Family practice
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Randomized Controlled Trial
Peak expiratory flow in the standing and sitting positions is equivalent in adults: a cross-over study.
It is uncertain whether peak flow measurement is best done in the standing or sitting position. ⋯ The PEF in the standing and sitting positions was equivalent in adults. Therefore, performing PEF in either position is acceptable. However, health care practitioners should be aware of the small reduction in PEF when it is done in the sitting position. It is desirable that the position used is documented and the same position is used wherever possible.