What is the functional capacity in METs and Vo2 (mL/kg/min) of a 70 kg man who completed Stage V (3mph, 12.5% grade) of a Balke TM test?
To calculate the functional capacity in METs and VO2 (mL/kg/min), we need to convert the treadmill speed and grade to METs and use the Balke equation to estimate VO2.
First, let's calculate the functional capacity in METs:
1. Convert the treadmill speed from mph to m/min:
3 mph = 3 * 26.8 m/min = 80.4 m/min
2. Convert the treadmill grade to METs:
12.5% grade = 12.5 * 1.67 METs = 20.8 METs
3. Calculate METs using the following formula:
METs = (speed in m/min × 0.1) + (1.8 × speed in m/min × grade) + 3.5
METs = (80.4 × 0.1) + (1.8 × 80.4 × 20.8) + 3.5
METs = 8.04 + 2976.38 + 3.5
METs ≈ 2987.92
The functional capacity in METs for the man who completed Stage V is approximately 2987.92 METs.
Next, let's calculate VO2 (mL/kg/min):
VO2 (mL/kg/min) = METs × 3.5
VO2 (mL/kg/min) = 2987.92 × 3.5
VO2 (mL/kg/min) ≈ 10460.72 mL/kg/min
Therefore, the functional capacity in METs for the 70 kg man who completed Stage V is approximately 2987.92 METs, and the estimated VO2 is approximately 10460.72 mL/kg/min.
To determine the functional capacity in METs and VO2 (mL/kg/min) of a person who completed a specific stage of a Balke TM (treadmill) test, we need to know the conversion factors for METs and the equation for calculating VO2.
1. METs (Metabolic Equivalents): METs are unitless values used to estimate the energy expenditure of physical activities. One MET is the amount of energy expended at rest, which is approximately equal to 3.5 mL/kg/min of oxygen uptake (VO2).
2. VO2 (oxygen consumption): VO2 represents the amount of oxygen a person consumes during exercise and is usually expressed in mL/kg/min. It is a measure of the body's ability to take in and utilize oxygen.
To find the functional capacity in METs and VO2, we can follow these steps:
Step 1: Determine the treadmill speed and grade for Stage V of the Balke TM test.
In this case, the speed is 3 mph (miles per hour), and the grade is 12.5%.
Step 2: Calculate the METs.
To convert the speed (mph) and grade (% grade) into METs, we use standard conversion values:
- For 3 mph: 3 METs
- For 12.5% grade: an additional 1 MET
Adding the two values together, we get a total of 4 METs for this stage.
Step 3: Calculate the VO2.
To calculate VO2 in mL/kg/min, we multiply the METs by 3.5 mL/kg/min (since 1 MET is equal to 3.5 mL/kg/min).
For Stage V, which has a total of 4 METs, we would perform the following calculation:
4 METs * 3.5 mL/kg/min = 14 mL/kg/min
Therefore, the functional capacity in METs for a 70 kg man who completed Stage V (3 mph, 12.5% grade) of the Balke TM test would be 4 METs. Additionally, the VO2 would be 14 mL/kg/min.