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Inspiratory muscles

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https://www.readbyqxmd.com/read/27923982/effect-of-expiratory-positive-airway-pressure-on-tidal-volume-during-non-invasive-ventilation
#1
W Kinnear, L Watson, P Smith, L Johnson, S Burrows, J Colt, M Sovani, A Khanna
During non-invasive ventilation (NIV), tidal volume (V t) will depend upon the difference between inspiratory and expiratory positive airway pressure (IPAP and EPAP, respectively), provided the respiratory muscles are relaxed and the lungs and chest wall therefore move along their passive pressure-volume curves. To test this hypothesis, we studied the effect of increasing EPAP during pressure-controlled modes of NIV in 30 long-term ventilator users (10 each with scoliosis, obesity hypoventilation or neuromuscular disorders)...
December 6, 2016: Chronic Respiratory Disease
https://www.readbyqxmd.com/read/27923938/computerized-respiratory-sounds-novel-outcomes-for-pulmonary-rehabilitation-in-copd
#2
Cristina Jácome, Alda Marques
BACKGROUND: Computerized respiratory sounds are a simple and noninvasive measure to assess lung function. Nevertheless, their potential to detect changes after pulmonary rehabilitation (PR) is unknown and needs clarification if respiratory acoustics are to be used in clinical practice. Thus, this study investigated the short- and mid-term effects of PR on computerized respiratory sounds in subjects with COPD. METHODS: Forty-one subjects with COPD completed a 12-week PR program and a 3-month follow-up...
December 6, 2016: Respiratory Care
https://www.readbyqxmd.com/read/27922742/the-diaphragm-acts-as-a-brake-during-expiration-to-prevent-lung-collapse
#3
Mariangela Pellegrini, Göran Hedenstierna, Agneta Roneus, Monica Segelsjö, Anders Larsson, Gaetano Perchiazzi
RATIONALE: The diaphragm is the major inspiratory muscle and is assumed to relax during expiration. However, electrical post-inspiratory activity has been observed. Whether or not there is an expiratory diaphragmatic contraction that preserves lung patency has yet to be explored. OBJECTIVE: We hypothesized the occurrence of an expiratory diaphragmatic contraction directed at stabilizing peripheral airways and preventing or reducing cyclic expiratory lung collapse...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27912964/a-systematic-review-and-meta-analysis-of-the-herbal-formula-buzhong-yiqi-tang-for-stable-chronic-obstructive-pulmonary-disease
#4
REVIEW
Yuanbin Chen, Johannah Linda Shergis, Lei Wu, Xuhua Yu, Qigang Zeng, Yinji Xu, Xinfeng Guo, Anthony Lin Zhang, Charlie Changli Xue, Lin Lin
OBJECTIVE: To systematically evaluate the efficacy and safety of Buzhong Yiqi Tang (BZYQT) for stable chronic obstructive pulmonary disease (COPD). METHODS: Three electronic English databases (PubMed, EMBASE and CENTRAL) and four Chinese databases (CBM, CNKI, CQVIP and WFMO) were searched from their inceptions until 30th June 2016. Participants were diagnosed with COPD according to the Chinese Medical Association's COPD diagnosis and treatment guidelines or Global Initiative for Chronic Obstructive Lung Disease (GOLD), and were in stable stage...
December 2016: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/27908251/effects-of-an-outpatient-service-rehabilitation-programme-in-patients-affected-by-pulmonary-arterial-hypertension-an-observational-study
#5
Maurizio Bussotti, Paola Gremigni, Roberto Fe Pedretti, Patrycja Kransinska, Silvia Di Marco, Paola Corbo, Giovanni Marchese, Paolo Totaro, Marinella Sommaruga
BACKGROUND: Pulmonary arterial hypertension (PAH) is a rare disease characterised by a severe impairment of functional status and quality of life (QoL). Use of rehabilitative programmes may help to improve outcomes. The aim of this pre/post test case series was to evaluate the impact of a training program, including sessions of aerobic and resistance exercise, inspiratory muscle reinforcement, slow breathing, relaxation, and psychological support, on functional outcomes. METHODS: Fifteen patients affected by PAH, in World Health Organization (WHO) Functional Class (FC) II or III and in stable clinical condition, were included in a 4-week cardiorespiratory training programme conducted in outpatient service...
November 30, 2016: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/27904541/effect-of-eight-week-aerobic-resistive-and-interval-exercise-routines-on-respiratory-parameters-in-non-athlete-women
#6
Vahan Moradians, Alireza Rahimi, Seyed Ali Javad Moosavi, Fateme Sadat Sahebkar Khorasani, Ali Mazaherinejad, Masoud Mortezazade, Hanieh Raji
BACKGROUND: There are not many studies about the effects of physical activity on pulmonary function in normal population. However, it seems that strengthening and persevering respiratory muscles is an effective technique for improving pulmonary function. OBJECTIVE: The purpose of this study was to evaluate and compare the effects of eight-week aerobic, resistance, and interval exercise routines on respiratory parameters in non-athlete women. MATERIALS AND METHODS: Thirty-six non-athlete women between 18-25 years old participated in this prospective quasi-experimental trial...
2016: Tanaffos
https://www.readbyqxmd.com/read/27904539/the-effect-of-renal-transplantation-on-respiratory-muscle-strength-in-patients-with-end-stage-renal-disease
#7
Sasan Tavana, Samaneh Mirzaei
BACKGROUND: There is evidence of musculoskeletal and respiratory involvement in patients with chronic kidney disease (CKD). This is attributed to protein calorie imbalance that is caused by the disease process, and hemodialysis and is generally referred to as uremic myopathy. This results in calcification of respiratory muscles such as diaphragm and intercostal muscles. There are limited data about respiratory muscle strength in patients with CKD. We intended to evaluate the effect of kidney transplantation on respiratory muscles strength in patients with CKD...
2016: Tanaffos
https://www.readbyqxmd.com/read/27888836/limited-predictability-of-maximal-muscular-pressure-using-the-difference-between-peak-airway-pressure-and-positive-end-expiratory-pressure-during-proportional-assist-ventilation-pav
#8
Po-Lan Su, Pei-Shan Kao, Wei-Chieh Lin, Pei-Fang Su, Chang-Wen Chen
BACKGROUND: If the proportional assist ventilation (PAV) level is known, muscular effort can be estimated from the difference between peak airway pressure and positive end-expiratory pressure (PEEP) (ΔP) during PAV. We conjectured that deducing muscle pressure from ΔP may be an interesting method to set PAV, and tested this hypothesis using the oesophageal pressure time product calculation. METHODS: Eleven mechanically ventilated patients with oesophageal pressure monitoring under PAV were enrolled...
November 27, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27886855/electrically-induced-mechanomyograms-reflect-inspiratory-muscle-strength-in-young-or-elderly-subjects
#9
Shogo Watanabe, Ippei Nojima, Yuuna Agarie, Tatsunori Watanabe, Shinichi Fukuhara, Takeshi Fujinaga, Hisao Oka
BACKGROUND: Respiratory muscle strength has been used as a tool for evaluating respiratory rehabilitation in chronic obstructive pulmonary disease. However, mouth pressure measurement evaluated by maximum expiratory mouth pressure (PEmax) or inspiratory mouth pressure (PImax) offers an indirect method for measuring respiratory muscle strength. We demonstrated the evaluation of diaphragm contractility using a mechanomyogram (MMG), which is the mechanical signal generated by the motion of the diaphragm induced by the electric stimulation of the phrenic nerve...
November 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27881723/intraspinal-microstimulation-and-diaphragm-activation-following-cervical-spinal-cord-injury
#10
Lynne M Mercier, Elisa J Gonzalez-Rothi, Kristi A Streeter, Savannah S Posgai, Alexander S Poirier, David D Fuller, Paul J Reier, David M Baekey
Intraspinal microstimulation (ISMS), using implanted electrodes, can evoke locomotor movements after spinal cord injury (SCI), but has not been explored in the context of respiratory motor output. An advantage over epidural and direct muscle stimulation is the potential of ISMS to selectively stimulate components of the spinal respiratory network. The present study tested the hypothesis that medullary respiratory activity could be used to trigger mid-cervical ISMS and diaphragm motor unit activation in rats with cervical SCI...
November 23, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27879385/fio2-in-an-adult-model-simulating-high-flow-nasal-cannula-therapy
#11
Yusuke Chikata, Mutsuo Onodera, Jun Oto, Masaji Nishimura
BACKGROUND: High-flow nasal cannula therapy (HFNC) is widely used for patients with acute respiratory failure. HFNC has a number of physiological effects. Although FIO2 is considered to be constant, because HFNC is an open system, FIO2 varies according to inspiratory flow, tidal volume (VT), and HFNC gas flow. We investigated the influence of HFNC gas flow and other respiratory parameters on FIO2 during HFNC. METHODS: We evaluated an HFNC system and, for comparison, a conventional oxygen therapy system...
November 22, 2016: Respiratory Care
https://www.readbyqxmd.com/read/27874942/breathing-training-on-lower-esophageal-sphincter-as-a-complementary-treatment-of-gastroesophageal-reflux-disease-gerd-a-systematic-review
#12
M Casale, L Sabatino, A Moffa, F Capuano, V Luccarelli, M Vitali, M Ribolsi, M Cicala, F Salvinelli
OBJECTIVE: Gastroesophageal reflux disease (GERD) represents one of the most common gastrointestinal disorders, but is still a challenge to cure. Proton pump inhibitors (PPIs) are currently the GERD's standard treatment, although not successful in all patients; some concerns have been raised regarding their long term consumption. Recently, some studies showed the benefits of inspiratory muscle training in increasing the lower esophageal sphincter pressure in patients affected by GERD, thereby reducing their symptoms...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27862675/the-physiotherapist-and-the-esophageal-cancer-patient-from-prehabilitation-to-rehabilitation
#13
REVIEW
E M Guinan, J Dowds, C Donohoe, J V Reynolds, J Hussey
Esophageal cancer is a serious malignancy often treated with multimodal interventions and complex surgical resection. As treatment moves to centers of excellence with emphasis on enhanced recovery approaches, the role of the physiotherapist has expanded. The aim of this review is to discuss the rationale behind both the evolving prehabilitative role of the physiotherapist and more established postoperative interventions for patients with esophageal cancer. While a weak association between preoperative cardiopulmonary fitness and post-esophagectomy outcome is reported, cardiotoxicity during neoadjuvant chemotherapy and/or radiotherapy may heighten postoperative risk...
November 9, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27860259/resp%C3%A4-ratory-muscle-strength-%C3%A4-n-pat%C3%A4-ents-w%C3%A4-th-pulmonary-hypertens%C3%A4-on-the-relat%C3%A4-onsh%C3%A4-p-w%C3%A4-th-exerc%C3%A4-se-capac%C3%A4-ty-phys%C3%A4-cal-act%C3%A4-v%C3%A4-ty-level-and-qual%C3%A4-ty-of-l%C3%A4-fe
#14
Goksen Kuran Aslan, Buket Akıncı, Ipek Yeldan, Gulfer Okumus
INTRODUCTION: Pulmonary hypertension (PH) is characterized by exertional dyspnea, fatigue, chest pain, dizziness, and syncope. Physical activity, peripheral and respiratory muscle strength reduces in pateints with PH. Little is known about respiratory muscle weakness and related outcomes. OBJECTIVES: The aims of the study were to determine respiratory muscle strength and to investigate the relationship between respiratory muscle strength and spirometric measurements, exercise capacity, physical activity level, quality of life, and pulmonary hemodynamics in patients with PH...
November 17, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27856936/reveglucosidase-alfa-bmn-701-an-igf-2-tagged-rhacid-%C3%AE-glucosidase-improves-respiratory-functional-parameters-in-a-murine-model-of-pompe-disease
#15
Jeff Peng, Jill Dalton, Mark Butt, Kristin Tracy, Derek Kennedy, Peter Haroldsen, Rhea Cahayag, Stephen Zoog, Charles A O'Neill, Laurie Tsuruda
Pompe disease is a rare neuromuscular disorder caused by an acid α-glucosidase (GAA) deficiency resulting in glycogen accumulation in muscle, leading to myopathy and respiratory weakness. Reveglucosidase alfa (BMN 701), is an insulin-like growth factor 2 (IGF2) tagged rhGAA that enhances rhGAA cellular uptake via a glycosylation independent IGF2-binding region of the cation-independent mannose-6-phosphate receptor (CI-MPR). These studies evaluated the effects of reveglucosidase alfa treatment on glycogen clearance in muscle relative to rhGAA as well as changes in respiratory function and glycogen clearance in respiratory related tissue in a Pompe mouse model (GAA(tm1Rabn))...
November 16, 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27832132/coordinated-respiratory-motor-activity-in-nerves-innervating-the-upper-airway-muscles-in-rats
#16
Satoshi Tachikawa, Kiyomi Nakayama, Shiro Nakamura, Ayako Mochizuki, Takehiko Iijima, Tomio Inoue
Maintaining the patency of the upper airway during breathing is of vital importance. The activity of various muscles is related to the patency of the upper airway. In the present study, we examined the respiratory motor activity in the efferent nerves innervating the upper airway muscles to determine the movements of the upper airway during respiration under normocapnic conditions (pH = 7.4) and in hypercapnic acidosis (pH = 7.2). Experiments were performed on arterially perfused decerebrate rats aged between postnatal days 21-35...
2016: PloS One
https://www.readbyqxmd.com/read/27826401/effects-of-ramadan-fasting-on-inspiratory-muscle-function
#17
Mohsen Soori, Shahram Mohaghegh, Maryam Hajain, Behrooz Moraadi
BACKGROUND: Ramadan fasting is a major challenge for exercising Muslims especially in warm seasons. There is some evidence to indicate that Ramadan fasting causes higher subjective ratings of perceived exertion (RPE) in fasting Muslims. The mechanisms of this phenomenon are not known exactly. The role of respiratory muscle strength in this regard has not been studied yet. OBJECTIVES: The aim of this study was investigation of the effects of Ramadan fasting on respiratory muscle strength...
September 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/27822031/effects-of-aerobic-training-combined-with-respiratory-muscle-stretching-on-the-functional-exercise-capacity-and-thoracoabdominal-kinematics-in-patients-with-copd-a-randomized-and-controlled-trial
#18
Juliano T Wada, Erickson Borges-Santos, Desiderio Cano Porras, Denise M Paisani, Alberto Cukier, Adriana C Lunardi, Celso Rf Carvalho
BACKGROUND: Patients with COPD present a major recruitment of the inspiratory muscles, predisposing to chest incoordination, increasing the degree of dyspnea and impairing their exercise capacity. Stretching techniques could decrease the respiratory muscle activity and improve their contractile capacity; however, the systemic effects of stretching remain unknown. OBJECTIVE: The aim of this study was to evaluate the effects of aerobic training combined with respiratory muscle stretching on functional exercise capacity and thoracoabdominal kinematics in patients with COPD...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27821939/the-correlation-of-respiratory-muscle-strength-and-cough-capacity-in-stroke-patients
#19
Myeong-Rae Jo, Nan-Soo Kim
[Purpose] The purpose of this study was to investigate the correlation between respiratory muscle strength and cough capacity in stroke patients. [Subjects and Methods] Forty-two stroke patients were assigned to 2 different groups (intervention group=21, control group=21). Both groups participated in a conventional stroke rehabilitation program, with the intervention group also receiving respiratory muscle training for 20 to 30 minutes a day, 3 times a week for 8 weeks. Respiratory muscle strength (maximal inspiratory pressure, maximal expiratory pressure), forced vital capacity, and cough capacity were measured...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27821930/effects-of-fast-expiration-exercises-without-pressure-on-the-respiratory-muscle-strength-of-healthy-subjects
#20
Hiroshi Ishida, Yuri Kuramoto, Daiki Ikeda, Susumu Watanabe
[Purpose] The aim of this investigation was to determine the effects of 4 weeks of fast expiration exercises performed without pressure on respiratory muscle strength. [Subjects and Methods] Respiratory muscle strength of the training group that performed fast expiration exercises (n=12) was compared with that of a control group that performed no exercises (n=12). The fast expiration exercises were performed using a peak expiratory flow meter device and consisted of 20 fast expiration exercises performed 3 times per week for 4 weeks...
October 2016: Journal of Physical Therapy Science
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