scholarly journals Respiratory Function in Healthy Taiwanese Infants: Tidal Breathing Analysis, Passive Mechanics, and Tidal Forced Expiration

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0142797 ◽  
Author(s):  
Shen-Hao Lai ◽  
Sui-Ling Liao ◽  
Tsung-Chieh Yao ◽  
Ming-Han Tsai ◽  
Man-Chin Hua ◽  
...  
Keyword(s):  
Respiratory Function ◽  
Forced Expiration ◽  
Tidal Breathing ◽  
Passive Mechanics

Physiotherapy in chest disease

1980 ◽  
Vol 18 (8) ◽  
pp. 29-31
Keyword(s):  
Respiratory Function ◽  
Positive Pressure ◽  
Forced Expiration ◽  
Breathing Exercises ◽  
Postural Drainage ◽  
Chest Disease ◽  
General Mobility ◽  
Intermittent Positive Pressure Breathing ◽  
Do So

Physiotherapy is given to patients with chest disease in the hope of aiding the removal of secretions, improving respiratory function and increasing general mobility. Evaluating physiotherapy is difficult and until recently few attempts have been made to do so. This article considers the use of postural drainage, chest percussion and vibration, intermittent positive pressure breathing, forced expiration technique, breathing exercises and general exercises for some common chest conditions.

scholarly journals Yoga Practice Has Minor Influence on Respiratory Function at Rest in Men and Women

2018 ◽  
Vol 1 (88) ◽  
Author(s):  
Kristina Zaičenkovienė ◽  
Arvydas Stasiulis ◽  
Roma Aleksandravičienė ◽  
Loreta Stasiulevičienė
Keyword(s):  
Pulmonary Function ◽  
Respiratory Function ◽  
Vital Capacity ◽  
Inspiratory Flow ◽  
Hatha Yoga ◽  
Forced Expiration ◽  
Yoga Practice ◽  
Men And Women ◽  
Minor Influence ◽  
Expiratory Flow

Research background and hypothesis. Hatha yoga breathing has the potential of training the respiratory system in such a way that it helps an individual to cope with the respiratory demand (Ray et al., 2011).Research aim was to compare pulmonary function variables between physically inactive subjects and the ones practicing hatha yoga and to evaluate changes after 6 months of yoga practice in the latter group. Research methods. Pulmonary function was measured by means of the gas analyser “Oxycon Mobile” (Germany) before and after 6 months of yoga training in men (n = 11) (age – 30.8 (7.06), BMI – 25.6 (2.6)) and women (n = 11) (age – 28.9 (6.86), BMI – 22.5 (2.3)) practicing yoga and control subjects (n = 22) of similar age. Measurements included forced vital capacity (FVC), forced expiration volume in one second (FEV(1)), forced inspiratory volume in one second FIV1, vital capacity (VC), peak expiratory flow (PEF), forced expiratory flow rate (FEF (25–75)%), forced inspiratory flow at 50% of the vital capacity (FIF50%), maximum voluntary ventilation (MVV), vital capacity (VC MAX), peak inspiratory flow (PIF), etc.Research results. Pulmonary function measures FEF 75/85 (L/s) (p = 0.036), total volume inspired FVC IN (L) (p = 0.014), FIV1 (L) (p = 0.045) were significantly higher in the group practicing yoga than in the control group of women, and VC MAX (%) (p = 0.018), FEV 1 (%) (p = 0.041), FEF 25 (L/s) (p = 0.017), FVC IN (L) (p = 0.002) in men practicing yoga, than in men not practicing yoga. They also demonstrated higher values of MVV (L/min)  (p = 0.068) and FVC (L) (p = 0.050). After 6 months of practicing yoga we found higher FEF 50 (L/s) (p = 0.003), FEF 50% (L/s) (p = 0.003) in women’s group and VCMAX (%) (p = 0.028) in men’s group. We also found a tendency of the increase of VCMAX (L) (p = 0.053), PIF (L/s) (p = 0.051), FVC IN (L) (p = 0.061), FIVI (L)  (p = 0.064) indexes in men and PIF (L/s) (p = 0.072), FVC IN (L) (p =  0.076) in women.Discussion and conclusions. Yoga practice appeared to have minor influence on respiratory function at rest in men and women of middle age. Additional studies examining various yoga practices are warranted to gain a more comprehensive understanding of the effects of yoga techniques on pulmonary functions.Keywords: pulmonary function at rest, yoga training, yoga breathing.

scholarly journals Neck Stabilization Exercises Enhance Respiratory Function after Stroke: Respiratory Function Index Change Trajectory Analyzed Using a Hierarchical Linear Model

Medicina ◽  
2021 ◽  
Vol 57 (12) ◽  
pp. 1312
Author(s):  
So-Hyun Kim ◽  
Sung-Hyoun Cho
Keyword(s):  
Growth Rate ◽  
Linear Model ◽  
Respiratory Function ◽  
Hierarchical Linear Model ◽  
Forced Expiratory Volume ◽  
Forced Expiration ◽  
Stroke Patients ◽  
Mean Values ◽  
Intergroup Comparison ◽  
Neck Stabilization

Background and Objectives: This study aimed to assess the effect of neck stabilization exercise on respiratory function in stroke patients through longitudinal observation and determine whether there is a difference in its effect based on the side of paralysis in the patients. It is difficult to observe the amount of change observed in individuals and groups as most intergroup comparison studies only use mean values. To address these shortcomings, this study adopted a hierarchical linear model (HLM) in our trajectory analysis. Materials and Methods: We conducted neck stabilization training three times a week for four weeks in a single group of 21 stroke patients. To evaluate respiratory function, their forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), forced expiration ratio (FEV1/FVC), and peak cough flow (PCF) were measured. Data analysis was performed using HLM 8.0. Results: A significant increase was found in the respiratory function after neck stabilization training (p < 0.05). While neck stabilization training overall was longitudinally effective, the growth rate of respiratory function in left-sided paralytic patients was less than the whole group value. Conversely, the growth rate of respiratory function in right-sided paralytic patients was greater than the whole group value. Conclusions: This study demonstrated that neck stabilization training is longitudinally effective in improving respiratory function in stroke patients. Additionally, the growth rate of respiratory function was greater in patients with right side paralysis than in patients with left side paralysis.

scholarly journals Relationship of Red Cell Index with the Severity of COPD

2020 ◽  
Author(s):  
Yiben Huang ◽  
Jianing Wang ◽  
Jiamin Shen ◽  
Keke Ding ◽  
Honghao Huang ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Respiratory Function ◽  
Chronic Obstructive ◽  
Forced Expiration ◽  
Red Cell ◽  
Lymphocyte Ratio ◽  
Cell Index ◽  
Copd Patients

Abstract Background: Chronic obstructive pulmonary disease (COPD) has always attracted attention due to its high prevalence and high mortality. How to predict and diagnose COPD and assess the severity of the disease is our top priority. We aimed to evaluate the association between red cell index (RCI) and the severity of COPD, and compare predictive value among RCI, neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) of indicating the severity of COPD.Methods: A total of 207 participants were recruited (100 COPD patients and 107 healthy controls). COPD patients were divided into two groups according to receiver operating characteristics (ROC) curves cut-off value of RCI (RCI < 1.75, n = 54; RCI > 1.75, n = 46). Pearson’s correlation test, logistic regression analysis and other tests were performed.Results: Compared with low RCI group, the forced expiration volume in 1 second (FEV1) and FEV1 in percent of the predicted value (FEV1%) of high RCI group decreased (p = 0.016, p = 0.001). There is a negative correlation between RCI and FEV1% (r = -0.302, p = 0.004), while no correlation between FEV1% and NLR and PLR. RCI’s ability to predict Global Initiative for Chronic Obstructive Lung Disease classification, is better than NLR and PLR, with a cut of 1.75, specificity of 85.2%, sensitivity of 57.6% and area under the curve (AUC) of 0.729 (p = 0.001). Multivariate logistic regression analysis proved RCI was an independent factor affecting lung function in COPD patients (odds ratio [OR] = 4.27, 95%CI: 1.57 - 11.63, p = 0.004). Conclusion: RCI is a novel biomarker that can better assess respiratory function and severity of COPD than NLR and PLR. Higher RCI is independently related to deterioration of respiratory function.

Factors influencing glottic dimensions during forced expiration

1983 ◽  
Vol 55 (6) ◽  
pp. 1825-1829 ◽  
Author(s):  
T. Brancatisano ◽  
D. Dodd ◽  
L. A. Engel
Keyword(s):  
Normal Subjects ◽  
Positive Pressure ◽  
Forced Expiration ◽  
Tidal Breathing ◽  
Pressure Transients ◽  
Mouth Pressure ◽  
Expiratory Muscles ◽  
Expiratory Flow ◽  
Active Flow ◽  
The Relationship

To examine the relationship between expiratory effort, expiratory flow, and glottic aperture, we compared the effects of actively and passively produced changes in flow in six normal subjects. During flow transients of 1.08 +/- 0.08 l/s produced by voluntary expiratory effort, glottic width (dg) increased by 54 +/- 13% (mean +/- SE). In contrast transient increases in expiratory flow, produced passively by chest compression, were not accompanied by increases in glottic dimensions. Similarly, when subjects expired through a resistance, transient passive increases in mouth pressure of 8.1 +/- 0.8 cmH2O failed to increase glottic width. However, when similar positive-pressure transients were produced actively, dg increased by 97 +/- 36% even though the expiratory efforts were accompanied by relatively small increases in flow (0.20 +/- 0.05 l/s). During tidal breathing glottic widening commenced 160 +/- 60 ms before the onset of inspiratory flow, whereas the widening associated with active flow and pressure transients did not measurably precede the onset of the change in flow or pressure. Our results indicate that transient expulsive efforts are associated with synchronous increases in dg, regardless of whether expiratory flow increases. The findings are most readily explained by a centrally determined synchronous recruitment of intrinsic laryngeal and expiratory muscles that facilitates lung emptying by minimizing airway resistance during forced exhalation.

Peak expiratory flow rate and thoracic mobility in people with fibromyalgia. A cross sectional study

2019 ◽  
Vol 19 (4) ◽  
pp. 755-763
Author(s):  
Kent Jonsson ◽  
Magnus Peterson
Keyword(s):  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Respiratory Function ◽  
Spinal Mobility ◽  
Forced Expiration ◽  
Healthy Controls ◽  
Cross Sectional ◽  
Chest Expansion ◽  
Expiratory Flow

Abstract Background and aims Fibromyalgia (FM) is characterized by chronic widespread pain and affects approximately 1–3% of the general population. Respiratory function has not been given much consideration in people with FM. Few studies have been published concerning FM and respiratory function and conflicting data still exist. The aim of this study was to compare differences in forced expiration, but also to investigate chest expansion, spinal mobility and segmental pain intensity between a group with fibromyalgia and healthy controls. Methods Forty-one women with diagnosed FM based on American College of Rheumatology 1990 criteria and forty-one controls without pain matched for age and gender participated in this cross-sectional study. For evaluation of forced expiration, a Wright peak expiratory flow rate meter was used. A tape measure was used to measure the mobility of the thorax at maximum inhalation and exhalation known as chest expansion. Spinal mobility was measured with the Cervico-thoracic ratio method. The spinal mobility was measured as range of motion from C7 to 15 cm below in flexion and manual palpation was conducted between C7-T5. For differences in pain intensity a palpation-index was defined for each level, respectively; C7-T1, T1-2, T2-3, T3-4 and T4-5 by calculating the mean value for the four different palpation points for each motion segment. A combined measure of expiration and thoracic mobility (expiratory/inspiratory ratio) was calculated by dividing peak expiratory flow rate (L/min) with chest expansion (cm). Statistical analyses included descriptive statistics to describe subjects and controls, means and standard deviation to compare differences between groups and student-t and Chi-square (χ2) tests, using SPSS 22 software. Confidence interval was set to 95%. Results In the FM group 17 had the diagnosis for more than 5 years and 24 less than 5 years. The FM group demonstrated significantly lower forced expiration (p < 0.018), less thoracic expansion (p < 0.001), reduced spinal mobility (p < 0.029), higher expiratory-inspiratory ratio value (p < 0.001) and increased palpation pain over C7-T5 (p < 0.001) compared to healthy controls. There were more smokers in the FM group (n = 9) compared to the controls (n = 5) though this difference was not statistically significant (p < 0.24) and excluding the few smokers yielded similar result. No significant correlations for manual palpation, chest expansion, peak expiratory flow rate and spinal mobility were found in the FM group. Conclusions Women with FM demonstrated significantly lower forced expiration and thoracic mobility compared to healthy controls. Implications The results of this study point to a plausible restriction of respiratory function which in turn may have effect on physical endurance and work capacity in people with FM.

scholarly journals Evaluation Criteria for the Respiratory Function of the Divers

2017 ◽  
Vol 22 (3) ◽  
pp. 198-206
Author(s):  
Tamara Stanciu ◽  
Cecilia Adumitresi
Keyword(s):  
Respiratory Function ◽  
Selection Process ◽  
Pulmonary Ventilation ◽  
Evaluation Criteria ◽  
Forced Expiratory Volume ◽  
Forced Expiration ◽  
Respiratory Flow ◽  
Method Of Evaluation ◽  
Pulmonary Volumes ◽  
Hyperbaric Conditions

Abstract The respiratory effort in hyperbaric conditions is of particular nature, leading to an increase of the respiratory flow of the diver and to the change of their pulmonary volumes. There are important criteria in the selection process of the most suitable divers. Some of these criteria are related to the respiratory function. In order to evaluate the divers respiratory function an examination of the pulmonary volumes is performed in regards to their variations measured by spirometry, of the increased oxygen consumption in hyperbaric conditions and of the production of carbon dioxide during the unitary dive at the depth of work using air as a respiratory mixture. The physical and physiological phenomena involved in the hyperbaric respiration have been studied in cooperation with “Ovidius” University of Constanta, Faculty of Medicine. A specific medical method of evaluation of the pulmonary ventilation, spirometry, the measurement of forced expiratory volume in the first second of a forced expiration, Tiffneau index, have been adapted to the under pressure breathing environment. The parameters have been studied as experimental determinations on diver groups, during simulated diving, using air as a respiratory mixture, at 50 [mH2O] in the Hyperbaric Complex of the Diving Centre

Ventilometry: a new assessment of respiratory function based on tidal breathing

2019 ◽  
Author(s):  
Patrick Hanusse ◽  
Pierantonio Laveneziana ◽  
Pierantonio Laveneziana ◽  
Christian Straus ◽  
Pierre-Olivier Girodet ◽  
...  
Keyword(s):  
Respiratory Function ◽  
Tidal Breathing

scholarly journals Pulmonary hypertension and respiratory function in parenchyma sparing surgical treatment of lung cancer

2018 ◽  
Vol 99 (6) ◽  
pp. 876-879
Author(s):  
A A Kirshin ◽  
V M Napol'skikh
Keyword(s):  
Lung Cancer ◽  
Pulmonary Hypertension ◽  
Respiratory Function ◽  
Negative Relationship ◽  
Lung Cancer Surgery ◽  
Forced Expiration ◽  
Pulmonary System ◽  
The Difference ◽  
One Year ◽  
Parenchyma Sparing

Aim. To assess the effect of pulmonary hypertension on respiratory function in lung cancer surgery. Methods. 92 patients diagnosed with non-small cell lung cancer, among them 69 men (75 %) and 23 women (25 %), were operated on with different variants of angioplastic lobectomy (APL), the average age was 57.8 ± 6.7 years. 91 patients underwent pulmonectomy (PE), among them 87 men (95.6 %) and 4 women (4.4 %), the average age was 59 ± 8.8 years. Results. One year after angioplastic lobectomy FEV1 decreased by 0.69 liters (27 %), vital capacity decreased by 1.17 liters (32.9 %), FVC (the difference between the volumes of lungs at the beginning and at the end of forced expiration) reduced by 0.64 liters (20.5 %). After removal of the lung, dynamics of the decrease of similar indicators was 1.02 (42 %); 1.53 (43.8 %); 1.24 (40.3 %) liter respectively. The presence of a negative relationship between PA/A (pulmonary artery/aorta) and FEV1 was revealed. Thus, in the group of angioplastic lobectomy without initial pulmonary hypertension (PA/A less than 1) it was found that r = -0.42 (p < 0.01), with pulmonary hypertension (PA/A 1 or more) r = -0.4 (p < 0.01). In the group of pulmonectomy without initial pulmonary hypertension, the correlation index was -0.38 (p < 0.01), with initial pulmonary hypertension r = -0.33 (p < 0.01). Conclusion. The analysis of the functional parameters of pulmonary system after the surgery revealed statistically significant advantage of organ-saving treatment, as well as negative correlation between pulmonary hypertension and respiratory function.

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