School of Health Sciences, Queen Margaret University, EH21 6UU Edinburgh, United Kingdom.
J Rehabil Med. 2014 Apr;46(4):348-56. doi: 10.2340/16501977-1278.
The health benefits of high-intensity interval training in cardiac rehabilitation warrant further research. We compared the effectiveness of low-volume high-intensity interval training vs continuous aerobic exercise training in chronic heart failure.
DESIGN/SETTINGS: Unblinded, two arm parallel design with random assignment to exercise interventions in out-patient hospital rehabilitation gym.
Patients with signs of chronic heart failure and ejection fraction < 45%, (mean age: 59.1 years (standard deviation (SD) 8.6); 3 women) completed 6 months of exercise using continuous aerobic exercise training (n = 9) or high-intensity interval training (n = 8). Cardiorespiratory fitness was determined during cycle ergometry using respiratory gas exchange analysis. Functional capacity was assessed via sit-to-stand and gait speed. Quality of life was assessed using the MOS Short-Form 36 and Minnesota living with heart failure questionnaires. Cardiac autonomic regulation was assessed using Heart Rate Variability.
Analysis of Covariance revealed significant time effects but no group × time interactions for exercise and functional capacity outcomes. Peak oxygen uptake (VO2peak) improved by a mean of 14.9% (SD 16.3%) from baseline and by 22% (SD 28.3) at ventilatory threshold in both groups. Sit-to-stand (11.9 (SD 11%)) and gait speed (16.0 (SD 19%)) improved similarly in both groups. No changes in quality of life or heart rate variability were noted. Training adaptations in high-intensity interval training were achieved despite a significantly reduced time commitment and total work volume compared to continuous aerobic exercise training.
Low-volume high-intensity interval training is a feasible and well tolerated training modality in cardiac rehabilitation settings, but is not more effective than continuous aerobic exercise training.
高强度间歇训练对心脏康复的健康益处值得进一步研究。我们比较了低容量高强度间歇训练与连续有氧运动训练在慢性心力衰竭中的效果。
设计/设置：在门诊医院康复健身房进行盲法、双臂平行设计，随机分配至运动干预组。
有慢性心力衰竭迹象且射血分数<45%的患者（平均年龄：59.1 岁（标准差 8.6）；女性 3 人）完成了 6 个月的运动，采用连续有氧运动训练（n=9）或高强度间歇训练（n=8）。使用呼吸气体交换分析在测功机上确定心肺适应能力。通过坐站和步态速度评估功能能力。使用 MOS 短期健康调查 36 项和明尼苏达州心力衰竭生活质量问卷评估生活质量。使用心率变异性评估心脏自主神经调节。
协方差分析显示，运动和功能能力结果有显著的时间效应，但无组×时间交互作用。峰值摄氧量（VO2peak）从基线提高了 14.9%（SD 16.3%），在通气阈值时提高了 22%（SD 28.3%），两组均如此。坐站（11.9（SD 11%））和步态速度（16.0（SD 19%））在两组中均有相似的改善。生活质量或心率变异性无变化。尽管高强度间歇训练的时间投入和总工作量明显减少，但仍能实现训练适应性。
低容量高强度间歇训练是心脏康复环境中一种可行且耐受良好的训练方式，但并不比连续有氧运动训练更有效。
