Complete Table for Body-Oxygen Level in Sick People

- Updated on November 10, 2021

Medical and physiological studies and research articles about BHT (breath holding time) test, or CP (Control Pause), or Buteyko Control Pause, or body oxygen index, or body oxygen level in sick people

Here is a more detailed Table from the web page Breath Holding Time (Oxygenation Index – CP) in Sick People

Abbreviations for Table 5: “max” – maximum; “in” – inhalation; “out” – outhale or exhalation; “norm” – normal.

Table (Low Body-Oxygen Level or Body Oxygen Index in the Sick)

Condition# of
Test conditions
(order of actions
before BHT test)
% of
for CP
Hypertension9512 s12 sNorm out, stress100%Ayman et al, 1939
Neurocircular. asthenia5416 s40 sMax in40%Friedman, 1945
Anxiety states6220 s28 sNorm in73%Mirsky et al, 1946
Class 1 heart patients1616 s48 sMax: in, out, in33.3%Kohn & Cutcher, 1970
Class 2-3 heart patients5313 s39 sMax: in, out, in33.3%Kohn & Cutcher, 1970
Pulmonary emphysema38 s23 sMax: in, out, in33.3%Kohn & Cutcher, 1970
Functional heart disease135 s15 sMax: in, out, in33.3%Kohn & Cutcher, 1970
Asymptom. asthmatics720 s55 sMax out, max in38 %Davidson et al, 1974
Asthmatics with sympt1311 s27 sMax in40 %Perez-Padilla .., 1989
Panic attack1411 s34 sDeep breath:50%O233.3%Zandbergen .., 1992
Anxiety disorders1416 s49 sDeep breath:50%O233.3%Zandbergen .., 1992
Outpatients2517 s43 sMax in40 %Gay et al, 1994
Inpatients2510 s25 sMax in40 %Gay et al, 1994
COPD or CHF78 s21 sMax in40 %Gay et al, 1994
12 heavy smokers128 s21 sMax in40 %Gay et al, 1994
Panic disorder2316 s16 sNorm out100%Asmudson…, 1994
sleep apnea3020 s20 sNorm out100%Taskar et al, 1995
Success. lung transpl.923 s23 sNorm out100%Flume et al, 1996
Success. heart transpl.828 s28 sNorm out100%Flume et al, 1996
Outpatients with COPD878 s9.2 sNorm out, supine90%Marks et al, 1997
Asthma5514 s24Norm out, trained60 %Nannini et al, 2007

Notes. “Handbook of physiology”, after analyzing numerous studies, suggested the following proportions for BHT test measurements (Mithoefer, 1965). If BHT test after full inhalation is 100%; then BHT test after normal inhalation is about 55%; BHT after normal exhalation is around 40%; BHT after full exhalation is about 24%. Taking an additional full exhalation or inhalation just before starting the test increases BHT test results by 5 to 15% respectively for each manoeuvre. Those subjects, who have repetitive breath holds many times in a day, experience the “training” effect. It gradually increases maximum BHT (up to 30%), but the BHT test done until the first stress or initial discomfort is not improved after such training. This data allows us to compare different BHT test results done during almost a century of physiological and clinical research investigations, if we chose some standard conditions for the test: the CP or BHT test after quiet or usual expiration and only until the first sensation of air-hunger (a stress-free version of the BHT test). For people who practiced breath holding test many times per day, maximum BHT (for as long as possible) after usual exhalation is around 2 times longer then the CP number due to the “training effect”.

**. Zandbergen et al, 1992 conducted their research experiments with the mixture of about 50% O2 and 50% N2. According to Ferris with his colleagues (1945), this mixture increases normal BHT test by about 50%.

These breath holding time or CP numbers for the sick can be compared with Normal Body-Oxygen Level Results – CP in Healthy People

References for Table 5 (CP in Sick People)

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