The Relationship between Muscular Endurance of Respiratory Muscles and Slow Vital Capacity

2020 ◽  
Vol 8 (1) ◽  
pp. 1-5
Author(s):  
Dong-Wook Han
Keyword(s):  
Vital Capacity ◽  
Respiratory Muscles ◽  
Muscular Endurance ◽  
The Relationship

scholarly journals Effect of respiratory muscle training on pulmonary function in preoperative preparation of tobacco smokers

2007 ◽  
Vol 22 (2) ◽  
pp. 98-104 ◽  
Author(s):  
Carrie Chueiri Ramos Galvan ◽  
Antônio José Maria Cataneo
Keyword(s):  
Pulmonary Function ◽  
Respiratory Muscle ◽  
Vital Capacity ◽  
Peak Flow ◽  
Respiratory Muscles ◽  
Forced Expiratory Volume ◽  
Respiratory Muscle Training ◽  
Specific Training ◽  
Muscle Training ◽  
Respiratory Exercises

PURPOSE: To evaluate the effect of utilization of a specific training program of respiratory muscles on pulmonary function in tobacco smokers. METHODS: Fifty asymptomatic tobacco smokers with age superior to 30 years were studied, at the moments: A0 - initial evaluation followed by protocol of respiratory exercises; A1 - reevaluation after 10 minutes of protocol application; and A2 - final reevaluation after 2 weeks of training utilizing the same protocol 3 times per week. The evaluation was realized through measures of maximum respiratory pressures (PImax and PEmax), respiratory peak flow (IPF and EPF), maximum voluntary ventilation (MVV), forced vital capacity (FVC) and forced expiratory volume at the 1st second (FEV1). RESULTS: There was no improvement from initial to final evaluation in FVC and FEV1. But there were significant increases in the variables IPF, EPF, MVV and PImax at evaluations A1 and A2. The PEmax variable increased only at evaluation A2. CONCLUSION: The application of the protocol of respiratory exercises with and without additional load in tobacco smokers produced immediate improvement in the performance of respiratory muscles, but this gain was more accentuated after 2 weeks of exercise.

Respiratory movements of the vocal cords

1983 ◽  
Vol 54 (5) ◽  
pp. 1269-1276 ◽  
Author(s):  
T. Brancatisano ◽  
P. W. Collett ◽  
L. A. Engel
Keyword(s):  
Lung Volume ◽  
Respiratory Control ◽  
Respiratory Muscles ◽  
Normal Subjects ◽  
Tight Coupling ◽  
Tidal Breathing ◽  
Vocal Cords ◽  
Residual Capacity ◽  
The Relationship ◽  
Respiratory Movements

We examined the movements of the vocal cords during tidal breathing, panting, and large changes in lung volume in 12 normal subjects. The glottis was observed with a fiber-optic bronchoscope, and the glottic image was recorded together with flow, volume, and a time marker onto videotape. Phasic respiratory swings in glottic width (dg) and glottic area (Ag) were reproducible in all subjects but differed substantially between subjects. In the group as a whole dg and Ag increased during inspiration to 10.1 +/- 5.6 mm and 126 +/- 8 mm2 (mean +/- SE), respectively, whereas during expiration the lowest values were 5.7 +/- 0.5 mm and 70 +/- 7 mm2, respectively. These extreme dimensions corresponded closely to the midtidal volume points in the respiratory cycle. Glottic width during vital capacity (VC) expirations was nearly 30% greater at a flow of 1.2 l/s than at 0.5 l/s, but the relationship between dg and lung volume differed between subjects. When swings in dg were minimized by panting, there was no difference in dg between functional residual capacity (FRC) and a volume corresponding to midinspiratory capacity. However, tidal breathing at this lung volume was associated with a 20% decrease in dg compared with breathing at FRC. Our observations indicate a tight coupling between the pattern of glottic movement and the respiratory volume cycle. The results suggest that during voluntary respiratory maneuvers both intrinsic laryngeal and respiratory muscles are recruited, participating as effector organs in ventilatory and respiratory control.

scholarly journals Features of glossopharyngeal breathing in breath-hold divers

2006 ◽  
Vol 101 (3) ◽  
pp. 799-801 ◽  
Author(s):  
Leigh M. Seccombe ◽  
Peter G. Rogers ◽  
Nghi Mai ◽  
Chris K. Wong ◽  
Leonard Kritharides ◽  
...  
Keyword(s):  
Vital Capacity ◽  
Total Lung Capacity ◽  
Breath Hold ◽  
Lung Capacity ◽  
Diving Depth ◽  
Highly Correlated ◽  
Pressure Changes ◽  
Air Compression ◽  
The Relationship ◽  
Measured Volume

One technique employed by competitive breath-hold divers to increase diving depth is to hyperinflate the lungs with glossopharyngeal breathing (GPB). Our aim was to assess the relationship between measured volume and pressure changes due to GPB. Seven healthy male breath-hold divers, age 33 ( 8 ) [mean (SD)] years were recruited. Subjects performed baseline body plethysmography (TLCPRE). Plethysmography and mouth relaxation pressure were recorded immediately following a maximal GPB maneuver at total lung capacity (TLC) (TLCGPB) and within 5 min after the final GPB maneuver (TLCPOST). Mean TLC increased from TLCPRE to TLCGPB by 1.95 (0.66) liters and vital capacity (VC) by 1.92 (0.56) liters ( P < 0.0001), with no change in residual volume. There was an increase in TLCPOST compared with TLCPRE of 0.16 liters (0.14) ( P < 0.02). Mean mouth relaxation pressure at TLCGPB was 65 (19) cmH2O and was highly correlated with the percent increase in TLC ( R = 0.96). Breath-hold divers achieve substantial increases in measured lung volumes using GPB primarily from increasing VC. Approximately one-third of the additional air was accommodated by air compression.

Diaphragmatic fatigue in man

1977 ◽  
Vol 43 (2) ◽  
pp. 189-197 ◽  
Author(s):  
C. S. Roussos ◽  
P. T. Macklem
Keyword(s):  
Energy Consumption ◽  
Lung Diseases ◽  
Respiratory Muscles ◽  
Transdiaphragmatic Pressure ◽  
Diaphragmatic Fatigue ◽  
Residual Capacity ◽  
The Subject ◽  
Time Required ◽  
The Relationship ◽  
Experimental Runs

The time required (tlim) to produce fatigue of the diaphragm was determined in three normal seated subjects, breathing through a variety of high alinear, inspiratory resistances. During each breath in all experimental runs the subject generated a transdiaphragmatic pressure (Pdi) which was a predetermined fraction of his maximum inspiratory Pdi (Pdimax) at functional residual capacity. The breathing test was performed until the subject was unable to generate this Pdi. The relationship between Pdi/Pdimax and tlim was curvilinear so that when Pdi/Pdimax was small tlim increased markedly for little changes in Pdi/Pdimax. The value of Pdi/Pdimax that could be generated indefinitely (Pdicrit) was around 0.4. Hypoxia appeared to have no influence on Pdicrit, but probably led to a reduction in tlim at Pdi greater than Pdicrit for equal rates of energy consumption. Insofar as the behavior of the diaphragm reflects that of other respiratory muscles it appears that quite high inspiratory loads can be tolerated indefinitely. However, when the energy consumption of the respiratory muscles exceeds a critical level, fatigue should develop. This may be a mechanism of respiratory failure in a variety in a variety of lung diseases.

scholarly journals The relationship of physical fitness and motor competence with behavioral and neuroelectric indices of attention in preschool children

2021 ◽  
Author(s):  
SHIH-CHUN KAO ◽  
Yu-Jung Tsaii ◽  
Sara Schmitt ◽  
Tsung-Min Hung
Keyword(s):  
Preschool Children ◽  
Physical Fitness ◽  
Response Selection ◽  
Muscular Endurance ◽  
Motor Competence ◽  
Controlled Attention ◽  
Competence Test ◽  
Relationship Of ◽  
The Relationship ◽  
Electroencephalogram Eeg

The present study examined the associations of physical fitness and motorcompetence with P3 and alpha desynchronization (ERD), two neuroelectric indices ofbrain development underlying controlled attention, in 4-6 year-old preschool children. Allparticipants completed physical fitness and motor competence test batteries and anauditory oddball task while electroencephalogram (EEG) was recorded. Resultsrevealed that increased muscular power, muscular endurance, physical fitness, andmotor competence were associated better attentional task performance. Analysis onneuroelectric indices showed that muscular endurance was related to increased P3amplitude, while the increases in physical fitness and motor competence wereassociated with greater upper alpha (10-12 Hz) ERD following the stimulus evaluationand response selection. Further, the negative associations of physical fitness and motorcompetence with task response time were mediated by the upper alpha ERD. Thesefindings highlight the importance of early childhood motor competence and physicalfitness, especially muscular endurance, to neurocognitive function.

scholarly journals Relationship of Scoliosis with Pain and Respiratory Dysfunction in Patients with Duchenne Muscular Dystrophy

2019 ◽  
Vol 18 (04) ◽  
pp. 185-189
Author(s):  
Filiz Meryem Sertpoyraz ◽  
Bedile Irem Tiftikcioglu ◽  
Figen Baydan ◽  
Bakiye Tuncay ◽  
Nihan Erdinc Gunduz ◽  
...  
Keyword(s):  
Muscular Dystrophy ◽  
Vital Capacity ◽  
Respiratory Dysfunction ◽  
Daily Care ◽  
Duchene Muscular Dystrophy ◽  
Prevalence Of Pain ◽  
Demographical Data ◽  
Relationship Of ◽  
The Relationship

Abstract Introduction Scoliosis is one of the major causes of respiratory dysfunction in patients with Duchene muscular dystrophy (DMD). Also, progressive spinal deformity severely affects walking and sitting, and can also lead to pain and difficulty in patient care. Although the relationship between scoliosis and respiratory functions was extensively studied, its impact on pain has not been examined. Hereby, we aimed to evaluate the relationship between scoliosis and respiratory dysfunction and pain, together with the frequency of scoliosis in Turkish DMD patients. Materials and Methods The demographical data, rate, and region of scoliosis, pain, and respiratory functions were evaluated in 69 male DMD patients. The severity of pain was evaluated with a visual analog scale (VAS) and the degree of scoliosis was assessed with Cobb angle. Forced vital capacity was used to grade the pulmonary functions. Results Scoliosis was present in 52.2% of the patients, mainly in the dorsolumbar region. Pain was present in 53.6% of the patients, most commonly in the back and lumbar regions. The rate of pulmonary dysfunction was 49.3%. Of the 36 patients with scoliosis, prevalences of pain and respiratory dysfunction were 77.7 and 50.0%, respectively. Scoliosis was significantly associated with pain and respiratory dysfunction, as expected. Conclusion The prevalence of pain and respiratory dysfunction is considerably high in DMD patients with scoliosis. These patients should be closely monitored for pain and deterioration in respiratory functions, to ease their daily care, increase their quality of life, and preserve the functionality, as long as possible.

Total and local impedances of the chest wall up to 10 Hz

1990 ◽  
Vol 68 (4) ◽  
pp. 1409-1414 ◽  
Author(s):  
G. M. Barnas ◽  
K. Yoshino ◽  
J. Fredberg ◽  
Y. Kikuchi ◽  
S. H. Loring ◽  
...  
Keyword(s):  
Chest Wall ◽  
Healthy Subjects ◽  
Vital Capacity ◽  
Respiratory Muscles ◽  
Volume Changes ◽  
Impedance Measurements ◽  
Rib Cage ◽  
Gastric Pressure ◽  
Local Properties ◽  
Diameter Change

To understand how bical mechanical chest wall (CW) properties are related to those of the CW as a whole, we measured esophageal and gastric pressures, CW volume changes (measured with a head-out body plethysmograph), and anteroposterior and transverse CW diameter changes (measured with magnetometers attached to the surface) during sinusoidal forcing at the mouth (2.5% vital capacity, 0.5-10 Hz) in four healthy subjects. Total CW resistance decreased sharply as frequency rose to 3-4 Hz and remained relatively constant at higher frequencies. Total CW reactance became less negative with increasing frequency but showed no tendency to change sign. Above 2 Hz, diameters measured at different locations changed asynchronously between and within the rib cage and abdomen. “Local pathway impedances” (ratios of esophageal or gastric pressure to a rate of diameter change) showed frequency dependence similar to that of the total CW less than 3 Hz. Local pathway impedances increased during contraction of respiratory muscles acting on the pathway. We conclude that 1) total CW behavior is mainly a reflection of its individual local properties at less than or equal to 3 Hz, 2) local impedances within the rib cage or within the abdomen can change independently in some situations, and 3) asynchronies that develop within the CW during forcing greater than 3 Hz suggest that two compartments may be insufficient to describe CW properties from impedance measurements.

Static features of the passive rib cage and abdomen-diaphragm

1965 ◽  
Vol 20 (6) ◽  
pp. 1187-1193 ◽  
Author(s):  
Emilio Agostoni ◽  
Piero Mognoni ◽  
Giorgio Torri ◽  
Ada Ferrario Agostoni
Keyword(s):  
Chest Wall ◽  
Lung Volume ◽  
Vital Capacity ◽  
Small Volume ◽  
Respiratory Muscles ◽  
Muscular Activity ◽  
Pressure Curve ◽  
Rib Cage ◽  
Expiratory Muscles ◽  
Volume Pressure Curves

The static relation between lung volume and rib cage circumference has been determined over the vital capacity range, during relaxation and activity of the respiratory muscles with open airway. At small volume the circumference is larger during relaxation; the reverse occurs at large volume. During relaxation at full expiration the cross section of the rib cage becomes more elliptical and in some subjects also greater. Hence the shape of the chest wall during muscular activity is different from that during relaxation. Because of this change of chest wall shape the outward recoil of the passive rib cage at full expiration, in the seven subjects examined, is higher than that given by the conventional volume-pressure curve during relaxation. The volume displacements of the rib cage and of the abdomen-diaphragm have been calculated and the volume-pressure curves of the passive rib cage and abdomen-diaphragm have been constructed, taking into account the changes of the chest wall shape occurring during relaxation. change of chest wall shape during relaxation; relation between lung volume and rib cage circumference during relaxation; relation between pleural pressure and rib cage circumference during relaxation; recoil of the passive rib cage; pressure exerted by the expiratory muscles at full expiration; volume-pressure curve of the passive rib cage; volume-pressure curve of the passive abdomen-diaphragm Submitted on September 14, 1964

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