Bruce protocol
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Indications
Procedure
- exercise tolerance testing (ETT) using treadmill.
Stages
| stage | speed | grade | time | Mets |
|---|---|---|---|---|
| I | 1.7 mph | 10% grade | 3 min | 4 Mets |
| II | 2.5 mph | 12% grade | 3 min | 7 Mets |
| III | 3.4 mph | 14% grade | 3 min | 10 Mets |
| IV | 4.2 mph | 16% grade | 3 min | 14 Mets |
| V | 5.0 mph | 18% grade | 3 min | 16 Mets |