed to alleviate symptoms, improve QoL or functional exercise capacity in fibrotic ILD. Data were synthesised through narrative synthesis or meta-analysed as appropriate. Forty-seven studies with 2527 participants were included. From 22 pharmacological studies of 11 different interventions (n=1683), the most tested interventions were bosentan and sildenafil. From 25 nonpharmacological studies, the most tested intervention was for pulmonary rehabilitation/exercise training (PR) (22 studies, n=748). There was an improvement in 6-min walk distance immediately following PR (six studies; n=200, mean difference (MD) (95% CI) 39.9 m (18.2 to 61.5)), but not longer term (3 or 6 months, four studies; n=147, MD 5.3 m (-12.9 to 23.4). Multiple, varied outcome measures were used (e.g. 37 studies assessing dyspnoea used 10 different scales with a lack of reporting of rate of deterioration in outcomes). Evidence gap mapping highlighted the most and least researched symptoms, as dyspnoea and cough, respectively. This evidence synthesis highlights overwhelmingly that the most researched symptom is dyspnoea and the strongest evidence base is for short-term PR. The least researched symptom was cough. Research going forward must focus on prioritising and standardising meaningful outcomes and focussing interventions on neglected symptoms.
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Affiliation(s)
- Sabrina Bajwah
- Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, London, UK,Sabrina Bajwah, Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, Bessemer Road, London SE5 9PJ, UK. E-mail:
| | | | | | | | | | - Adejoke Oluyase
- Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, London, UK
| | - Mendy Dzingina
- Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, London, UK
| | - Matthew Maddocks
- Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, London, UK
| | - Irene J. Higginson
- Cicely Saunders Institute, Dept of Palliative Care Policy and Rehabilitation, King's College London, London, UK
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Wooten LC, Neville BT, Guccione AA, Chin LM, Keyser RE. Carbon Dioxide Expiration and Performance Fatigability Following Aerobic Exercise Training: A Longitudinal, Observational, Pilot Study. Cardiopulm Phys Ther J 2021; 32:3-10. [PMID: 37614414 PMCID: PMC10445408 DOI: 10.1097/cpt.0000000000000162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Purpose This study examined the influence of aerobic exercise training (AET) on components of carbon dioxide expiration (VCO2), cardiorespiratory function, and fatigability. Methods Twenty healthy adults completed peak cardiopulmonary exercise (CPX) and submaximal tests before and after a vigorous, 4-week AET regimen. Each test was followed by a 10-min recovery and endurance test at 70% of peak wattage attained during CPX. Fatigability was assessed using testing durations and power output. Respiratory buffering (excess VCO2) and non-buffering (metabolic VCO2) were calculated. Data were analyzed for significance (p<0.05) using regressions and paired t-tests. Results Significant improvements in all measures of fatigability were observed after AET. A significant increase in excess VCO2 was observed, though not in metabolic VCO2. Excess VCO2 was strongly predictive of fatigability measures. Conclusion Significant decreases in fatigability are often observed in clinical populations such as obstructive or restrictive lung disease or pulmonary hypertension following AET, even when peak cardiorespiratory function does not appear to adapt. Decreases in fatigability appear to predict longevity with no yet identified mechanism. These results suggest that respiratory buffering and metabolic components of VCO2 may adapt independently to AET, introducing foundational plausibility for an influence of respiratory buffering adaptation to AET on fatigability status.
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Affiliation(s)
- Liana C. Wooten
- Department of Health, Human Function, and Rehabilitation Science, School of Medicine, George Washington University, Washington, D.C
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA
| | - Brian T. Neville
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA
| | - Andrew A. Guccione
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA
| | - Lisa M.K. Chin
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD
| | - Randall E. Keyser
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VA
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD
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Worth H, Bock R, Frisch M, Göhl O, Grünig E, Glöckl R, Limbach M, Schultz K, Spielmanns M, Taube K, Teschler S, Watz H. [Group Training of Patients with Chronic Lung Diseases under Outpatient Conditions - Recommendations of the Working Group Lung Sports in Germany and the German Airways League]. Pneumologie 2021; 75:44-56. [PMID: 33167049 DOI: 10.1055/a-1224-6024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
To improve acceptance and use of physical training by patients with chronic lung diseases, recommendations for performing lung exercises on an outpatient basis in a group setting are given by experts in physical training, sports therapists and pulmonologists. The evidence-based positive effects of physical training were analyzed for asthma , COPD, interstitial lung diseases, cystic fibrosis, lung carcinoma, and pulmonary hypertension. The requirements for lung exercises in outpatient groups as well as compensation by care providers were given on the basis of legal regulations. Furthermore, the main items of the training units as well as supervision by specially trained group leaders in relation to the severity of the underlying lung disease are described. Finally, aspects of safety of the participating patients are discussed, including the prevention of infection with corona-2-virus.
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Affiliation(s)
| | - R Bock
- Gemeinschaftspraxis Dres. Rüdiger Bock, Maria Develaska und Christiane Rozeh, Hamburg
| | | | | | - E Grünig
- Thoraxklinik Heidelberg gGmbH am Universitätsklinikum Heidelberg, Zentrum für pulmonale Hypertonie, Heidelberg
| | - R Glöckl
- Schön Klinik Berchtesgadener Land, Schönau am Königssee
| | - M Limbach
- Klinik Bad Reichenhall, Zentrum für Rehabilitation, Pneumologie und Orthopädie, Bad Reichenhall
| | - K Schultz
- Klinik Bad Reichenhall, Zentrum für Rehabilitation, Pneumologie und Orthopädie, Bad Reichenhall
| | - M Spielmanns
- Zürcher RehaZentren Klinik Wald, Wald, Schweiz.,Department für Gesundheit, Lehrstuhl für Pneumologie, Universität Witten-Herdecke, Witten
| | | | | | - H Watz
- Pneumologisches Forschungsinstitut an der LungenClinic Großhansdorf, Airway Research Center North (ARCN), Deutsches Zentrum für Lungenforschung (DZL), Großhansdorf
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Clinical Improvement and Effectiveness of Exercise-Based Pulmonary Rehabilitation in Patients With Idiopathic Pulmonary Fibrosis: A BRIEF ANALYTICAL REVIEW. J Cardiopulm Rehabil Prev 2020; 41:52-57. [PMID: 33186196 DOI: 10.1097/hcr.0000000000000544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive lung disease associated with high mortality rates and poor clinical condition. Exercise-based pulmonary rehabilitation (EBPR) has been demonstrated to be effective in improving 6-min walk distance (6MWD), although the clinical improvement and effectiveness are less characterized. The current review examined the existing evidence of EBPR among patients with IPF and aimed to analyze the effect of EBPR on clinical improvement and effectiveness. METHODS A systematic databases search (MEDLINE/PubMed, EMBASE, and the Cochrane Library) was conducted for available publications as of January 2020. Randomized controlled trials (RCTs) and meta-analyses of RCTs examining the effect of EBPR in patients with IPF were reviewed. Mean difference for RCTs and weighted mean difference for meta-analyses between the EBPR arm and the usual-care arm in 6MWD were compared with the established minimal clinically important difference (MCID) of 30 m. Clinical improvement following EBPR was determined when mean difference and weighted mean difference were equal or exceeding the MCID. Effectiveness of EBPR was assessed using the number needed to treat (NNT) analysis. RESULTS Five independent RCTs (including 21-61 patients/study) and five meta-analyses (including two to five studies with 62-169 patients/meta-analysis) were included. The mean difference of 6MWD ranged from 16-81 m in RCTs. Three of five RCTs demonstrated an average improvement that meets or exceeds the MCID. Two RCTs showed favorable improvement in 6MWD but did not reach the MCID. The weighted mean difference of 6MWD ranged from 27-49 m in the meta-analyses. Four of five meta-analyses showed an average improvement that meets or exceeds the MCID. One early meta-analysis of only two RCTs showed significant improvement, although did not reach the MCID. The NNT in three RCTs and four meta-analyses that met clinical improvement in 6MWD was one. CONCLUSIONS This review provides novel evidence with respect to clinical improvement and high effectiveness of EBPR among patients with IPF. The results suggest that, on average, the majority of patients would be expected to clinically improve by completing the EBPR program. The findings further support the prescription of EBPR as clinically effective therapy and implementation as standard of care for patients with IPF. Future studies examining clinical improvement and effectiveness utilizing additional outcomes with the MCID are warranted.
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Pechstein AE, Gollie JM, Guccione AA. Fatigability and Cardiorespiratory Impairments in Parkinson's Disease: Potential Non-Motor Barriers to Activity Performance. J Funct Morphol Kinesiol 2020; 5:E78. [PMID: 33467293 PMCID: PMC7739335 DOI: 10.3390/jfmk5040078] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 01/18/2023] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative condition after Alzheimer's disease, affecting an estimated 160 per 100,000 people 65 years of age or older. Fatigue is a debilitating non-motor symptom frequently reported in PD, often manifesting prior to disease diagnosis, persisting over time, and negatively affecting quality of life. Fatigability, on the other hand, is distinct from fatigue and describes the magnitude or rate of change over time in the performance of activity (i.e., performance fatigability) and sensations regulating the integrity of the performer (i.e., perceived fatigability). While fatigability has been relatively understudied in PD as compared to fatigue, it has been hypothesized that the presence of elevated levels of fatigability in PD results from the interactions of homeostatic, psychological, and central factors. Evidence from exercise studies supports the premise that greater disturbances in metabolic homeostasis may underly elevated levels of fatigability in people with PD when engaging in physical activity. Cardiorespiratory impairments constraining oxygen delivery and utilization may contribute to the metabolic alterations and excessive fatigability experienced in individuals with PD. Cardiorespiratory fitness is often reduced in people with PD, likely due to the combined effects of biological aging and impairments specific to the disease. Decreases in oxygen delivery (e.g., reduced cardiac output and impaired blood pressure responses) and oxygen utilization (e.g., reduced skeletal muscle oxidative capacity) compromise skeletal muscle respiration, forcing increased reliance on anaerobic metabolism. Thus, the assessment of fatigability in people with PD may provide valuable information regarding the functional status of people with PD not obtained with measures of fatigue. Moreover, interventions that target cardiorespiratory fitness may improve fatigability, movement performance, and health outcomes in this patient population.
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Affiliation(s)
- Andrew E. Pechstein
- Department of Rehabilitation Science, George Mason University, Fairfax, VA 22030, USA; (A.E.P.); (A.A.G.)
| | - Jared M. Gollie
- Department of Rehabilitation Science, George Mason University, Fairfax, VA 22030, USA; (A.E.P.); (A.A.G.)
- Research Services, Veterans Affairs Medical Center, Washington, DC 20422, USA
- Department of Health, Human Function, and Rehabilitation Sciences, The George Washington University, Washington, DC 20006, USA
| | - Andrew A. Guccione
- Department of Rehabilitation Science, George Mason University, Fairfax, VA 22030, USA; (A.E.P.); (A.A.G.)
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Wickerson L, Mathur S, Brooks D, Bonetti LV, Singer LG, Granton J, Reid WD. Skeletal muscle oxygenation and regional blood volume during incremental limb loading in interstitial lung disease. ERJ Open Res 2020; 6:00083-2019. [PMID: 32010722 PMCID: PMC6983499 DOI: 10.1183/23120541.00083-2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 11/20/2019] [Indexed: 11/29/2022] Open
Abstract
Introduction Individuals with interstitial lung disease (ILD) exhibit reduced exercise capacity and exertional hypoxaemia. The role of peripheral (muscle) limitation to exercise tolerance in ILD is not well studied to date. Methods A prospective cross-sectional study examined skeletal muscle oxygen saturation (SmO2) and regional blood volume of the knee extensors and elbow flexors during incremental limb loading in healthy people and people with varying severity of ILD. Isotonic concentric exercise was performed on an isokinetic dynamometer. SmO2 and regional blood volume were measured by near-infrared spectroscopy over the vastus lateralis and biceps. Results Thirteen people who were dependent on oxygen, candidates for lung transplant and with severe ILD (forced vital capacity (FVC) 59±20% predicted), 10 people who were not oxygen dependent with mild ILD (FVC 81±17% predicted) and 13 healthy people (FVC 101±14% predicted) were included. Total haemoglobin, a marker of regional blood volume, was lower at task failure in the knee extensors in participants with severe ILD compared to healthy participants (p=0.05). At task failure for both knee-extensor loading and elbow-flexor loading, SmO2 was decreased to similar levels across all groups, but occurred at lower total workloads in the ILD groups (all p<0.01). Conclusions Overall, people with severe ILD had lower levels of total work and experienced less increase in blood volume in the knee extensors after knee-extensor loading compared to healthy people. Peripheral muscle dysfunction in severe ILD may have contributed to muscle deoxygenation at lower workloads. Muscle deoxygenation occurs at a lower level of lower-limb incremental loading in lung transplant candidates with interstitial lung disease and regional blood volume is attenuated compared to healthy personshttp://bit.ly/34z0Qtw
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Affiliation(s)
- Lisa Wickerson
- Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada.,Dept of Physical Therapy, University of Toronto, Toronto, ON, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
| | - Sunita Mathur
- Dept of Physical Therapy, University of Toronto, Toronto, ON, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
| | - Dina Brooks
- Dept of Physical Therapy, University of Toronto, Toronto, ON, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
| | - L V Bonetti
- Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada.,Universidade de Rio Grande do Sul, Caxias do Sul, RS, Brazil
| | - Lianne G Singer
- Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada.,Dept of Medicine, University of Toronto, Toronto, ON, Canada
| | - John Granton
- Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada.,Dept of Medicine, University of Toronto, Toronto, ON, Canada
| | - W Darlene Reid
- Dept of Physical Therapy, University of Toronto, Toronto, ON, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
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Idiopathic Pulmonary Fibrosis and Lung Transplantation: When it is Feasible. ACTA ACUST UNITED AC 2019; 55:medicina55100702. [PMID: 31635104 PMCID: PMC6843894 DOI: 10.3390/medicina55100702] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/26/2019] [Accepted: 10/16/2019] [Indexed: 01/27/2023]
Abstract
Despite the availability of antifibrotic therapies, many patients with idiopathic pulmonary fibrosis (IPF) will progress to advanced disease and require lung transplantation. International guidelines for transplant referral and listing of patients with interstitial lung disease are not specific to those with IPF and were published before the widespread use of antifibrotic therapy. In this review, we discussed difficulties in decision-making when dealing with patients with IPF due to the wide variability in clinical course and life expectancy, as well as the acute deterioration associated with exacerbations. Indeed, the ideal timing for referral and listing for lung transplant remains challenging, and the acute deterioration might be influenced after transplant outcomes. Of note, patients with IPF are frequently affected by multimorbidity, thus a screening program for occurring conditions, such as coronary artery disease and pulmonary hypertension, before lung transplant listing is crucial to candidate selection, risk stratification, and optimal outcomes. Among several comorbidities, it is of extreme importance to highlight that the prevalence of lung cancer is increased amongst patients affected by IPF; therefore, candidates’ surveillance is critical to avoid organ allocation to unsuitable patients. For all these reasons, early referral and close longitudinal follow-up for potential lung transplant candidates are widely encouraged.
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Chéhère B, Bougault V, Chenivesse C, Grosbois JM, Wallaert B. Cardiorespiratory adaptation during 6-Minute Walk Test in fibrotic idiopathic interstitial pneumonia patients who did or did not respond to pulmonary rehabilitation. Eur J Phys Rehabil Med 2018; 55:103-112. [PMID: 29904044 DOI: 10.23736/s1973-9087.18.05093-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Pulmonary rehabilitation (PR) improves performance in the 6-min walk test (6MWT) in a subset of patients with fibrotic idiopathic interstitial pneumonia (f-IIP); however, a large proportion of patients does not respond to PR. AIM To investigate the effects of a PR program on cardiorespiratory responses during a 6MWT and to identify the characteristics of patients who do not show improved performance after PR. DESIGN An observational study. SETTING Patients were recruited from the Competence Centre for Rare Pulmonary Diseases at Lille University Hospital, France and completed an 8-week home-based PR program. POPULATION A total of 19 patients with f-IIP; 12 with idiopathic pulmonary fibrosis (IPF) and 7 with fibrotic non-specific interstitial pneumonia. METHODS Patients underwent spirometry and completed a 6MWT before and after an 8-week PR program. Gas exchange, heart rate, and pulse O2 saturation were measured continuously during the 6MWT. Quality of life, dyspnea, and anxiety/depression were assessed using the Short-Form 36 (SF-36), the baseline/transition dyspnea index (BDI/TDI), and the Hospital Anxiety and Depression Scale (HADS) questionnaires. RESULTS Patients who did and did not improve the distance walked in the 6MWT by at least 30 m after PR were classified as responders (N.=9) and non-responders (N.=10), respectively. O2 uptake, ventilation rate, and distance covered during the 6MWT were significantly improved only in the responder group (P<0.05). Changes in SF-36, BDI/TDI, and HADS scores did not differ significantly between responders and non-responders. The non-responder group contained significantly more patients with IPF (P<0.05) and experienced greater arterial oxygen desaturation during the 6MWT compared with the responder group. CONCLUSIONS Failure to improve performance in the 6MWT after PR was associated with a diagnosis of IPF, non-improvement in gas exchange, and greater arterial oxygen desaturation. CLINICAL REHABILITATION IMPACT Most f-IIP patients who did not respond to PR were diagnosed with IPF and displayed greater hypoxemia during exercise. Clinical practitioners should seek to determine why patients fail to improve exercise performance after PR and propose an alternative exercise regimen to these patients.
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Affiliation(s)
- Baptiste Chéhère
- EA 7369 - URePSSS - Multidisciplinary Research Unit in Sport Health Society, University of Lille, Lille, France
| | - Valérie Bougault
- EA 7369 - URePSSS - Multidisciplinary Research Unit in Sport Health Society, University of Lille, Lille, France -
| | - Cécile Chenivesse
- Competence Center for Rare Pulmonary Diseases, Department of Immuno-Allergology and Respiratory Diseases, Lille University Hospital, University of Lille, Lille, France
| | - Jean-Marie Grosbois
- Department of Respiratory Medicine, Germon and Gauthier Hospital, Béthune, France.,FormAction Santé, Pérenchies, France
| | - Benoit Wallaert
- Competence Center for Rare Pulmonary Diseases, Department of Immuno-Allergology and Respiratory Diseases, Lille University Hospital, University of Lille, Lille, France.,Department of Respiratory Medicine, Germon and Gauthier Hospital, Béthune, France
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16
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Preliminary study of the anabolic/catabolic balance in patients with interstitial pulmonary fibrosis. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2017. [DOI: 10.1016/j.ejcdt.2016.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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17
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Abstract
Key points Educational aims Exercise is a well-documented safe and effective intervention for prevention and rehabilitation of chronic diseases. Idiopathic pulmonary fibrosis (IPF) is a chronic deadly lung disease associated with severe signs and symptoms, exercise intolerance, diminished quality of life and poor prognosis. In the short term, supervised exercise training programmes have demonstrated clinical benefits in improving exercise capacity, dyspnoea and quality of life in patients with IPF. The underlying mechanisms of chronic adaption to a regular exercise regimen in IPF have yet to be well described and require further investigation. The available data underscore the importance of implementing training principles to target the pathophysiological impairments of IPF in order to optimise training adaption and enhance the outcomes. The current exercise training data in IPF provide sufficient evidence of clinical benefit for consideration to be given to recommending exercise-based pulmonary rehabilitation as standard of care for IPF. An overview of data on exercise for IPF patients, highlighting the importance of exercise training in IPF managementhttp://ow.ly/4mWCCd
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Affiliation(s)
- Baruch Vainshelboim
- Pulmonary Institute, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel; Cardiology Division, Veterans Affairs Palo Alto Health Care System/Stanford University, Palo Alto, CA, USA
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18
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Cardiovascular and Pulmonary Research: The Year (2015) in Review. Cardiopulm Phys Ther J 2016. [DOI: 10.1097/cpt.0000000000000040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Brown AW, Kaya H, Nathan SD. Lung transplantation in IIP: A review. Respirology 2015; 21:1173-84. [PMID: 26635297 DOI: 10.1111/resp.12691] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 08/10/2015] [Accepted: 10/24/2015] [Indexed: 12/15/2022]
Abstract
The idiopathic interstitial pneumonias (IIP) encompass a large and diverse subtype of interstitial lung disease (ILD) with idiopathic pulmonary fibrosis (IPF) and non-specific interstitial pneumonia (NSIP) being the most common types. Although pharmacologic treatments are available for most types of IIP, many patients progress to advanced lung disease and require lung transplantation. Close monitoring with serial functional and radiographic tests for disease progression coupled with early referral for lung transplantation are of great importance in the management of patients with IIP. Both single and bilateral lung transplantation are acceptable procedures for IIP. Procedure selection is a complex decision influenced by multiple factors related to patient, donor and transplant centre. While single lung transplant may reduce waitlist time and mortality, the long-term outcomes after bilateral lung transplantation may be slightly superior. There are numerous complications following lung transplantation including primary graft dysfunction, chronic lung allograft dysfunction (CLAD), infections, gastroesophageal reflux disease (GERD) and airway disease that limit post-transplant longevity. The median survival after lung transplantation is 4.7 years in patients with ILD, which is less than in patients with other underlying lung diseases. Although long-term survival is limited, this intervention still conveys a survival benefit and improved quality of life in suitable IIP patients with advanced lung disease and chronic hypoxemic respiratory failure.
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Affiliation(s)
- A Whitney Brown
- Advanced Lung Disease and Transplant Program, Department of Medicine, Inova Fairfax Hospital, Falls Church, Virginia, USA
| | - Hatice Kaya
- Pulmonary Critical Care and Sleep Division, George Washington University, Washington, District of Columbia, USA
| | - Steven D Nathan
- Advanced Lung Disease and Transplant Program, Department of Medicine, Inova Fairfax Hospital, Falls Church, Virginia, USA.
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20
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Guidelines for the Evaluation and Treatment of Muscle Dysfunction in Patients With Chronic Obstructive Pulmonary Disease. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.arbr.2015.04.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Barreiro E, Bustamante V, Cejudo P, Gáldiz JB, Gea J, de Lucas P, Martínez-Llorens J, Ortega F, Puente-Maestu L, Roca J, Rodríguez-González Moro JM. Guidelines for the evaluation and treatment of muscle dysfunction in patients with chronic obstructive pulmonary disease. Arch Bronconeumol 2015; 51:384-95. [PMID: 26072153 DOI: 10.1016/j.arbres.2015.04.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 03/24/2015] [Accepted: 04/23/2015] [Indexed: 01/09/2023]
Abstract
In patients with chronic obstructive pulmonary disease (COPD), skeletal muscle dysfunction is a major comorbidity that negatively impacts their exercise capacity and quality of life. In the current guidelines, the most recent literature on the various aspects of COPD muscle dysfunction has been included. The Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) scale has been used to make evidence-based recommendations on the different features. Compared to a control population, one third of COPD patients exhibited a 25% decline in quadriceps muscle strength, even at early stages of their disease. Although both respiratory and limb muscles are altered, the latter are usually more severely affected. Numerous factors and biological mechanisms are involved in the etiology of COPD muscle dysfunction. Several tests are proposed in order to diagnose and evaluate the degree of muscle dysfunction of both respiratory and limb muscles (peripheral), as well as to identify the patients' exercise capacity (six-minute walking test and cycloergometry). Currently available therapeutic strategies including the different training modalities and pharmacological and nutritional support are also described.
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Affiliation(s)
- Esther Barreiro
- Servei de Pneumologia, Unitat de Recerca en Múscul i Aparell Respiratori (URMAR), IMIM-Hospital del Mar, CEXS, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, España; CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España.
| | - Víctor Bustamante
- Hospital Universitario Basurto, Osakidetza, Departamento de Medicina, Universidad del País Vasco, Bilbao, España; Servicio de Neumología y Unidad de Investigación, Hospital de Cruces, Universidad del País Vasco , Barakaldo, España
| | - Pilar Cejudo
- Servicio de Neumología y Unidad de Investigación, Hospital de Cruces, Universidad del País Vasco , Barakaldo, España
| | - Juan B Gáldiz
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Hospital Universitario Basurto, Osakidetza, Departamento de Medicina, Universidad del País Vasco, Bilbao, España
| | - Joaquim Gea
- Servei de Pneumologia, Unitat de Recerca en Múscul i Aparell Respiratori (URMAR), IMIM-Hospital del Mar, CEXS, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, España; CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
| | - Pilar de Lucas
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - Juana Martínez-Llorens
- Servei de Pneumologia, Unitat de Recerca en Múscul i Aparell Respiratori (URMAR), IMIM-Hospital del Mar, CEXS, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, España; CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
| | - Francisco Ortega
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Servicio de Neumología y Unidad de Investigación, Hospital de Cruces, Universidad del País Vasco , Barakaldo, España
| | - Luis Puente-Maestu
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - Josep Roca
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Servicio de Neumología, Hospital General Gregorio Marañón, Universidad Complutense de Madrid, Madrid, España; Servei de Pneumologia, Hospital Clínic de Barcelona, Barcelona, España
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22
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Keyser RE, Christensen EJ, Chin LMK, Woolstenhulme JG, Drinkard B, Quinn A, Connors G, Weir NA, Nathan SD, Chan LE. Changes in fatigability following intense aerobic exercise training in patients with interstitial lung disease. Respir Med 2015; 109:517-25. [PMID: 25698651 PMCID: PMC6388636 DOI: 10.1016/j.rmed.2015.01.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 01/26/2015] [Accepted: 01/29/2015] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To determine if, in patients with interstitial lung disease (ILD), fatigue might be lessened after vigorous aerobic exercise. METHODS 13 physically inactive patients (5 men and 8 women; age 57.2 ± 9.1 years, BMI 28.2 ± 4.6 kgm(-2)) with ILD of heterogeneous etiology and able to walk on a motor driven treadmill without physical limitation were enrolled. Subjects underwent cardiopulmonary exercise (CPET) and 6-min walk (6MWT) tests and completed Fatigue Severity Scale and Human Activity Profile questionnaires before and after an aerobic exercise-training regimen. The training regimen required participation in at least 24 of 30 prescribed aerobic exercise training sessions at a target heart rate of 70-80% of the heart rate reserve, 30 min per session, 3 times per week for 10 weeks. RESULTS After training, a 55% (p < 0.001) increase in time to anaerobic threshold on the CPET, and an 11% (p = 0.045) reduction in performance fatigability index (PFI), calculated from the performance on the 6MWT were observed. Distance walked on the 6MWT (6MWD) increased by 49.7 ± 46.9 m (p = 0.002). Significant improvements in scores on the Fatigue Severity Scale (p = 0.046) and Human Activity Profile (AAS p = 0.024; MAS p = 0.029) were also observed. No adverse events related to the training regimen were noted. CONCLUSION After training, the decrease in fatigability appeared to result in increased 6MWD and was associated with physical activity. Since significant declines in 6MWD may be a marker for impending mortality in ILD, a better understanding of the etiological state of fatigue in patients with ILD and its reversal might provide fundamental insight into disease progression and even survival. [ClinicalTrials.gov identifier NCT00678821].
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Affiliation(s)
- Randall E Keyser
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA; Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA.
| | - Eric J Christensen
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
| | - Lisa M K Chin
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA; Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
| | - Joshua G Woolstenhulme
- Department of Rehabilitation Science, College of Health and Human Services, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA; Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
| | - Bart Drinkard
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
| | - Anne Quinn
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
| | - Gerilynn Connors
- Pulmonary Rehabilitation Center, Inova Farifax Hospital, Falls Church, VA 22046, USA
| | - Nargues A Weir
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, 3300 Gallows Road, Falls Church, VA 22046, USA
| | - Steven D Nathan
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, 3300 Gallows Road, Falls Church, VA 22046, USA
| | - Leighton E Chan
- Rehabilitation Medicine Department, National Institutes of Health Clinical Center, 10 Center Drive, Bethesda, MD 20892, USA
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