Effects of Hypopressive Exercise on Posterior Back Chain Kinematics and Pulmonary Function in Professional Female Basketball Players

Context: Hypopressive exercise (HE) has been used as an alternative lumbo-pelvic injury prevention program and claimed to be a means of respiratory and flexibility improvement. However, the possible effects of HE on athletic populations and physical performance remain unclear. Objective: Examine the effects of a HE program on posterior back chain kinematics, thoracic mobility, pulmonary function, and lower lumbar pain in female basketball players over an 8-week training period. Design: Prospective (1) baseline, (2) midpoint (4 wk), and (3) after 8 weeks. Setting: Sports field. Participants: A total of 17 professional female basketball players (mean age 20.7 y, SD: 3.50; body mass index, 21.71, SD: 1.69). Intervention: Participants performed 8 HE weekly sessions of 30 minutes. Main Outcome Measures: Back chain kinematics was assessed with the sit and reach and finger to floor test, and back pain was assessed through numerical rating scale. Respiratory parameters were assessed by spirometry and through thoracic mobility. Results: The analysis of variance revealed significant differences between the 3 measurement periods for thoracic mobility (P > .01); forced expiratory volume in the first second (P < .05) while no statistical differences were found for the rest of spirometry outcomes. Significant differences were also revealed between baseline and after the intervention for the sit and reach test (P > .01), peak expiratory flow (P = .01), and forced expiratory volume in the first 25 seconds (P = .04). Also, significant differences between weeks were found in levels of lumbar pain (P = .003) and the finger to floor test (P = .002). Conclusions: These preliminary findings suggest that a HE program can improve posterior back chain and chest wall kinematics as well as lower lumbar pain levels. However, no gains seem to be observed for the majority of pulmonary variables except for peak expiratory flow and forced expiratory volume in the first seconds.

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In-brace alterations of pulmonary functions in adolescents wearing a brace for idiopathic scoliosis

Prosthetics and Orthotics International ◽

10.1177/0309364619839856 ◽

2019 ◽

Vol 43 (4) ◽

pp. 434-439 ◽

Cited By ~ 3

Author(s):

Gozde Yagci ◽

Gokhan Demirkiran ◽

Yavuz Yakut

Keyword(s):

Idiopathic Scoliosis ◽

Pulmonary Function ◽

Peak Expiratory Flow ◽

Forced Vital Capacity ◽

Respiratory Muscle ◽

Vital Capacity ◽

Forced Expiratory Volume ◽

Pulmonary Functions ◽

Significant Difference ◽

Expiratory Flow

Background:Despite the common use of braces to prevent curve progression in idiopathic scoliosis, their functional effects on respiratory mechanics have not been widely studied.Objective:The objective was to determine the effects of bracing on pulmonary function in idiopathic scoliosis.Methods:A total of 27 adolescents with a mean age of 14.5 ± 1.5 years and idiopathic scoliosis were included in the study. Pulmonary function evaluation included vital capacity, forced expiratory volume, forced vital capacity, maximum ventilator volume, peak expiratory flow, and respiratory muscle strengths, measured with a spirometer, and patient-reported degree of dyspnea. The tests were performed once prior to bracing and at 1 month after bracing (while the patients wore the brace).Results:Compared with the unbraced condition, vital capacity, forced expiratory volume, forced vital capacity, maximum ventilator volume, and peak expiratory flow values decreased and dyspnea increased in the braced condition. Respiratory muscle strength was under the norm in both unbraced and braced conditions, while no significant difference was found for these parameters between the two conditions.Conclusion:The spinal brace for idiopathic scoliosis tended to reduce pulmonary functions and increase dyspnea symptoms (when wearing a brace) in this study. Special attention should be paid in-brace effects on pulmonary functions in idiopathic scoliosis.Clinical relevanceBracing seems to mimic restrictive pulmonary disease, although there is no actual disease when the brace is removed. This study suggests that bracing may result in a deterioration of pulmonary function when adolescents with idiopathic scoliosis are wearing a brace.

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Detection of Circadian Variation in Pulmonary Function Using peak Expiratory Flow and Forced Expiratory Volume Measurements

Physiotherapy ◽

10.1016/s0031-9406(10)62715-0 ◽

1989 ◽

Vol 75 (2) ◽

pp. 85

Author(s):

Ann Taylor

Keyword(s):

Pulmonary Function ◽

Peak Expiratory Flow ◽

Circadian Variation ◽

Forced Expiratory Volume ◽

Volume Measurements ◽

Expiratory Flow

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Effectiveness of septoplasty on pulmonary function tests in symptomatic deviated nasal septum cases: a prospective study

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20181875 ◽

2018 ◽

Vol 4 (3) ◽

pp. 800 ◽

Cited By ~ 1

Author(s):

Vidya Bhargavan Panicker ◽

B.P. Belaldavar

Keyword(s):

Pulmonary Function ◽

Peak Expiratory Flow ◽

Nasal Septum ◽

Pulmonary Function Tests ◽

Demographic Data ◽

Forced Expiratory Volume ◽

Deviated Nasal Septum ◽

Pulmonary Functions ◽

Function Tests ◽

Expiratory Flow

Background: Deviation of normal pulmonary functions leads to dysfunction of the respiratory system and this affects the functions and vitality of other related systems. Pulmonary function tests give valuable information on the state of airways, lung volumes and lung function. Hence, the present study aimed to evaluate the effectiveness of septoplasty on pulmonary function tests in symptomatic deviated nasal septum cases.Methods: A total of 35 patients (septoplasty: 31; septorhinoplasty: 4) with deviated nasal septum were involved in the study. Demographic data, clinical and physical examination including anterior and posterior rhinoscopy was performed. RMS Helios 702 spirometer was used to perform pre- and postoperative pulmonary function tests. Forced vital capacity (FVC), forced expiratory volume (FEV1) in 1 second, peak expiratory flow rate, and the ratio of FEV1 to FVC were the parameters measured. SPSSV. 17 was used to analyse the data. Results: The deviation was most commonly seen on the left side (54%), affecting mostly the cartilaginous septum (54%). Among patients with septoplasty, the postoperative values of FVC (p<0.05), FEV1 (p<0.05), and peak expiratory flow (p<0.05) were higher than the preoperative values and the results were statistically significant. Age, gender, laterality and duration of deviation, headache and inferior turbinate hypertrophy did not play a significant role in the enhancement of pulmonary functions after septoplasty.Conclusions: A favorable outcome in pulmonary function was observed in patients with deviated nasal septum after septoplasty. However, due to limited sample size, it is advisable to conduct the study in a larger sample to validate these results.

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Validation of a portable game controller to assess peak expiratory flow against conventional spirometry in children: A cross-sectional study (Preprint)

10.2196/preprints.25052 ◽

2020 ◽

Author(s):

Khadidja Chelabi ◽

Fabio Balli ◽

Myriam Bransi ◽

Yannick Gervais ◽

Clement Marthe ◽

...

Keyword(s):

Pulmonary Function ◽

Peak Expiratory Flow ◽

Pulmonary Function Tests ◽

Airflow Obstruction ◽

Forced Expiratory Volume ◽

Cross Sectional ◽

Disease Evolution ◽

Game Controller ◽

Feedback Questionnaire ◽

Expiratory Flow

BACKGROUND International asthma guidelines recommend the monitoring of peak expiratory flow (PEF) as part of asthma self-management in children and adolescents who poorly perceive airflow obstruction, those with a history of severe exacerbations, or have difficult to control asthma. Measured with a peak flow meter, PEF represents a person’s maximum speed of expiration and helps individuals to follow their disease evolution and ultimately to prevent asthma exacerbations. However, adherence to this practice is poor, particularly in the pediatric population. To address this, we developed an interactive serious game consisting of a portable game controller that can transduce a signal from the breath to generate a PEF value when coupled with a tablet-based game. OBJECTIVE We evaluated the concordance between PEF values obtained with the game controller (PEFGC) and various measures derived from conventional pulmonary function tests (i.e spirometry) and we synthesized the participants’ feedback. METHODS In this cross-sectional multicenter study, 158 children aged 8-15 years old with a diagnosis or suspicion of asthma performed spirometry and played with the game in one of 2 hospital university centers. We evaluated the correlation between PEFGC and spirometry measurements, including PEF values (PEFspiro), forced expiratory volume in 1 second (FEV1) and forced expiratory volume at 25-75% of pulmonary volume (FEF25-75), using Spearman correlation. A Bland-Altman plot was generated for comparison of PEFGC against PEFspiro. A post-game user feedback questionnaire was administered and analyzed. RESULTS The participants had a mean age (SD) of 10.9 2.5) years, 44% were female, and 88.6% Caucasians. On average, their pulmonary function were normal, including FEV1, PEF and FEV1/FVC. The PEFGC was reproducible in 96.2% of participants according to standardized criteria. The PEFGC presented a good correlation with PEFspiro (r=0.83, p<0.001), with FEV1 (r=0.74, p<0.001) and with FEF25-75 (r=0.65, p<0.001). The PEFGC presented an expected mean bias of -36.4 L/min as compared to PEFspiro. The participants’ feedback was strongly positive with 78.4% reporting they would use the game if they had it at home. CONCLUSIONS The game controller developed is an interactive tool appreciated by children with asthma and whose values are reproducible with a good correlation when compared to conventional spirometry. Future studies are necessary to evaluate the clinical impact this novel tool might have on asthma management and its potential use in an out-of-hospital setting. CLINICALTRIAL

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Anaesthetic and respiratory equipment. Peak expiratory flow meters for the assessment of pulmonary function in spontaneously breathing humans

10.3403/30292012 ◽

2015 ◽

Keyword(s):

Pulmonary Function ◽

Peak Expiratory Flow ◽

Flow Meters ◽

Expiratory Flow ◽

Spontaneously Breathing

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Pulmonary function in men after oxygen breathing at 3.0 ATA for 3.5 h

Journal of Applied Physiology ◽

10.1152/jappl.1991.71.3.878 ◽

1991 ◽

Vol 71 (3) ◽

pp. 878-885 ◽

Cited By ~ 24

Author(s):

J. M. Clark ◽

R. M. Jackson ◽

C. J. Lambertsen ◽

R. Gelfand ◽

W. D. Hiller ◽

...

Keyword(s):

Pulmonary Function ◽

Forced Vital Capacity ◽

Vital Capacity ◽

Large Change ◽

Forced Expiratory Volume ◽

Diffusing Capacity ◽

Mild Degree ◽

Oxygen Breathing ◽

Multiple Organs ◽

Expiratory Flow

As a pulmonary component of Predictive Studies V, designed to determine O2 tolerance of multiple organs and systems in humans at 3.0–1.5 ATA, pulmonary function was evaluated at 1.0 ATA in 13 healthy men before and after O2 exposure at 3.0 ATA for 3.5 h. Measurements included flow-volume loops, spirometry, and airway resistance (Raw) (n = 12); CO diffusing capacity (n = 11); closing volumes (n = 6); and air vs. HeO2 forced vital capacity maneuvers (n = 5). Chest discomfort, cough, and dyspnea were experienced during exposure in mild degree by most subjects. Mean forced expiratory volume in 1 s (FEV1) and forced expiratory flow at 25–75% of vital capacity (FEF25–75) were significantly reduced postexposure by 5.9 and 11.8%, respectively, whereas forced vital capacity was not significantly changed. The average difference in maximum midexpiratory flow rates at 50% vital capacity on air and HeO2 was significantly reduced postexposure by 18%. Raw and CO diffusing capacity were not changed postexposure. The relatively large change in FEF25–75 compared with FEV1, the reduction in density dependence of flow, and the normal Raw postexposure are all consistent with flow limitation in peripheral airways as a major cause of the observed reduction in expiratory flow. Postexposure pulmonary function changes in one subject who convulsed at 3.0 h of exposure are compared with corresponding average changes in 12 subjects who did not convulse.

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Exoskeleton-assisted walking improves pulmonary function and walking parameters among individuals with spinal cord injury: a randomized controlled pilot study

10.21203/rs.3.rs-158028/v1 ◽

2021 ◽

Author(s):

Xiao-na Xiang ◽

Hui-yan Zong ◽

Yi Ou ◽

Xi Yu ◽

Hong Cheng ◽

...

Keyword(s):

Spinal Cord ◽

Spinal Cord Injury ◽

Pilot Study ◽

Pulmonary Function ◽

Forced Expiratory Volume ◽

Conventional Group ◽

Clinical Trial Registry ◽

Randomized Controlled ◽

Cord Injury ◽

Expiratory Flow

Abstract Background: Exoskeleton-assisted walking (EAW) is expected to improve the gait of spinal cord injury (SCI) individuals. However, few studies reported the changes of pulmonary function (PF) parameters after EAW trainings. Hence, we aimed to explore the effect of EAW on PF parameters, 6-minute walk test (6MWT) and lower extremity motor score (LEMS) in individuals with SCI and to compare those with conventional trainings. Methods: In this prospective, single-center, single-blinded randomized controlled pilot study, 18 SCI participants were randomized into the EAW group (n=9) and conventional group (n=9) and received 16 sessions of 50-60min training (4 days/week, 4 weeks). PF parameters consisting of the forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV1), forced expiratory flow (FEF), peak expiratory flow, and maximal voluntary ventilation, 6MWT with assisted devices and LEMS were reported pre- and post-training. Results: Values of FVC (p=0.041), predicted FVC% (p=0.012) and FEV 1 (p=0.013) were significantly greater in EAW group (FVC: 3.8±1.1 L; FVC%pred=94.1±24.5%; FEV1: 3.5±1.0 L) compared to conventional group (FVC: 2.8±0.8 L; FVC%pred=65.4±17.6%; FEV1: 2.4±0.6 L) after training. Participants in EAW group completed 6MWT with median 17.3 meters while wearing the exoskeleton. There was no difference in LEMS and no adverse event. Conclusions: The current results suggest that EAW has potential benefits to facilitate PF parameters among individuals with lower thoracic neurological level of SCI compared to conventional trainings. Additionally, robotic exoskeleton helped walking. Trial registration: Registered on 22 May 2020 at Chinese Clinical Trial Registry (ChiCTR2000033166). http://www.chictr.org.cn/edit.aspx?pid=53920&htm=4 Keywords: Spinal Cord, Pulmonary, Exercise, Exoskeleton, 6MWT, Rehabilitation

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Relationship between spontaneous dyspnoea and lability of airway obstruction in asthma

Clinical Science ◽

10.1042/cs0820717 ◽

1992 ◽

Vol 82 (6) ◽

pp. 717-724 ◽

Cited By ~ 11

Author(s):

C. Peiffer ◽

M. Toumi ◽

H. Razzouk ◽

J. Marsac ◽

A. Lockhart

Keyword(s):

Visual Analogue Scale ◽

Airway Obstruction ◽

Peak Expiratory Flow ◽

Flow Rate ◽

Peak Expiratory Flow Rate ◽

Analogue Scale ◽

Forced Expiratory Volume ◽

Bronchial Responsiveness ◽

Expiratory Flow ◽

The Relationship

1. As marked lability of bronchial obstruction is a risk factor for asthma severity, it may influence dyspnoea, the most common subjective complaint in asthma. We therefore studied the relationship between spontaneous dyspnoea and the degree of bronchial lability, as assessed by the daily variability in peak expiratory flow rate and the bronchial responsiveness to either carbachol or salbutamol, in 33 stable symptomatic asthmatic patients. 2. Three times daily, for 10 consecutive days, the patients rated the intensity of their dyspnoea on a visual analogue scale and immediately afterwards recorded their peak expiratory flow rate. Within the next 5 days, we determined the bronchial response by measuring the forced expiratory volume in 1 s and the specific resistance of airways to either carbachol or salbutamol according to baseline airway obstruction. 3. We characterized dyspnoea for each patient by using two parameters: (1) the relationship with underlying airway obstruction, as assessed by the correlation coefficient r between dyspnoea scores and corresponding values of peak expiratory flow rate (r DSc-PEFR), and (2) the intensity, as assessed by the mean visual analogue scale dyspnoea score adjusted for comparable airway obstruction. Bronchial lability was characterized by (1) variability in mean daily peak expiratory flow rate and (2) bronchial responsiveness to either carbachol (as assessed by the threshold dose and the slope of the dose-response curve) or salbutamol (as assessed by the threshold dose and maximal response). We assessed the relationship between dyspnoea and bronchial lability by correlating each of their respective characteristics. 4. We found large inter-subject differences in both characteristics of dyspnoea, r DSc-PEFR was unrelated to variability in mean daily peak expiratory flow rate and to all characteristics of bronchial responsiveness used, except for maximal salbutamol-induced increase in forced expiratory volume in 1 s (as a percentage of predicted). Adjusted visual analogue scale dyspnoea scores were unrelated to all characteristics of bronchial lability. 5. Our results suggest that spontaneous dyspnoea, as characterized by its intensity at comparable levels of airway obstruction and by its relationship with underlying airway obstruction, is poorly related to the degree of bronchial lability in stable symptomatic asthmatic patients.

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