For each description of muscular activity A–E, select the most appropriate level of METS from the following list, where 1 MET equals the rate of metabolism associated with each individual in the stable resting state (3.5 ml oxygen/min/kg weight).
1. 0.5 METS.
2. 1 MET.
3. 2 METS.
4. 4 METS.
5. 8 METS.
6. 16 METS.
7. 32 METS.
8. 64 METS
- An individual with cardiac or respiratory disease is just able to leave the house and walk slowly for a short distance.
- An individual who is above average physical fitness and is being considered for a national athletics team can just reach this level.
- The level of activity associated with brisk walking.
- The level of activity associated with the average individual climbing 100–200 steps at a rate which is approaching the maximal possible for that person.
- The level of sustainable activity in a fit 90-year-old.
Medicine
A. Option 3 2 METS. This is the borderline between being able to get out and about and being totally housebound and 100 per cent disabled.
B. Option 6 16 METS. The average fit young to middle-aged person can reach around 10 METS; athletes around 15–20 METS; super Olympic athletes may exceed this.
C. Option 4 4 METS. Brisk walking involves almost half way to maximal exertion for many people.
D. Option 5 8 METS. Since the average person can reach about 10 METS, 8 METS is close to the maximal sustainable for a moderate period of time.
E. Option 4 4 METS. Maximal exertional ability declines after around 25–30 years; the world record for the mile at 90 years of age is just under a quarter of an hour, not much above the brisk walking speed.
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