The lung function test parameters were also recorded after Hajj, and a significant decline was found among Hajj pilgrims who were wearing cotton towel ihrams in Peak Expiratory Flow
(PEF) 5.69+-1.87 vs.
Peak expiratory flow
rate as a surrogate for forced expiratory volume in 1 second in COPD severity classification in Thailand.
Results: The mean peak expiratory flow
rate score of patients without the education of proper technique was 320 +- 9.28 whereas mean PEFR score in patients after the proper metered dose inhaler technique was 460 +- 6.66 (p-value<0.001).
Peak Flow Meter: Peak flow meter was used to measure air flowing out of the lungs this test is called peak expiratory flow
Fluctuation analysis of peak expiratory flow
and its association with treatment failure in asthma.
 ISO 23747:2015, "Anaesthetic and respiratory equipment peak expiratory flow
meters for the assessment of pulmonary function in spontaneously breathing humans," International Organization for Standardization, Edition 2, pp 1-26, August 2015, https://www.iso.org/standard/64926.html.
The measurement of the Spirometric Peak Expiratory Flow
(S-PEF) and FEV1 required 3 to 5 spirometric forced maneuvers respecting the acceptability and reproducibility criteria cited in the ATS/ERS recommendations , and we noted the best values.
Lung function parameters measured were: FEV[sub]1, peak expiratory flow
(PEF), forced expiratory flow at 50% of forced vital capacity (FEF[sub]50), forced expiratory flow at 75% of forced vital capacity (FEF[sub]75), and maximum mid-expiratory flow rate (MMEF).
In the common context of preceding asthma, prior to the work exposures, and/or an absence of a specific sensitizer at work, the findings of work-related worsening of asthma documented by serial peak expiratory flow
recordings, symptoms and medications are supportive of WEA.
Similarly, the Peak Expiratory Flow
Rate ( PEFR) has shown a corresponding risk of predicted cases of around 80 per cent.
Background and Aims: Hand dynamometry is a predictor of surgical outcome and old age disability whereas peak expiratory flow
rate (PEFR) has been used as an index of respiratory function.
The data included a measure of the participants' social roles and assessed their pulmonary function according to peak expiratory flow
rate, the measurement of air flowing out of the lungs.