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Table 1b. Western scientific evidence about prevalence of CHV
(chronic hyperventilation) in patients with asthma.

*One row corresponds to one medical study/publication

Condition	Minute ventilation	Number of patients	Prevalence of CHV	References (click below for abstracts)
Normal breathing	6 l/min	-	0 %	Medical textbooks
Asthma	13 (±2) l/min	16	100%	Chalupa et al, 2004
Asthma	15 l/min	8	100%	Johnson et al, 1995
Asthma	14 (±6) l/min	39	100%	Bowler et al, 1998
Asthma	13 (±4) l/min	17	100%	Kassabian et al, 1982
Asthma	12 l/min	101	100%	McFadden & Lyons, 1968

References (in the same order)

Chalupa et al, 2004 (click on the name to read the abstract of the study)

Chalupa DC, Morrow PE, Oberdörster G, Utell MJ, Frampton MW, Ultrafine particle deposition in subjects with asthma, Environmental Health Perspectives 2004 Jun; 112(8): p.879-882.

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Johnson et al, 1995

Johnson BD, Scanlon PD, Beck KC, Regulation of ventilatory capacity during exercise in asthmatics, J Appl Physiol. 1995 Sep; 79(3): p. 892-901.

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Bowler et al, 1998

Bowler SD, Green A, Mitchell CA, Buteyko breathing techniques in asthma: a blinded randomised controlled trial, Med J of Australia 1998; 169: p. 575-578.

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Kassabian et al, 1982

Kassabian J, Miller KD, Lavietes MH, Respiratory center output and ventilatory timing in patients with acute airway (asthma) and alveolar (pneumonia) disease, Chest 1982 May; 81(5): p.536-543.

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McFadden & Lyons, 1968

McFadden ER & Lyons HA, Arterial-blood gases in asthma, The New Engl J of Med 1968 May 9, 278 (19): 1027-1032.

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