VO2max Lab

7/28/2019 VO2max Lab

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Aidian Peterson-Perry

Intro to Physiology

VO2max Lab



Purpose:

To estimate VO2max, the maximal capacity for oxygen consumption by the body during

maximal exertion.

Method:

The tests performed were, the George Job test and the step test. All outlined procedures

involving these two tests were followed.

The original subject is male, has a height of 6 feet, weighs 165lbs, 20 years old and is

undergoing no intensive training for an athletic competition but does play soccer for fun.

Equipment: stopwatch, 16-inch box and a metronome

Results:

The George Jog Test

Time :10 minutes

Heart Rate : 200 bpm

VO2max (ml/kg/min) = 100.5+ (1 x 8.344) – (weight (kg) x 0.1636) – (Jog time (min) x

1.438) – (HR (bpm) x 0.1928)

VO2max : 43.64 ml/kg/min



Step Test

Heart Rate : 156 bpm

Males VO2max = 111.33 – ( 0.42 x recovery heart rate)

VO2max : 45.81 ml/kg/min

Discussion:

1. The VO2max value calculated for the Step Test performed was higher than the

value calculated for the George Jog test. This difference can be attributed to

several things. The lower VO2max could be due to a lack of fitness and possible a

bad economy of effort. The higher, improved VO2max in the Step test could be

because it was a rather simple exercise that could be perform to ones best ability

without much training.

2. The VO2max value obtained from the subject in the Step test was 45.81 ml/kg/min.

According to the fitness classification table, 45.81 ml/kg/min is a good result for

college-aged students. However, the value for the George Jog test, 43.64

ml/kg/min, is just an average result.

3. The subject’s between average and good VO2max indicates to us his potential for

aerobic endurance, more simply, how well the subject can perform under aerobic

conditions. Training and activity levels must be taken into consideration; less

active individuals are shown to have a lower VO2max, but nevertheless, the subject

can improve his vo2max with training.

4. When doing VO2max tests there are some possible sources of error. Firstly, human

error when trying to obtain an accurate heart rate, incorrect higher or lower heart



rates may be recorded. Also, Heart rate will be affected if the subject is not fully

exerting himself causing a lower heart rate to be recorded. Lower heart rate

reading will result in a high, incorrect VO2max reading, while a higher rate reading

will result in a low, incorrect VO2max reading.

Conclusion:

We were able to estimate VO2max, the maximal capacity for oxygen consumption by the

body during maximal exertion. After concluding both the Step test and the George test

respectively it was noted that the VO2max recorded after the step test was higher. Some

results may have been better than others; this could be due to a number of reasons. The

subject may have been in a period where he/she was not exercising regularly and lacked

over all fitness. The subject might have also been tired after completing one test and not

able to perform optimally. Most athletes who are in regular training should be expected to

score higher than the average college-aged students because they have a better economy

of effort and therefore may be more skilled at the different exercises.

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VO2max Lab