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Chavoshian S, Cao X, Thommandram A, Stanbrook MB, Tarlo SM, Fossat Y, Yadollahi A. Designing and validating an experimental protocol to induce airway narrowing in older adults with and without asthma. Biomed Eng Online 2024; 23:28. [PMID: 38448963 PMCID: PMC10916193 DOI: 10.1186/s12938-023-01197-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/20/2023] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Persons with asthma may experience excessive airway narrowing due to exercise or exposure to cold air, worsening their daily functionality. Exercise has several benefits for asthma control, but it may induce airway narrowing in some persons with asthma. When combined with cold temperatures, it introduces another layer of challenges. Therefore, managing this interaction is crucial to increase the quality of life in individuals with asthma. The purpose of this study was to develop a reliable experimental protocol to assess the effects of exercise and cold air on airway narrowing in adults with asthma in a controlled and safe environment. METHODS This study was a randomized cross-over study in adults with and without asthma. Participants underwent a protocol involving a 10-min seated rest, followed by a 10-min cycling on a stationary bike in different temperatures of 0, 10, or 20 ∘ C. The sequence of room temperatures was randomized, and there was a 30-min interval for recovery between each temperature transition. In each temperature, to measure lung function and respiratory symptoms, oscillometry and a questionnaire were used at 0 min (baseline), after 10 min of sitting and before starting biking (pre-exercise), and after 10 min of biking (post-exercise). At each room temperature, the changes in airway mechanics and asthma symptoms among baseline, pre-exercise, and post-exercise were compared with one-way repeated measures ANOVA or Friedman Rank Test. Within each arm, cardiac and thoraco-abdominal motion respiration signals were also measured continuously using electrodes and calibrated respiratory inductance plethysmographs, respectively. RESULTS A total of 23 persons with asthma (11 females, age: 56.3 ± 10.9 years, BMI: 27.4 ± 5.7 kg/m2) and 6 healthy subjects (3 females, age: 61.8 ± 9.1 years, BMI: 28.5 ± 3.1 kg/m2) were enrolled in the study. Cold temperature of 0∘ C induced airway narrowing in those with and without asthma after 10 and 20 min, respectively. Exercise intervention had significant changes in airway narrowing in participants with asthma in the range of 10-20∘ C. Our results showed that in asthma, changes in subjective respiratory symptoms were due to both cold temperatures of 0 and 10∘ C and exercise in the 0-20∘ C range. Respiratory symptoms were not noticed among the healthy participants. CONCLUSION In conclusion, our findings suggest that exposure to cold temperatures of 0∘ C could serve as a reliable method in the experimental protocol for inducing airway narrowing in asthma. The impact of exercise on airway narrowing was more variable among participants. Understanding these triggers in the experimental protocol is essential for the successful management of asthma in future studies.
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Affiliation(s)
- Shaghayegh Chavoshian
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, 550 University Ave, Toronto, M5G 2A2, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College St., Toronto, M5S 3G9, ON, Canada
| | - Xiaoshu Cao
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, 550 University Ave, Toronto, M5G 2A2, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College St., Toronto, M5S 3G9, ON, Canada
| | - Anirudh Thommandram
- Labs Department, Klick Health, Klick Inc, 175 Bloor St. East, Toronto, M4W 3R8, ON, Canada
| | - Matthew B Stanbrook
- Department of Medicine, University of Toronto, 164 College St., Toronto, M5S 3G9, ON, Canada
- Department of Medicine, University Health Network Toronto Western Hospital, 399 Bathurst St., Toronto, M5T 2S8, ON, Canada
| | - Susan M Tarlo
- Department of Medicine, University of Toronto, 164 College St., Toronto, M5S 3G9, ON, Canada
- Department of Medicine, University Health Network Toronto Western Hospital, 399 Bathurst St., Toronto, M5T 2S8, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, M5T 1P8, ON, Canada
| | - Yan Fossat
- Labs Department, Klick Health, Klick Inc, 175 Bloor St. East, Toronto, M4W 3R8, ON, Canada
| | - Azadeh Yadollahi
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, 550 University Ave, Toronto, M5G 2A2, ON, Canada.
- Institute of Biomedical Engineering, University of Toronto, 164 College St., Toronto, M5S 3G9, ON, Canada.
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Huzmeli I, Ozer AY, Akkus O, Yalcin F. The results of inspiratory muscle training on cardiac, respiratory, musculoskeletal, and psychological status in patients with stable angina: a randomized controlled trial. Disabil Rehabil 2023; 45:4074-4085. [PMID: 36382684 DOI: 10.1080/09638288.2022.2146767] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 11/05/2022] [Indexed: 11/17/2022]
Abstract
PURPOSE To determine the effect of inspiratory muscle training (IMT) on respiratory and peripheral muscle strength, functional exercise capacity, health-related quality of life (HRQoL), fatigue, depression, and cardiac functions in patients with stable angina. METHODS A randomized, controlled, single-blinded study. Twenty patients (59.95 ± 7.35 y, LVEF = 58.77 ± 7.49) with stable angina received IMT at the lowest load (10 cmH2O), and 20 patients (55.85 ± 7.60 y, LVEF = 62.26 ± 7.75) received training at 30% of maximal inspiratory pressure (MIP) seven days/8 weeks. Respiratory muscle strength (MIP; maximal expiratory pressure, MEP), peripheral muscle strength, pulmonary functions, functional exercise capacity (6-min walking test; exercise test), fatigue, HRQoL, depression, and cardiac functions were evaluated before and after. RESULTS A statistical difference was found between groups in terms of respiratory and peripheral muscle strength, pulmonary functions, functional exercise capacity (p < 0.05). The results of fatigue, depression, HRQoL, and cardiac functions were similar between the groups (p > 0.05). CONCLUSIONS This study is the first to demonstrate the positive effects of IMT in patients with stable angina. IMT is a safe and effective method and is recommended to be added to cardiopulmonary rehabilitation programs and guidelines, as it results in increased peripheral muscle strength and functional exercise capacity in stable angina patients.Implications for rehabilitationInspiratory muscle training (IMT) is a safe and effective method for coronary artery disease (CAD) patients with stable angina.IMT improved respiratory and peripheral muscle strength, functional exercise capacity, pulmonary functions, and health-related quality of life in CAD patients with stable angina.Perception of depression and fatigue were decreased with IMT in CAD patients with stable angina.
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Affiliation(s)
- I Huzmeli
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Hatay Mustafa Kemal University, Hatay, Turkey
| | - A Y Ozer
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Marmara University, Istanbul, Turkey
| | - O Akkus
- Department of Cardiology, Tayfur Ata Sokmen Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Turkey
| | - F Yalcin
- Department of Cardiology, Tayfur Ata Sokmen Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Turkey
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Palmer T, Obst SJ, Aitken CR, Walsh J, Sabapathy S, Adams L, Morris NR. Fixed-intensity exercise tests to measure exertional dyspnoea in chronic heart and lung populations: a systematic review. Eur Respir Rev 2023; 32:230016. [PMID: 37558262 PMCID: PMC10410401 DOI: 10.1183/16000617.0016-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 05/31/2023] [Indexed: 08/11/2023] Open
Abstract
INTRODUCTION Exertional dyspnoea is the primary diagnostic symptom for chronic cardiopulmonary disease populations. Whilst a number of exercise tests are used, there remains no gold standard clinical measure of exertional dyspnoea. The aim of this review was to comprehensively describe and evaluate all types of fixed-intensity exercise tests used to assess exertional dyspnoea in chronic cardiopulmonary populations and, where possible, report the reliability and responsiveness of the tests. METHODS A systematic search of five electronic databases identified papers that examined 1) fixed-intensity exercise tests and measured exertional dyspnoea, 2) chronic cardiopulmonary populations, 3) exertional dyspnoea reported at isotime or upon completion of fixed-duration exercise tests, and 4) published in English. RESULTS Searches identified 8785 papers. 123 papers were included, covering exercise tests using a variety of fixed-intensity protocols. Three modes were identified, as follows: 1) cycling (n=87), 2) walking (n=31) and 3) other (step test (n=8) and arm exercise (n=2)). Most studies (98%) were performed on chronic respiratory disease patients. Nearly all studies (88%) used an incremental exercise test. 34% of studies used a fixed duration for the exercise test, with the remaining 66% using an exhaustion protocol recording exertional dyspnoea at isotime. Exertional dyspnoea was measured using the Borg scale (89%). 7% of studies reported reliability. Most studies (72%) examined the change in exertional dyspnoea in response to different interventions. CONCLUSION Considerable methodological variety of fixed-intensity exercise tests exists to assess exertional dyspnoea and most test protocols require incremental exercise tests. There does not appear to be a simple, universal test for measuring exertional dyspnoea in the clinical setting.
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Affiliation(s)
- Tanya Palmer
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Central Queensland University, School of Health, Medical and Applied Sciences, College of Health Sciences, Bundaberg, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Queensland Health, Chermside, Australia
| | - Steven J Obst
- Central Queensland University, School of Health, Medical and Applied Sciences, College of Health Sciences, Bundaberg, Australia
| | - Craig R Aitken
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Queensland Health, Chermside, Australia
- Heart and Lung Institute, The Prince Charles Hospital, Chermside, Australia
| | - James Walsh
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Queensland Health, Chermside, Australia
- Heart and Lung Institute, The Prince Charles Hospital, Chermside, Australia
| | - Surendran Sabapathy
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
| | - Lewis Adams
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
| | - Norman R Morris
- Griffith University, School of Health Sciences and Social Work, Gold Coast, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
- Allied Health Research Collaborative, The Prince Charles Hospital, Queensland Health, Chermside, Australia
- Heart and Lung Institute, The Prince Charles Hospital, Chermside, Australia
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Tsutsumi Y, Momma H, Ebihara S, Nagatomi R. L-menthol administration facilitates breathing comfort during exhaustive endurance running and improves running capacity in well-trained runners: A randomized crossover study. Eur J Sport Sci 2023; 23:1913-1921. [PMID: 35997234 DOI: 10.1080/17461391.2022.2115404] [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] [Indexed: 11/03/2022]
Abstract
ABSTRACTThis study aimed to clarify the contribution of L-menthol administration to endurande exercise capacity. Thirteen male runners (age, 35.8 ± 7.8 years; peak oxygen uptake, 62.7 ± 6.8 mL kg-1 min-1) ran on treadmills at fixed intensities of their anaerobic thresholds to exhaustion. All participants underwent three trials-water ingestion (W-IG), L-menthol mouth rinsing (M-MR), and L-menthol ingestion (M-IG)- in a random order every 5 min while running. Breathing comfort (BC) was measured immediately after fluid intake. Dyspnea threshold against external inspiratory resistance was examined before and after the running test. The running time with M-IG (1683.9 ± 520.3 s) was longer than that with W-IG (1410.2 ± 465.9 s, effect size [ES] = 0.55). BC with M-IG (2.00 ± 0.74) was higher than that with W-IG (0.42 ± 0.79) at exhaustion (ES > 2.00). The dyspnea threshold after running decreased to 19.2 ± 7.6 cm H₂O L-1 s-1 with W-IG, whereas that with M-MR (26.2 ± 6.5 cm H₂O L-1 s-1) and M-IG (29.2 ± 2.8 cm H₂O L-1 s-1) remained high (p for interaction < 0.001). M-IG facilitated BC during running, improved endurance capacity, and prevented decreases in the dyspnea threshold against external inspiratory resistance after exhaustive running.HighlightsL-menthol ingestion facilitated breathing comfort during high intensity endurance running and improved exhaustive endurance running capacity.Even after exhaustion, L-menthol solution relieved dyspnea sensitivity against external inspiratory resistance.L-menthol ingestion might help athletes improve their endurance running capacity.
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Affiliation(s)
- Yoshiko Tsutsumi
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Haruki Momma
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoru Ebihara
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Ryoichi Nagatomi
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku University Graduate School of Biomedical Engineering, Sendai, Miyagi, Japan
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5
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Lo LLH, Lee EHM, Hui CLM, Chong CSY, Chang WC, Chan SKW, Lin JJ, Lo WTL, Chen EYH. Effect of high-endurance exercise intervention on sleep-dependent procedural memory consolidation in individuals with schizophrenia: a randomized controlled trial. Psychol Med 2023; 53:1708-1720. [PMID: 34615565 DOI: 10.1017/s0033291721003196] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Little is known about the effects of physical exercise on sleep-dependent consolidation of procedural memory in individuals with schizophrenia. We conducted a randomized controlled trial (RCT) to assess the effectiveness of physical exercise in improving this cognitive function in schizophrenia. METHODS A three-arm parallel open-labeled RCT took place in a university hospital. Participants were randomized and allocated into either the high-intensity-interval-training group (HIIT), aerobic-endurance exercise group (AE), or psychoeducation group for 12 weeks, with three sessions per week. Seventy-nine individuals with schizophrenia spectrum disorder were contacted and screened for their eligibility. A total of 51 were successfully recruited in the study. The primary outcome was sleep-dependent procedural memory consolidation performance as measured by the finger-tapping motor sequence task (MST). Assessments were conducted during baseline and follow-up on week 12. RESULTS The MST performance scored significantly higher in the HIIT (n = 17) compared to the psychoeducation group (n = 18) after the week 12 intervention (p < 0.001). The performance differences between the AE (n = 16) and the psychoeducation (p = 0.057), and between the AE and the HIIT (p = 0.999) were not significant. Yet, both HIIT (p < 0.0001) and AE (p < 0.05) showed significant within-group post-intervention improvement. CONCLUSIONS Our results show that HIIT and AE were effective at reverting the defective sleep-dependent procedural memory consolidation in individuals with schizophrenia. Moreover, HIIT had a more distinctive effect compared to the control group. These findings suggest that HIIT may be a more effective treatment to improve sleep-dependent memory functions in individuals with schizophrenia than AE alone.
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Affiliation(s)
| | - Edwin Ho Ming Lee
- Department of Psychiatry, University of Hong Kong, Pok Fu Lam, Hong Kong
| | | | | | - Wing Chung Chang
- Department of Psychiatry, University of Hong Kong, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Sherry Kit Wa Chan
- Department of Psychiatry, University of Hong Kong, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Jessie Jingxia Lin
- Neuroscience and Neurological Rehabilitation, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | | | - Eric Yu Hai Chen
- Department of Psychiatry, University of Hong Kong, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
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6
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Ogura A, Izawa KP, Tawa H, Kureha F, Wada M, Harada N, Ikeda Y, Kimura K, Kondo N, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Older phase 2 cardiac rehabilitation patients engaged in gardening maintained physical function during the COVID-19 pandemic. Heart Vessels 2021; 37:77-82. [PMID: 34152441 PMCID: PMC8215626 DOI: 10.1007/s00380-021-01892-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/11/2021] [Indexed: 01/09/2023]
Abstract
This study aimed to clarify the effects of gardening on hemodynamic response, rating of perceived exertion (RPE) during exercise, and body weight in patients in whom phase 2 cardiac rehabilitation (CR) was interrupted due to the Coronavirus disease 2019 (COVID-19) pandemic. Among 76 outpatients participating in consecutive phase 2 CR in both periods from March to April and June to July 2020, which were before and after CR interruption, respectively, at Sanda City Hospital were enrolled. The inclusion criterion was outpatients whose CR was interrupted due to COVID-19. Patients under the age of 65 were excluded. We compared the data of hemodynamic response and RPE during exercise on the last day before interruption and the first day after interruption when aerobic exercise was performed at the same exercise intensity in the gardener group and the non-gardener group. Forty-one patients were enrolled in the final analysis. After CR interruption, the gardener group did not show any significant difference in all items, whereas the non-gardener group experienced significant increase in HR (Peak) (p = 0.004) and worsening of the Borg scale scores for both dyspnea and lower extremity fatigue (p = 0.039 and p = 0.009, respectively). Older phase 2 CR patients engaged in gardening did not show any deterioration in hemodynamic response or RPE during exercise, despite CR interruption and refraining from going outside. Gardening may be recommended as one of the activities that can maintain or improve physical function in older phase 2 CR patients during the COVID-19 pandemic.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan.
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Nobuko Harada
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Yuki Ikeda
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Kaemi Kimura
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Naomi Kondo
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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Ogura A, Izawa KP, Tawa H, Kureha F, Wada M, Harada N, Ikeda Y, Kimura K, Kondo N, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Impact of the COVID-19 pandemic on phase 2 cardiac rehabilitation patients in Japan. Heart Vessels 2021; 36:1184-1189. [PMID: 33512598 PMCID: PMC7844103 DOI: 10.1007/s00380-021-01783-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/08/2021] [Indexed: 11/22/2022]
Abstract
This study aimed to clarify the effects of the interruption of cardiac rehabilitation (CR) and refraining from going outside due to the COVID-19 pandemic on hemodynamic response and rating of perceived exertion (RPE) during exercise including differences by age in phase 2 CR outpatients. Among 76 outpatients participating in consecutive phase 2 CR in both periods from March to April and June to July 2020, which were before and after CR interruption, respectively, at Sanda City Hospital were enrolled. The inclusion criterion was outpatients whose CR was interrupted due to COVID-19. We compared the data of hemodynamic response and RPE during exercise on the last day before interruption and the first day after interruption when aerobic exercise was performed at the same exercise intensity in the < 75 years group and ≥ 75 years group. Fifty-three patients were enrolled in the final analysis. Post-CR interruption, peak heart rate increased significantly (p = 0.009) in the < 75 years group, whereas in the ≥ 75 years group, weight and body mass index decreased significantly (p = 0.009, 0.011, respectively) and Borg scale scores for both dyspnea and lower extremities fatigue worsened significantly (both, p < 0.001). CR interruption and refraining from going outside due to the COVID-19 pandemic affected the hemodynamic response, RPE during exercise and body weight in phase 2 CR outpatients. In particular, patients aged ≥ 75 years appeared to be placed at an increased risk of frailty.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan.,Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan. .,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan.
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Nobuko Harada
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Yuki Ikeda
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Kaemi Kimura
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Naomi Kondo
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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8
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Buscemi A, Petralia MC, Ramaci T, Rapisarda A, Provazza C, Di Corrado D, Perciavalle V, Perciavalle V, Coco M. Ergojump evaluation of the explosive strength in volleyball athletes pre- and post-fascial treatment. Exp Ther Med 2019; 18:1470-1476. [PMID: 31384337 PMCID: PMC6639914 DOI: 10.3892/etm.2019.7628] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 12/28/2018] [Indexed: 01/03/2023] Open
Abstract
It has previously been demonstrated that physiological mechanisms are involved in muscle pain and fatigue, as the nociceptive afferents of the fascial system are able to modulate the afferent response of the central nervous system. The purpose of the present study was to evaluate a sample of volleyball players, and investigate whether osteopathic treatment of the lower limb muscle groups improved the explosive force of the limbs, whilst reducing spasms and tension, releasing tissue strain and correcting posture. A randomized control study was performed to evaluate 57 athletes who underwent fascial manipulative treatment to assess if such treatment affected the muscle strength of the lower limbs. The treatment group demonstrated a statistically significant improvement in the squatting jump test (P<0.0001) and in the counter movement jump test (P<0.0001). Furthermore, the control group did not exhibit any improvement in the squatting jump test (P<0.56) or in the counter movement jump test (P<0.32). The results suggested that correction of the fascial system required a minimum time of 30 days in order to obtain an improvement of fascial mechanics and sports performance. Therefore, use of a fascial protocol during athletic training will help improve the balance of the bands and, as a direct consequence, improve the efficiency of the musculoskeletal system, thereby reducing the risk of injury. It would therefore be advisable to perform osteopathic treatment techniques every two months during an athletic season to maintain the balance of the fascial system and obtain the most efficient results.
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Affiliation(s)
- Andrea Buscemi
- Department of Research, Center Studies of Osteopathy, I-95129 Catania, Italy
| | | | - Tiziana Ramaci
- Sciences of Man and of The Society, University Kore of Enna, I-94100 Enna, Italy
| | | | - Carmelo Provazza
- Department of Research, Center Studies of Osteopathy, I-95129 Catania, Italy
| | - Donatella Di Corrado
- Sciences of Man and of The Society, University Kore of Enna, I-94100 Enna, Italy
| | - Vincenzo Perciavalle
- Department of Biomedical and Biotechnological Sciences, University of Catania, I-95123 Catania, Italy
| | | | - Marinella Coco
- Department of Biomedical and Biotechnological Sciences, University of Catania, I-95123 Catania, Italy
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9
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Zanini A, Aiello M, Cherubino F, Zampogna E, Azzola A, Chetta A, Spanevello A. The one repetition maximum test and the sit-to-stand test in the assessment of a specific pulmonary rehabilitation program on peripheral muscle strength in COPD patients. Int J Chron Obstruct Pulmon Dis 2015; 10:2423-30. [PMID: 26648705 PMCID: PMC4648595 DOI: 10.2147/copd.s91176] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Individuals with COPD may present reduced peripheral muscle strength, leading to impaired mobility. Comprehensive pulmonary rehabilitation (PR) should include strength training, in particular to lower limbs. Furthermore, simple tools for the assessment of peripheral muscle performance are required. OBJECTIVES To assess the peripheral muscle performance of COPD patients by the sit-to-stand test (STST), as compared to the one-repetition maximum (1-RM), considered as the gold standard for assessing muscle strength in non-laboratory situations, and to evaluate the responsiveness of STST to a PR program. METHODS Sixty moderate-to-severe COPD inpatients were randomly included into either the specific strength training group or into the usual PR program group. Patients were assessed on a 30-second STST and 1-minute STST, 1-RM, and 6-minute walking test (6MWT), before and after PR. Bland-Altman plots were used to evaluate the agreement between 1-RM and STST. RESULTS The two groups were not different at baseline. In all patients, 1-RM was significantly related to the 30-second STST (r=0.48, P<0.001) and to 1-minute STST (r=0.36, P=0.005). The 30-second STST was better tolerated in terms of the perceived fatigue (P=0.002) and less time consuming (P<0.001) test. In the specific strength training group significant improvements were observed in the 30-second STST (P<0.001), 1-minute STST (P=0.005), 1-RM (P<0.001), and in the 6MWT (P=0.001). In the usual PR program group, significant improvement was observed in the 30-second STST (P=0.042) and in the 6MWT (P=0.001). CONCLUSION Our study shows that in stable moderate-to-severe inpatients with COPD, STST is a valid and reliable tool to assess peripheral muscle performance of lower limbs, and is sensitive to a specific PR program.
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Affiliation(s)
- Andrea Zanini
- Division of Pneumology, IRCCS Rehabilitation Institute of Tradate, Salvatore Maugeri Foundation, Tradate, Italy ; Division of Internal and Respiratory Medicine, Malcantonese Hospital, Giuseppe Rossi Foundation, Castelrotto, Switzerland
| | - Marina Aiello
- Respiratory Disease and Lung Function Unit, Department of Clinical and Experimental Medicine, University of Parma, Padiglione Rasori, Parma, Italy
| | - Francesca Cherubino
- Division of Pneumology, IRCCS Rehabilitation Institute of Tradate, Salvatore Maugeri Foundation, Tradate, Italy
| | - Elisabetta Zampogna
- Division of Pneumology, IRCCS Rehabilitation Institute of Tradate, Salvatore Maugeri Foundation, Tradate, Italy
| | - Andrea Azzola
- Division of Pneumology, Department of Internal Medicine, Ospedale Civico, Lugano, Switzerland
| | - Alfredo Chetta
- Respiratory Disease and Lung Function Unit, Department of Clinical and Experimental Medicine, University of Parma, Padiglione Rasori, Parma, Italy
| | - Antonio Spanevello
- Division of Pneumology, IRCCS Rehabilitation Institute of Tradate, Salvatore Maugeri Foundation, Tradate, Italy ; Department of Clinical and Experimental Medicine, University of Insubria, Varese, Italy
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10
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Nicolò A, Marcora SM, Sacchetti M. Respiratory frequency is strongly associated with perceived exertion during time trials of different duration. J Sports Sci 2015; 34:1199-206. [DOI: 10.1080/02640414.2015.1102315] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Shirakawa K, Yunoki T, Afroundeh R, Lian CS, Matsuura R, Ohtsuka Y, Yano T. Voluntary breathing increases corticospinal excitability of lower limb muscle during isometric contraction. Respir Physiol Neurobiol 2015; 217:40-5. [DOI: 10.1016/j.resp.2015.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 07/04/2015] [Accepted: 07/04/2015] [Indexed: 11/26/2022]
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12
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Slapsinskaite A, Razon S, Balagué Serre N, Hristovski R, Tenenbaum G. Local Pain Dynamics during Constant Exhaustive Exercise. PLoS One 2015; 10:e0137895. [PMID: 26421436 PMCID: PMC4589345 DOI: 10.1371/journal.pone.0137895] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/24/2015] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to delineate the topological dynamics of pain and discomfort during constant exercise performed until volitional exhaustion. Eleven physical education students were tested while cycling and running at a “hard” intensity level (e.g., corresponding to Borg’s RPE (6–20) = 15). During the tests, participants reported their discomfort and pain on a body map every 15s. “Time on task” for each participant was divided into five equal non-overlapping temporal windows within which their ratings were considered for analysis. The analyses revealed that the number of body locations with perceived pain and discomfort increased throughout the five temporal windows until reaching the mean (± SE) values of 4.2 ± 0.7 and 4.1 ± 0.6 in cycling and running, respectively. The dominant locations included the quadriceps and hamstrings during cycling and quadriceps and chest during running. In conclusion, pain seemed to spread throughout the body during constant cycling and running performed up to volitional exhaustion with differences between cycling and running in the upper body but not in the lower body dynamics.
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Affiliation(s)
- Agne Slapsinskaite
- Department of Health and Applied Science, INEFC University of Barcelona, Barcelona, Spain
- * E-mail:
| | - Selen Razon
- Department of Physical Education, Ball State University, Muncie, Indiana, United States of America
| | - Natàlia Balagué Serre
- Department of Health and Applied Science, INEFC University of Barcelona, Barcelona, Spain
| | - Robert Hristovski
- Department of Physical Education, Sport and Health, Ss. Cyril and Methodius University, Skopje, Macedonia
| | - Gershon Tenenbaum
- Department of Educational Psychology and Learning Systems, Florida State University, Tallahassee, Florida, United States of America
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13
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Abstract
Every body structure is wrapped in connective tissue, or fascia, creating a structural continuity that gives form and function to every tissue and organ. Currently, there is still little information on the functions and interactions between the fascial continuum and the body system; unfortunately, in medical literature there are few texts explaining how fascial stasis or altered movement of the various connective layers can generate a clinical problem. Certainly, the fascia plays a significant role in conveying mechanical tension, in order to control an inflammatory environment. The fascial continuum is essential for transmitting muscle force, for correct motor coordination, and for preserving the organs in their site; the fascia is a vital instrument that enables the individual to communicate and live independently. This article considers what the literature offers on symptoms related to the fascial system, trying to connect the existing information on the continuity of the connective tissue and symptoms that are not always clearly defined. In our opinion, knowing and understanding this complex system of fascial layers is essential for the clinician and other health practitioners in finding the best treatment strategy for the patient.
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Affiliation(s)
- Bruno Bordoni
- Department of Cardiology, IRCCS S Maria Nascente, Don Carlo Gnocchi Foundation, Milan, Italy ; CRESO Osteopathic Centre for Research and Studies, Milan, Italy
| | - Emiliano Zanier
- CRESO Osteopathic Centre for Research and Studies, Milan, Italy ; EdiAcademy, Milan, Italy
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14
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Neves LMT, Karsten M, Neves VR, Beltrame T, Borghi-Silva A, Catai AM. Respiratory muscle endurance is limited by lower ventilatory efficiency in post-myocardial infarction patients. Braz J Phys Ther 2014; 18:1-8. [PMID: 24675907 PMCID: PMC4183236 DOI: 10.1590/s1413-35552012005000134] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 06/18/2013] [Indexed: 11/22/2022] Open
Abstract
Background Reduced respiratory muscle endurance (RME) contributes to increased dyspnea
upon exertion in patients with cardiovascular disease. Objective The objective was to characterize ventilatory and metabolic responses during
RME tests in post-myocardial infarction patients without respiratory muscle
weakness. Method Twenty-nine subjects were allocated into three groups: recent myocardial
infarction group (RG, n=9), less-recent myocardial infarction group (LRG,
n=10), and control group (CG, n=10). They underwent two RME tests
(incremental and constant pressure) with ventilatory and metabolic analyses.
One-way ANOVA and repeated measures one-way ANOVA, both with Tukey post-hoc,
were used between groups and within subjects, respectively. Results Patients from the RG and LRG presented lower metabolic equivalent and
ventilatory efficiency than the CG on the second (50± 06, 50±
5 vs. 42± 4) and third part (50± 11, 51± 10 vs.
43± 3) of the constant pressure RME test and lower metabolic
equivalent during the incremental pressure RME test. Additionally, at the
peak of the incremental RME test, RG patients had lower oxygen uptake than
the CG. Conclusions Post-myocardial infarction patients present lower ventilatory efficiency
during respiratory muscle endurance tests, which appears to explain their
inferior performance in these tests even in the presence of lower pressure
overload and lower metabolic equivalent.
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Affiliation(s)
- Laura M T Neves
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
| | - Marlus Karsten
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
| | - Victor R Neves
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
| | - Thomas Beltrame
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
| | - Audrey Borghi-Silva
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
| | - Aparecida M Catai
- Cardiovascular Physical Therapy Laboratory, Nucleus of Research in Physical Exercise, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil
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15
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Neyroud D, Rüttimann J, Mannion AF, Millet GY, Maffiuletti NA, Kayser B, Place N. Comparison of neuromuscular adjustments associated with sustained isometric contractions of four different muscle groups. J Appl Physiol (1985) 2013; 114:1426-34. [DOI: 10.1152/japplphysiol.01539.2012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The extent and characteristics of muscle fatigue of different muscle groups when subjected to a similar fatiguing task may differ. Thirteen healthy young men performed sustained contractions at 50% maximal voluntary contraction (MVC) force until task failure, with four different muscle groups, over two sessions. Per session, one upper limb and one lower limb muscle group were tested (knee extensors and thumb adductor, or plantar and elbow flexors). Changes in voluntary activation level and contractile properties were derived from doublet responses evoked during and after MVCs before and after exercise. Time to task failure differed ( P < 0.05) between muscle groups (220 ± 64 s for plantar flexors, 114 ± 27 s for thumb adductor, 77 ± 25 s for knee extensors, and 72 ± 14 s for elbow flexors). MVC force loss immediately after voluntary task failure was similar (−30 ± 11% for plantar flexors, −37 ± 13% for thumb adductor, −34 ± 15% for knee extensors, and −40 ± 12% for elbow flexors, P > 0.05). Voluntary activation was decreased for plantar flexors only (from 95 ± 5% to 82 ± 9%, P < 0.05). Potentiated evoked doublet amplitude was more depressed for upper limb muscles (−59.3 ± 14.7% for elbow flexors and −60.1 ± 24.1% for thumb adductor, P < 0.05) than for knee extensors (−28 ± 15%, P < 0.05); no reduction was found in plantar flexors (−7 ± 12%, P > 0.05). In conclusion, despite different times to task failure when sustaining an isometric contraction at 50% MVC force for as long as possible, diverse muscle groups present similar loss of MVC force after task failure. Thus the extent of muscle fatigue is not affected by time to task failure, whereas this latter determines the etiology of fatigue.
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Affiliation(s)
- Daria Neyroud
- Institute of Movement Sciences and Sports Medicine, University of Geneva, Geneva, Switzerland
| | - Jennifer Rüttimann
- Institute of Movement Sciences and Sports Medicine, University of Geneva, Geneva, Switzerland
| | | | | | | | - Bengt Kayser
- Institute of Movement Sciences and Sports Medicine, University of Geneva, Geneva, Switzerland
| | - Nicolas Place
- Institute of Movement Sciences and Sports Medicine, University of Geneva, Geneva, Switzerland
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16
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Koglin L, Kayser B. Control and sensation of breathing during cycling exercise in hypoxia under naloxone: a randomised controlled crossover trial. EXTREME PHYSIOLOGY & MEDICINE 2013; 2:1. [PMID: 23849512 PMCID: PMC3710144 DOI: 10.1186/2046-7648-2-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 11/13/2012] [Indexed: 11/10/2022]
Abstract
Background Opioid receptors are possibly involved in the perception of exertion and the ventilatory response to exercise. We compared incremental cycling exercise in conditions of normoxia and hypoxia (11% O2) after injection of the opioid receptor antagonist naloxone (30 mg i.v.) or placebo. Naloxone was expected to increase sensation of breathing and cycling and to curtail exercise performance more in hypoxia. Methods Ten healthy subjects (29 ± 2 years, 183 ± 6 cm, 75 ± 7 kg, mean ± SD) cycled in normoxia and hypoxia until voluntary exhaustion, receiving naloxone or placebo in a balanced double-blind crossover design. Results Hypoxia decreased peak power output by 37%–39% with placebo and naloxone (P < 0.001, no effect of naloxone). Switching to normoxia at exhaustion in hypoxia allowed continuing up to 97%–100% of power developed in normoxia with placebo and naloxone (P < 0.001, no effect of naloxone). Perceived exertion increased in hypoxia, dropped upon switching to normoxia and increased again towards exhaustion, no effect of naloxone. SpO2 (earlobe oximetry) was lower in hypoxia, dropping to 64%–68% with naloxone and placebo. The ventilatory response to exercise in normoxia and hypoxia was not changed by naloxone. Conclusions It follows that in healthy subjects the ventilatory response and the perception of exertion in hypoxia as compared to normoxia do not involve the endogenous opioid system, and the latter does not play a role in limiting maximum exercise capacity in hypoxia.
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Affiliation(s)
- Laurent Koglin
- Institute of Movement Sciences and Sports Medicine, Faculty of medicine, University of Geneva, 10, rue du Conseil Général, Genève 4, 1205, Switzerland.
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17
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Relationship between inspiratory muscle capacity and peak exercise tolerance in patients post-myocardial infarction. Heart Lung 2012; 41:137-45. [DOI: 10.1016/j.hrtlng.2011.07.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 07/20/2011] [Accepted: 07/27/2011] [Indexed: 11/21/2022]
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18
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Villiot-Danger JC, Villiot-Danger E, Borel JC, Pépin JL, Wuyam B, Vergès S. Respiratory muscle endurance training in obese patients. Int J Obes (Lond) 2010; 35:692-9. [PMID: 20805830 DOI: 10.1038/ijo.2010.191] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Increased respiratory muscle work is associated with dyspnea and poor exercise tolerance in obese patients. We evaluated the effect of respiratory muscle endurance training (RMET) on respiratory muscle capacities, symptoms and exercise capacity in obese patients. DESIGN A total of 20 obese patients hospitalized for 26 ± 6 days to follow a low-calorie diet and a physical activity program were included in this case-control study. Of them, 10 patients performed RMET (30-min isocapnic hyperpnea at 60-80% maximum voluntary ventilation, 3-4 times per week during the whole hospitalization period: RMET group), while the other 10 patients performed no respiratory training (control (CON) group). RMET and CON groups were matched for body mass index (BMI) (45 ± 7 kg m(-2)) and age (42 ± 12 years). Lung function, respiratory muscle strength and endurance, 6-min walking distance, dyspnea (Medical Research Council scale) and quality of life (short-form health survey 36 questionnaire) were assessed before and after intervention. RESULTS Similar BMI reduction was observed after hospitalization in the RMET and CON groups (-2 ± 1 kg m(-2), P < 0.001). No significant change in lung function and respiratory muscle strength was observed except for vital capacity, which increased in the RMET group (+0.20 ± 0.26 l, P = 0.039). Respiratory muscle endurance increased in the RMET group only (+52 ± 27%, P < 0.001). Compared with the CON group, the RMET group had greater improvement in 6MWT (+54 ± 35 versus +1 ± 7 m, P = 0.007), dyspnea score (-2 ± 1 versus -1 ± 1 points, P = 0.047) and quality of life (total score: +251 ± 132 versus +84 ± 152 points, P = 0.018) after hospitalization. A significant correlation between the increase in respiratory muscle endurance and improvement in 6MWT distance was observed (r (2) = 0.36, P = 0.005). CONCLUSIONS The present study indicates that RMET is feasible in obese patients and can induce significant improvement in dyspnea and exercise capacity. RMET may be a promising tool to improve functional capacity and adherence to physical activities in this population, but further studies are needed to confirm these results.
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Affiliation(s)
- J-C Villiot-Danger
- HP2 Laboratory, INSERM ERI17, Joseph Fourier University, Grenoble, France
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19
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Manali ED, Lyberopoulos P, Triantafillidou C, Kolilekas LF, Sotiropoulou C, Milic-Emili J, Roussos C, Papiris SA. MRC chronic Dyspnea Scale: Relationships with cardiopulmonary exercise testing and 6-minute walk test in idiopathic pulmonary fibrosis patients: a prospective study. BMC Pulm Med 2010; 10:32. [PMID: 20509928 PMCID: PMC2893122 DOI: 10.1186/1471-2466-10-32] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 05/28/2010] [Indexed: 12/31/2022] Open
Abstract
Background Exertional dyspnea is the most prominent and disabling feature in idiopathic pulmonary fibrosis (IPF). The Medical Research Chronic (MRC) chronic dyspnea score as well as physiological measurements obtained during cardiopulmonary exercise testing (CPET) and the 6-minute walk test (6MWT) are shown to provide information on the severity and survival of disease. Methods We prospectively recruited IPF patients and examined the relationship between the MRC score and either CPET or 6MWT parameters known to reflect physiologic derangements limiting exercise capacity in IPF patients Results Twenty-five patients with IPF were included in the study. Significant correlations were found between the MRC score and the distance (r = -.781, p < 0.001), the SPO2 at the initiation and the end (r = -.542, p = 0.005 and r = -.713, p < 0.001 respectively) and the desaturation index (r = .634, p = 0.001) for the 6MWT; the MRC score and VO2 peak/kg (r = -.731, p < 0.001), SPO2 at peak exercise (r = -. 682, p < 0.001), VE/VCO2 slope (r = .731, p < 0.001), VE/VCO2 at AT (r = .630, p = 0.002) and the Borg scale at peak exercise (r = .50, p = 0.01) for the CPET. In multiple logistic regression analysis, the only variable independently related to the MRC is the distance walked at the 6MWT. Conclusion In this population of IPF patients a good correlation was found between the MRC chronic dyspnoea score and physiological parameters obtained during maximal and submaximal exercise testing known to reflect ventilatory impairment and exercise limitation as well as disease severity and survival. This finding is described for the first time in the literature in this group of patients as far as we know and could explain why a simple chronic dyspnea score provides reliable prognostic information on IPF.
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Affiliation(s)
- Effrosyni D Manali
- Second Pulmonary Department, "Attikon" University Hospital, National and Kapodistrian University of Athens, Greece
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20
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Scano G, Innocenti-Bruni G, Stendardi L. Do obstructive and restrictive lung diseases share common underlying mechanisms of breathlessness? Respir Med 2010; 104:925-33. [PMID: 20303724 DOI: 10.1016/j.rmed.2010.02.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 02/16/2010] [Accepted: 02/22/2010] [Indexed: 11/28/2022]
Abstract
This review tries to answer two main questions: (i) What are the neurophysiological underpinnings of the most commonly selected cluster descriptors which define the qualitative dimension of dyspnea in patients? (ii) How do mechanical constraints affect dyspnea? (iii) Do obstructive and restrictive lung diseases share some common underlying mechanisms? Qualitative dimensions of dyspnea, which allude to increased respiratory work/effort breathing, reflect a harmonious coupling between increased respiratory motor output and lung volume displacement in healthy subjects. Descriptors that allude to unsatisfied inspiration are the dominant qualitative descriptors in patients with a variety of respiratory diseases. It is possible that sensory feedback from a multitude of mechanoreceptors throughout the respiratory system (in the muscle, chest wall, airways and lung parenchyma) collectively convey information to the consciousness that volume/flow or chest wall displacement is inadequate for the prevailing respiratory drive. The data would lend support to the idea that: (i) an altered afferent proprioceptive peripheral feedback signals that ventilatory response is inadequate to the prevailing motor drive, reflecting neuromechanical uncoupling (NMU), (ii) mechanical constraints on volume expansion (dynamic restriction) play a pivotal role in dyspnea causation in patients with a variety of either obstructive or restrictive respiratory disorders, and (iii) all of the physiological adaptations that optimize neuromechanical coupling in obstructive and restrictive disorders are seriously disrupted so that an NMU underpins cluster descriptors of dyspnea which are similar in obstructed and in restricted patients.
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Affiliation(s)
- Giorgio Scano
- Department of Internal Medicine, Section of Clinical Immunology and Respiratory Medicine, University of Florence, Italy.
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21
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The respiratory muscles in eucapnic obesity: Their role in dyspnea. Respir Med 2009; 103:1276-85. [DOI: 10.1016/j.rmed.2009.03.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 02/27/2009] [Accepted: 03/20/2009] [Indexed: 11/20/2022]
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Borg E, Borg G, Larsson K, Letzter M, Sundblad BM. An index for breathlessness and leg fatigue. Scand J Med Sci Sports 2009; 20:644-50. [PMID: 19602182 DOI: 10.1111/j.1600-0838.2009.00985.x] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The features of perceived symptoms causing discontinuation of strenuous exercise have been scarcely studied. The aim was to characterize the two main symptoms causing the discontinuation of heavy work in healthy persons as well as describe the growth of symptoms during exercise. Breathlessness (b) and leg fatigue (l) were assessed using the Borg CR10 Scale and the Borg CR100 (centiMax) Scale, during a standardized exercise test in 38 healthy subjects (24-71 years). The b/l-relationships were calculated for terminal perceptions (ERI(b/l)), and the growth of symptoms determined by power functions for the whole test, as well as by growth response indexes (GRI). This latter index was constructed as a ratio between power levels corresponding to a very strong and a moderate perception. In the majority (71%) of the test subjects, leg fatigue was the dominant symptom at the conclusion of exercise (P<0.001) and the b/l ratio was 0.77 (CR10) and 0.75 (CR100), respectively. The GRI for breathlessness and leg fatigue was similar, with good correlations between GRI and the power function exponent (P<0.005). In healthy subjects, leg fatigue is the most common cause for discontinuing an incremental exercise test. The growth functions for breathlessness and leg fatigue during work are, however, almost parallel.
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Affiliation(s)
- E Borg
- Department of Psychology, Stockholm University, Sweden.
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Ross E, Middleton N, Shave R, George K, McConnell A. Changes in respiratory muscle and lung function following marathon running in man. J Sports Sci 2008; 26:1295-301. [DOI: 10.1080/02640410802104904] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
PURPOSE OF REVIEW Dyspnea--the perception of respiratory discomfort--is a primary symptom of asthma. This review examines possible ways to link mechanisms, measurement and treatment that will increase our understanding of this condition. RECENT FINDINGS Functional neuroimaging methods have proven to be powerful tools that serve as advanced models of sensor motor brain function. Studies examining functional neuroimaging methods have revealed activation of distinct brain areas associated with increased dyspnea. Pulmonary hyperinflation has been proposed to influence the perception of dyspnea. The association of hyperinflation with minor levels of bronchoconstriction reflects the partition of the sensory effect of airway narrowing per se from that of the attendant elastic loading of the inspiratory muscles. There is evidence to suggest, however, that hyperinflation does not play an important role in the pathogenesis of exercise dyspnea as it does during induced bronchoconstriction. Decreased levels of perception of airway obstruction may be a risk factor associated with life-threatening asthma. A poor perceiver may be vulnerable to further hypoxia-induced suppression of respiratory sensation. Monitoring the response to bronchodilator therapy with formoterol and salbutamol in patients with acute or chronic asthma has resulted in significantly faster improvement in dyspnea, within 2 min. SUMMARY Regardless of the factors involved, much variability in dyspnea scores remains unexplained. Quantitative and qualitative assessment of the perception of dyspnea, symptom measurement and quality of life complement physiological measurements and contribute to our understanding of dyspnea in asthma.
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Affiliation(s)
- Giorgio Scano
- Department of Internal Medicine, Section of Immunology and Respiratory Disease, University of Florence, and Fondazione Don C. Gnocchi, Pozzolatico, Florence, Italy.
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Brissot R, Gonzalez-Bermejo J, Lassalle A, Desrues B, Doutrellot PL. Fatigue and respiratory disorders. ACTA ACUST UNITED AC 2006; 49:320-30, 403-12. [PMID: 16780993 DOI: 10.1016/j.annrmp.2006.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2006] [Accepted: 04/03/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVES To analyze the factors at the origin of fatigue in respiratory disorders. To assess fatigue and its functional impact on patients affected from respiratory diseases. To evaluate the results of comprehensive care on fatigue and functional capacity. MATERIALS AND METHODS We systematically reviewed the literature in Medline and the Cochrane Library, using the following keywords: fatigue, respiratory disorders, questionnaire, evaluation, assessment, randomized controlled trial, meta-analysis. RESULTS Fatigue is a high frequency symptom (90%) and takes an important place, as much as dyspnea, in the genesis of the respiratory induced handicap. Its assessment is varied, according to the studies. It originates from multiple causes, as shown from clinical and experimental studies. The main treatment consists in rehabilitation, using physical exercises. Its efficacy is demonstrated on physical endurance, but is not clear in terms of general fatigue. CONCLUSION Although fatigue is very frequent complaint, along with a major disabling condition, the comprehensive assessment of fatigue, in respiratory disorders, including its physical and cognitive components, is not still really codified. Rehabilitation is the main treatment. Its efficiency has been demonstrated on the physical and functional components of fatigue. Its results on perceived fatigue remains to be evaluated.
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Affiliation(s)
- R Brissot
- Service de Médecine Physique et de Réadaptation, Hôpital de Pontchaillou, CHU de Rennes, France.
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