Document Classification

Section Type: RESULTS

Text: Comparing postimplant exercise testing in DDIR mode with preimplant tests, peak heart rate increased from 96 + / - 17 to 115 + / - 17 bpm (+20 %, p < 0. 0001), total work capacity from 7. 0 + / - 3. 5 to 8. 8 + / - 4. 3 minutes (+26 %, p < 0. 0001), peak oxygen uptake from 1238 + / - 406 to 1453 + / - 423 ml/min (+17 %, p < 0. 001) and oxygen uptake at anaerobic threshold from 977 + / - 343 to 1222 + / - 415 ml/min (+25 %, p < 0. 001).