| 0 |
Rest |
Can converse normally |
| 1-2 |
Low level Sitting |
Rate of breathing increased at times |
| 3-4 |
Fairly light
(Gentle walking) |
Slight breathlessness (50% to 60% MHR) |
| 5-6 |
Fairly Hard
(Brisk walking) |
More difficult to talk and may start sweating (60% to 70% MHR) |
| 7-8 |
Hard
(Speed Walking/Jogging) |
Heavier rate of breathing and more profuse sweating (70% to 80% MHR) |
| 9 |
Very Hard (Jogging/Running) |
Breathing and conversation difficult (80% to 90 MHR) |
| 10 |
Very, Very hard (Running) |
Maximum effort may have feeling of nausea unable to maintain for a long time (90% to MHR) |
