Peak expiratory flow in healthy, young, non-active subjects in seated, supine, and prone postures

Antunes, Bianca O.; Souza, Hugo Celso Dutra de; Gianinis, Heloisa H.; Passarelli-Amaro, Rita de Cássia Vianna; Tambascio, Joana; Gastaldi, Ada Clarice

doi:10.3109/09593985.2016.1139646

Cited by 10 publications

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“…PEF in different body positions was evaluated in 13 studies [ 3 , 22 – 24 , 31 , 33 , 45 – 51 ]. Eight studies evaluated only healthy adults [ 3 , 22 – 24 , 45 , 48 , 50 , 51 ], three evaluated healthy subjects and patients with COPD or asthma [ 31 , 46 , 49 ], one included adult cystic fibrosis patients [ 47 ], and one included subjects with SCI [ 33 ]. Nine studies that compared standing or sitting positions vs. supine or RSL and LSL found higher PEF in standing and sitting [ 3 , 22 – 24 , 31 , 45 – 48 ].…”

Section: Resultsmentioning

confidence: 99%

“…Eight studies evaluated only healthy adults [ 3 , 22 – 24 , 45 , 48 , 50 , 51 ], three evaluated healthy subjects and patients with COPD or asthma [ 31 , 46 , 49 ], one included adult cystic fibrosis patients [ 47 ], and one included subjects with SCI [ 33 ]. Nine studies that compared standing or sitting positions vs. supine or RSL and LSL found higher PEF in standing and sitting [ 3 , 22 – 24 , 31 , 45 – 48 ]. Three of six studies comparing the standing and sitting positions found higher PEF in standing [ 46 , 50 , 51 ] and one reported higher PEF in sitting [ 22 ].…”

Section: Resultsmentioning

confidence: 99%

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The effect of body position on pulmonary function: a systematic review

et al. 2018

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BackgroundPulmonary function tests (PFTs) are routinely performed in the upright position due to measurement devices and patient comfort. This systematic review investigated the influence of body position on lung function in healthy persons and specific patient groups.MethodsA search to identify English-language papers published from 1/1998–12/2017 was conducted using MEDLINE and Google Scholar with key words: body position, lung function, lung mechanics, lung volume, position change, positioning, posture, pulmonary function testing, sitting, standing, supine, ventilation, and ventilatory change. Studies that were quasi-experimental, pre-post intervention; compared ≥2 positions, including sitting or standing; and assessed lung function in non-mechanically ventilated subjects aged ≥18 years were included. Primary outcome measures were forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC, FEV1/FVC), vital capacity (VC), functional residual capacity (FRC), maximal expiratory pressure (PEmax), maximal inspiratory pressure (PImax), peak expiratory flow (PEF), total lung capacity (TLC), residual volume (RV), and diffusing capacity of the lungs for carbon monoxide (DLCO). Standing, sitting, supine, and right- and left-side lying positions were studied.ResultsForty-three studies met inclusion criteria. The study populations included healthy subjects (29 studies), lung disease (nine), heart disease (four), spinal cord injury (SCI, seven), neuromuscular diseases (three), and obesity (four). In most studies involving healthy subjects or patients with lung, heart, neuromuscular disease, or obesity, FEV1, FVC, FRC, PEmax, PImax, and/or PEF values were higher in more erect positions. For subjects with tetraplegic SCI, FVC and FEV1 were higher in supine vs. sitting. In healthy subjects, DLCO was higher in the supine vs. sitting, and in sitting vs. side-lying positions. In patients with chronic heart failure, the effect of position on DLCO varied.ConclusionsBody position influences the results of PFTs, but the optimal position and magnitude of the benefit varies between study populations. PFTs are routinely performed in the sitting position. We recommend the supine position should be considered in addition to sitting for PFTs in patients with SCI and neuromuscular disease. When treating patients with heart, lung, SCI, neuromuscular disease, or obesity, one should take into consideration that pulmonary physiology and function are influenced by body position.Electronic supplementary materialThe online version of this article (10.1186/s12890-018-0723-4) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The effect of body position on pulmonary function: a systematic review

et al. 2018

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“…Knowing that FEV 1 /FVC is changed whenever one of its parameters is altered, when FEV 1 is reduced, the relationship between them is also reduced. On the other hand, Antunes et al 43 evaluated 30 healthy men, in seating, and supine and prone lying positions. Their results showed that peak expiratory flow is affected depending on the body posture, being considerably higher in sitting individuals when compared to the other evaluated positions.…”

Section: Discussionmentioning

confidence: 99%

Mudança na biomecânica da postura sentada afeta a função pulmonar

et al. 2019

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RESUMO Este trabalho teve como objetivo caracterizar as posturas induzidas por dois sistemas diferentes de cadeira-mesa e analisar seus efeitos na função pulmonar. Trata-se de estudo transversal, descritivo, do tipo sujeito único e intrasséries (A-B, B-A), com coleta em dias consecutivos. Participaram da pesquisa 15 voluntárias e foram utilizados dois sistemas cadeira-mesa: convencional (A) e experimental (B). A postura foi avaliada por meio de fotogrametria em cada um dos sistemas, com imagens analisadas por meio do programa AutoCAD® 2010. Posteriormente, foram calculados os ângulos articulares da postura média das participantes em cada sistema. Os dados posturais e respiratórios foram comparados considerando as diferentes posições adotadas. O sistema cadeira-mesa convencional promoveu dois diferentes padrões posturais: um deles apresentou ângulos articulares similares aos do sistema experimental, com resultados de espirometria semelhantes, e o outro padrão apresentou ângulos corporais de acordo com os padrões esperados com valores de espirometria significativamente inferiores em VEF1, VEF1/CVF e FEFmáx. O sistema experimental diferiu de valores de espirometria da postura ortostática relatados na literatura somente em FEFmáx, sugerindo similaridade de condição postural. Conclui-se que o mobiliário experimental melhorou a função respiratória na postura sentada em comparação com o mobiliário tradicional, podendo beneficiar pessoas em condições especiais, como gestantes, obesos e pessoas com doenças pulmonares crônicas.

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“…PEF recorded in the supine and prone positions is lower as compared to that recorded in the sitting position. [266267] However, there is no significant difference between the PEF recorded in the sitting and standing positions or supine and prone positions. [266267] While performing the PEF maneuver, sufficient care should be exerted to avoid undue flexion/extension of the neck and breath holding at TLC.…”

Section: Miscellaneous and Special Issuesmentioning

confidence: 99%

Joint Indian Chest Society-National College of Chest Physicians (India) guidelines for spirometry

et al. 2019

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Although a simple and useful pulmonary function test, spirometry remains underutilized in India. The Indian Chest Society and National College of Chest Physicians (India) jointly supported an expert group to provide recommendations for spirometry in India. Based on a scientific grading of available published evidence, as well as other international recommendations, we propose a consensus statement for planning, performing and interpreting spirometry in a systematic manner across all levels of healthcare in India. We stress the use of standard equipment, and the need for quality control, to optimize testing. Important technical requirements for patient selection, and proper conduct of the vital capacity maneuver, are outlined. A brief algorithm to interpret and report spirometric data using minimal and most important variables is presented. The use of statistically valid lower limits of normality during interpretation is emphasized, and a listing of Indian reference equations is provided for this purpose. Other important issues such as peak expiratory flow, bronchodilator reversibility testing, and technician training are also discussed. We hope that this document will improve use of spirometry in a standardized fashion across diverse settings in India.

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Peak expiratory flow in healthy, young, non-active subjects in seated, supine, and prone postures

Abstract: Body posture affects PEF in healthy, young, non-active subjects. PEFs are higher when subjects are in a seated position compared to prone or supine positions, but no difference in PEF is observed between the prone and supine positions.

Cited by 10 publications

References 18 publications

The effect of body position on pulmonary function: a systematic review

The effect of body position on pulmonary function: a systematic review

Mudança na biomecânica da postura sentada afeta a função pulmonar

Joint Indian Chest Society-National College of Chest Physicians (India) guidelines for spirometry

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