1997
DOI: 10.1378/chest.111.3.802
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How Many Maneuvers Are Required to Measure Maximal Inspiratory Pressure Accurately?

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Cited by 108 publications
(88 citation statements)
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“…This device has been shown to measure inspiratory and expiratory pressures accurately and reliably (12). A minimum of five technically satisfactory measurements were conducted and the highest of three measurements with less than 5% variability or within 5 cm H 2 O (1 kPa ϭ 10.3 cm H 2 O) difference was defined as maximum (34). The initial length of the inspiratory muscles was controlled by initiating each effort from residual volume (RV).…”
Section: Methodsmentioning
confidence: 99%
“…This device has been shown to measure inspiratory and expiratory pressures accurately and reliably (12). A minimum of five technically satisfactory measurements were conducted and the highest of three measurements with less than 5% variability or within 5 cm H 2 O (1 kPa ϭ 10.3 cm H 2 O) difference was defined as maximum (34). The initial length of the inspiratory muscles was controlled by initiating each effort from residual volume (RV).…”
Section: Methodsmentioning
confidence: 99%
“…The measurements took place at the same time of day for each participant. Volunteers were asked to perform 18 maximum inspiratory efforts and 18 maximum expiratory efforts in both the sitting and standing position, 23,24 with a 30-seconds interval between efforts, and 3-min interval between the 4 test conditions (sitting MIP, standing MIP, sitting MEP, and standing MEP). The tests were in random order.…”
Section: Protocolmentioning
confidence: 99%
“…However, Wilson et al 6 did not establish a maximum limit, it was only determined the performance of at least 3 maneuvers. In 1997, a study conducted by Wen et al 25 stated that a larger number of maneuvers could determine more effectively there spiratory muscle weakness. In opposition to this perspective, Smyth et al 7 stated that in clinical practice the performance of successive repetitions of these maneuvers can be impractical in the assessment of patients.…”
Section: Discussionmentioning
confidence: 99%