Effect of Posture on Ventilatory Muscle Strength.

Ogiwara, Shimpachiro; Miyachi, Tomoyo

doi:10.1589/jpts.14.1

Cited by 13 publications

(14 citation statements)

References 5 publications

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“…19,20 An f/V T of Ͻ 105 is used as a measure of rapid and shallow breathing 20,21 and has been a useful index for predicting weaning outcome. 10 f/V T is significantly higher in patients who failed weaning. [21][22][23] Although there was no significant difference in weaning rate between the 2 groups, chair-sitting training was associated with a significant f/V T increase in our patients.…”

Section: Discussionmentioning

confidence: 85%

“…8 However, other studies found that the upright sitting position did not improve tidal volume (V T ), total lung capacity, or functional residual capacity in intubated subjects with abdominal distention, ascites, or obesity, 9 and healthy individuals. 10 Chair-sitting (ie, transferring from bed to chair and sitting) combines both positioning and mobilization techniques, and we have applied this technique in our surgical ICU to improve mechanically ventilated patients' respiratory muscle strength. Theoretically, chair-sitting could help the scalene, sternocleidomastoid, and parasternal intercostal muscles be more readily activated, and could raise and enlarge the upper thoracic cage, thereby allowing the thoracic cage to be more easily compressed and increasing P Emax .…”

Section: Introductionmentioning

confidence: 99%

“…Theoretically, chair-sitting could help the scalene, sternocleidomastoid, and parasternal intercostal muscles be more readily activated, and could raise and enlarge the upper thoracic cage, thereby allowing the thoracic cage to be more easily compressed and increasing P Emax . 10 However, there have been few studies on the efficacy of this physiotherapy on respiratory muscle and weaning outcomes in the ICU. We conducted a randomized controlled trial to evaluate the effect of chair-sitting on the respiratory muscles of mechanically ventilated patients in a surgical ICU, and hypothesized that the chair-sitting technique would benefit their respiratory muscle function.…”

Section: Introductionmentioning

confidence: 99%

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Chair-Sitting Exercise Intervention Does Not Improve Respiratory Muscle Function in Mechanically Ventilated Intensive Care Unit Patients

Chang

Huang

et al. 2011

Respir Care

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BACKGROUND: Chair-sitting may allow for more readily activated scalene, sternocleidomastoid, and parasternal intercostal muscles, and may raise and enlarge the upper thoracic cage, thereby allowing the thoracic cage to be more easily compressed. OBJECTIVE: To evaluate the effect of chair-sitting during exercise training on respiratory muscle function in mechanically ventilated patients. METHODS: We randomized 16 patients to a control group and 18 patients to a chairsitting group. The patients in the chair-sitting group were transferred by 2 intensive care unit nurses from bed to armchair and rested for at least 30 min, based on the individual patient's tolerance. We measured heart rate, blood pressure, S pO 2 , and respiratory rate. In the treatment group, before transferring the patient from bed to armchair, and 30 min after the completion of chair-sitting we measured respiratory muscle function variables, including the ratio of respiratory rate (f) to tidal volume (V T ), S pO 2 , maximum inspiratory pressure (P Imax ) and maximum expiratory pressure (P Emax ). In the control patients we took those same measurements while the patient was in semirecumbent position, before and after treatments, for at least 6 days or until the patient was discharged from the intensive care unit or died. RESULTS: The 2 groups did not significantly differ in age, sex, or clinical outcomes. Respiratory rate, V T , f/V T , S pO 2 , P Imax , and P Emax were not significantly better in the chair-sitting group. The study period significantly improved respiratory rate, V T , P Imax , and P Emax (all P < .001), but not f/V T . CONCLUSIONS: Six days of chair-sitting exercise training did not significantly improve respiratory muscle function in mechanically ventilated patients.

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Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Chair-Sitting Exercise Intervention Does Not Improve Respiratory Muscle Function in Mechanically Ventilated Intensive Care Unit Patients

Chang

Huang

et al. 2011

Respir Care

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“…Ogiwara and Miyachi 10) reported that respiratory muscle strength did not change in sitting, half lying, 'slumped' half lying, supine lying, right side lying and left side lying in twenty young subjects. Our study was similar to their investigation, and similarly indicated that respiratory muscle strength was not influenced by the body position.…”

Section: Discussionmentioning

confidence: 98%

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

2009

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Abstract.[Purpose] The purpose of this study was to compare the respiratory function and respiratory muscle strength in the different body positions in order to find the posture in which it is easiest to cough up secretions or endotracheal aspirate.[Subjects] Fifteen non-smoking healthy women participated. All subjects gave their written consent to the study. [Methods] We measured respiratory muscle strength and respiratory function in three postures: sitting, supine, and 45 degree rotative prone.[Results] Vital capacity, forced vital capacity, forced expiratory volume in one second, and peak expiratory flow were marginally lower in 45 degree rotative prone. Percent of forced expiratory volume in one second was significantly lower in supine compared with sitting (p<0.05).[Conclusion] Our results suggest that 45 degree rotative prone is effective for coughing up secretions and endotracheal aspirate as well as the sitting position in young female subjects.

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“…Mean expiratory pressure and peak expiratory flow rate are influenced by lung volumes and muscle length-tension relationships, which in turn are influenced by body position9 ) . Vital capacity has been found to be lowest in the fetal position compared to other body positions10,11,12 ) . The effects of breathing maneuver and sitting posture on the muscle activities of the inspiratory accessory muscles of patients with chronic obstructive pulmonary disease have been reported13 ) .…”

Section: Introductionmentioning

confidence: 96%

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

et al. 2014

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[Purpose] The purpose of our study was to investigate the effect of different positions on pulmonary function test (PFT) values such as forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) of asthmatic patients .[Subjects and Methods] Thirty subjects with severe asthma aged between 20–39 years were enrolled after they had signed a written consent. Subjects were selected using the inclusion criteria, and PFT were randomly administered. Spirometer measurements (FVC, FEV1) were taken in the supine, side lying on right, side lying on left, sitting and standing positions. Each measurement was taken three times, and the average values were analyzed. [Results] One- way analysis of variance (ANOVA) and Tukey’s Test (post hoc) for pair- wise comparison indicated that there was a significant difference in the FEV1 values of the asthmatic patients however a significant difference was obtained between standing and supine positions. There was also a significant difference in the FVC values between the standing and supine lying position in the pair -wise comparison. [Conclusion] This study showed standing is the best position for measuring FEV1 and FVC of asthmatic subjects. The more upright the position, the higher the FEV1 and FVC will be.

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Effect of Posture on Ventilatory Muscle Strength.

Cited by 13 publications

References 5 publications

Chair-Sitting Exercise Intervention Does Not Improve Respiratory Muscle Function in Mechanically Ventilated Intensive Care Unit Patients

Chair-Sitting Exercise Intervention Does Not Improve Respiratory Muscle Function in Mechanically Ventilated Intensive Care Unit Patients

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

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

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