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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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Oxygen uptake at the anaerobic threshold as a percent of maximal oxygen uptake (VO2 AT/VO2 max %) plotted against VO2 max for all subjects
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f4-kjim-1-2-145-3: Oxygen uptake at the anaerobic threshold as a percent of maximal oxygen uptake (VO2 AT/VO2 max %) plotted against VO2 max for all subjects

Mentions: AT was measured in 80 of the 82 subjects (Table 3 and Fig. 3). The value of the AT in 20–29 year-old-group was the highest of all of the age groups (p< .005). In the 30-, 40-, and 50-year-old-groups, no significant differences were observed. The mean ratio of AT to maximal oxygen uptake in all age groups (Fig. 4) was 57.5% (range: 43–77%).


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

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

Oxygen uptake at the anaerobic threshold as a percent of maximal oxygen uptake (VO2 AT/VO2 max %) plotted against VO2 max for all subjects
© Copyright Policy
Related In: Results  -  Collection

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

f4-kjim-1-2-145-3: Oxygen uptake at the anaerobic threshold as a percent of maximal oxygen uptake (VO2 AT/VO2 max %) plotted against VO2 max for all subjects
Mentions: AT was measured in 80 of the 82 subjects (Table 3 and Fig. 3). The value of the AT in 20–29 year-old-group was the highest of all of the age groups (p< .005). In the 30-, 40-, and 50-year-old-groups, no significant differences were observed. The mean ratio of AT to maximal oxygen uptake in all age groups (Fig. 4) was 57.5% (range: 43–77%).

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