Training level comparison study. Effect of high and low intensity exercise on ventilatory threshold in men with coronary artery disease.
| Autor: | Jensen BE; Emory University, Atlanta, Georgia, USA., Fletcher BJ, Rupp JC, Fletcher GF, Lee JY, Oberman A |
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| Jazyk: | angličtina |
| Zdroj: | Journal of cardiopulmonary rehabilitation [J Cardiopulm Rehabil] 1996 Jul-Aug; Vol. 16 (4), pp. 227-32. |
| DOI: | 10.1097/00008483-199607000-00003 |
| Abstrakt: | Purpose: To determine whether exercise at low intensity (LO; 50% of peak VO2) or high intensity (HI; 85% of peak VO2) results in improvement of the ventilatory threshold (VT), 186 men with coronary artery disease (CAD) were enrolled in an exercise study for 1 year. Methods: A symptom-limited exercise test was performed at baseline and the heart rate corresponding to 50% and 85% of peak VO2 was determined. Subjects were randomized to LO or HI intensity exercise. Exercise sessions included 45 minutes of walking/jogging and/or stationary cycling at the appropriate target heart rate and were conducted 3 days per week. The exercise test was repeated at 3 and 6 months. Target heart rates were revised to adjust for training. Results: Both LO and HI resulted in improved VO2 at VT and peak. However, HI resulted in greater improvement than LO. Conclusion: Among this population, both HI and LO improve the VO2 at VT and peak, but the improvement is greater with HI. The VT can be a useful adjunct to heart rate and peak oxygen uptake when prescribing exercise. |
| Databáze: | MEDLINE |
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