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The stress exercise test and oxygen uptake in normal Korean men.

Shim WJ, Suh SK - Korean J. Intern. Med. (1986)

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ABSTRACT

In order to observe physiologic responses to exercise and measure the normal value of maximal oxygen uptake, an exercise stress test, using a bicycle ergometer, was carried out on 82 normal males, 20 to 60 years of age.

The exercise test consisted of 1 minute of unloaded cycling with an increment of 25 watts each minute to the point of exhaustion. Oxygen uptake, anaerobic threshold(AT), minute ventilation, and CO2 output were measured with an automatic gas analyzer and a pneumotachograph during the exercise.

The maximal oxygen uptake in the 20–29 year-old group of subjects was 39.6ml/min/kg, and it decreased with advancing age.

The anaerobic threshold was 1.22–1.5 L/min in all age groups. No significant differences by age were observed. The mean ratio of the anaerobic threshold to the maximal oxygen uptake was 57%.

The minute ventilation at maximal exercise was 65% of the maximal voluntary ventilation. This means that the subject cannot perform exercise at all, because of shortness of breath, that some potentially useful ventilation is left.

The minute ventilation at maximal exercise was 65% of the maximal voluntary ventilation. This means that the subject cannot perform exercise at all, because of shortness of breath, that some potentially useful ventilation is left.

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Individual maximal oxygen uptake in relation to age (n = 82)
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f1a-kjim-1-2-145-3: Individual maximal oxygen uptake in relation to age (n = 82)

Mentions: The mean and standard deviations of maximal oxygen uptake are shown in Table 2. The maximal oxygen uptake was highest in the 20–29 year-old group and it decreased gradually with advancing age. Individual oxygen uptake in relation to age is given in Fig. 1a. Regression of the maximal oxygen uptake on age produces the following equation: maximal oxygen uptake (ml/kg/min) = 46.27 −0.26×age (year) (r=−0.5710, p<.01), which indicates a mean rate of decline of −0.26 ml/kg/min per year of age. The values of the maximal oxygen uptake in our study are compared, in Figure 1b, with data reported by other investigators.


The stress exercise test and oxygen uptake in normal Korean men.

Shim WJ, Suh SK - Korean J. Intern. Med. (1986)

Individual maximal oxygen uptake in relation to age (n = 82)
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4536720&req=5

f1a-kjim-1-2-145-3: Individual maximal oxygen uptake in relation to age (n = 82)
Mentions: The mean and standard deviations of maximal oxygen uptake are shown in Table 2. The maximal oxygen uptake was highest in the 20–29 year-old group and it decreased gradually with advancing age. Individual oxygen uptake in relation to age is given in Fig. 1a. Regression of the maximal oxygen uptake on age produces the following equation: maximal oxygen uptake (ml/kg/min) = 46.27 −0.26×age (year) (r=−0.5710, p<.01), which indicates a mean rate of decline of −0.26 ml/kg/min per year of age. The values of the maximal oxygen uptake in our study are compared, in Figure 1b, with data reported by other investigators.

View Article: PubMed Central - PubMed

ABSTRACT

In order to observe physiologic responses to exercise and measure the normal value of maximal oxygen uptake, an exercise stress test, using a bicycle ergometer, was carried out on 82 normal males, 20 to 60 years of age.

The exercise test consisted of 1 minute of unloaded cycling with an increment of 25 watts each minute to the point of exhaustion. Oxygen uptake, anaerobic threshold(AT), minute ventilation, and CO2 output were measured with an automatic gas analyzer and a pneumotachograph during the exercise.

The maximal oxygen uptake in the 20&ndash;29 year-old group of subjects was 39.6ml/min/kg, and it decreased with advancing age.

The anaerobic threshold was 1.22&ndash;1.5 L/min in all age groups. No significant differences by age were observed. The mean ratio of the anaerobic threshold to the maximal oxygen uptake was 57%.

The minute ventilation at maximal exercise was 65% of the maximal voluntary ventilation. This means that the subject cannot perform exercise at all, because of shortness of breath, that some potentially useful ventilation is left.

The minute ventilation at maximal exercise was 65% of the maximal voluntary ventilation. This means that the subject cannot perform exercise at all, because of shortness of breath, that some potentially useful ventilation is left.

Show MeSH