scholarly journals Influence of Posture on Respiratory Function and Respiratory Muscle Strength in Normal Subjects

2009 ◽  
Vol 21 (1) ◽  
pp. 71-74 ◽  
Author(s):  
Atsuhiro Tsubaki ◽  
Seiki Deguchi ◽  
Yumi Yoneda
2010 ◽  
Vol 56 (2) ◽  
pp. 49-51
Author(s):  
Selda Bağış ◽  
Mukadder Çalıkoğlu ◽  
Melek Sezgin ◽  
Cengiz Özge ◽  
Özlem Bölgen Çimen

Author(s):  
Paltiel Weiner ◽  
Rivka Inzelberg ◽  
Avi Davidovich ◽  
Puiu Nisipeanu ◽  
Rasmi Magadle ◽  
...  

Background:Pulmonary and respiratory muscle function impairment are common in patients with Parkinson's disease (PD). However, dyspnea is not a frequent complaint among these patients, although it is well documented that the intensity of dyspnea is related to the activity and the strength of the respiratory muscles.Patients and Methods:We studied pulmonary function, respiratory muscle strength and endurance and the perception of dyspnea (POD) in 20 patients with PD (stage II and III Hoehn and Yahr scale) before and after their first daily L-dopa dose. Respiratory muscle strength was assessed by measuring the maximal inspiratory and expiratory mouth pressures (PImax and PEmax), at residual volume (RV) and total lung capacity (TLC) respectively. The POD was measured while the subject breathed against progressive load and dyspnea was rated using a visual analog scale.Results:Respiratory muscle strength and endurance were decreased and the POD was increased during the off medication period compared to normal subjects. There was a nonsignificant trend to an increase in PImax, PEmax and endurance after L-dopa intake. The POD of PD patients decreased (p<0.05) following medication, although, it remained increased (p<0.01) as compared to the normal subjects. Even if patients had spirometry data showing a mild restrictive pattern, before medication, both forced vital capacity (FVC) and forced expiratory volume (FEV)1 remained almost identical after L-dopa intake.Conclusions:Patients with PD have higher POD, compared to normal subjects and this increased perception is attenuated when the patients are on dopaminergic medication. The change in the POD is not related to changes in respiratory muscle performance or pulmonary functions. A central effect or a correction of uncoordinated respiratory movements by L-dopa may contribute to the decrease in POD following L-dopa treatment.


1996 ◽  
Vol 29 (5) ◽  
pp. 955-959
Author(s):  
Hajime Saitoh ◽  
Shichisaburo Abo ◽  
Michihiko Kitamura ◽  
Yoshihiro Minamiya ◽  
Hidekazu Matsumoto ◽  
...  

2017 ◽  
Vol 11 (5) ◽  
pp. 787-792 ◽  
Author(s):  
Wataru Saito ◽  
Kosuke Mizuno ◽  
Gen Inoue ◽  
Takayuki Imura ◽  
Toshiyuki Nakazawa ◽  
...  

<sec><title>Study Design</title><p>Retrospective cohort study.</p></sec><sec><title>Purpose</title><p>To investigate the effect of spinal correction on respiratory muscle strength in patients with Duchenne muscular dystrophy (DMD).</p></sec><sec><title>Overview of Literature</title><p>Several studies have reported that scoliosis correction in patients with DMD does not improve pulmonary function. In these studies, pulmonary function was evaluated using the traditional spirometric values of percent vital capacity (%VC) and percent forced vital capacity (%FVC). However, traditional spirometry may not be suitable for patients with DMD because the results can be influenced by patient fatigue or level of understanding. Therefore, we evaluated respiratory function focusing on respiratory muscle strength using maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), and sniff nasal inspiratory pressure (SNIP), in addition to %VC and %FVC.</p></sec><sec><title>Methods</title><p>We retrospectively reviewed 16 patients with DMD who underwent spinal correction surgery between 2006 and 2011 at Kitasato University Hospital. All patients were males, and the mean age was 13.5 years. Respiratory muscle strength was evaluated using MIP, MEP, and SNIP. Measurements were obtained preoperatively and at 1 and 6 months postoperatively, and %VC and %FVC were obtained preoperatively and within 6 months postoperatively.</p></sec><sec><title>Results</title><p>The mean preoperative and postoperative %VC values were 54.0% and 51.7%, whereas the mean %FVC values were 53.9% and 53.2%, respectively. The mean MIP, MEP, and SNIP values obtained preoperatively and at 1 and 6 months postoperatively were as follows: MIP, 40.5, 42.7 and 47.2 cm H<sub>2</sub>O; MEP, 26.0, 28.0, and 29.0 cm H<sub>2</sub>O; and SNIP, 33.4, 33.0, and 33.0 cm H<sub>2</sub>O; respectively. The mean MIP and MEP values significantly improved postoperatively. There were no significant differences in SNIP, %VC, or %FVC preand postoperatively.</p></sec><sec><title>Conclusions</title><p>By focusing on respiratory muscle strength, our results suggest that scoliosis correction in patients with DMD might have a favorable effect on respiratory function.</p></sec>


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