Singh T P, Curran T J, Rhodes J
Department of Pediatric Cardiology, Children's Hospital, Boston, 300 Longwood Avenue, Boston, MA 02115, USA.
Pediatr Cardiol. 2007 Jul-Aug;28(4):276-9. doi: 10.1007/s00246-006-0114-0. Epub 2007 May 25.
We assessed heart rate (HR) recovery following peak exercise before and after a 12-week cardiac rehabilitation program in 14 children, 12.1+/-1.8 years of age, with repaired complex congenital heart disease (CHD; 11 with Fontan surgery) and impaired exercise performance. Exercise testing using bicycle ergometry was performed at baseline, after completion of the rehab program and 1.0+/-0.2 years after the baseline test. These data were compared to HR recovery in 15 controls (age, 12.7+/-2.4 years) with CHD (13 with Fontan surgery) with two serial exercise tests at an interval of 1.1+/- 0.3 years. There was no change in peak HR between the two serial tests in either group. Peak VO2 improved in the rehab group (26.3+/-9.6 ml/kg/min at baseline vs 30.9+/-9.6 ml/kg/min after rehab, p=0.01) but remained unchanged in controls on serial testing. One-minute HR recovery (in beats per minute) improved significantly following completion of the rehab program (27+/-15 at baseline vs 40+/-23 after rehab, p=0.01). Partial improvement in 1-minute HR recovery in the rehab group persisted 1 year later (1-minute HR recovery, 35+/-19; p=0.1 compared to baseline). There was no change in 1-minute HR recovery over time in the control group (37+/-16 vs 40+/-13, p = not significant). In conclusion, HR recovery following peak exercise improves in children with CHD after participation in a cardiac rehab program.
我们评估了14名年龄在12.1±1.8岁、患有复杂性先天性心脏病（CHD；11例行Fontan手术）且运动能力受损的儿童，在为期12周的心脏康复计划前后，运动峰值后的心率（HR）恢复情况。在基线、康复计划完成后以及基线测试后1.0±0.2年，使用自行车测力计进行运动测试。将这些数据与15名患有CHD（13例行Fontan手术）的对照组（年龄12.7±2.4岁）的HR恢复情况进行比较，对照组进行了两次间隔为1.1±0.3年的连续运动测试。两组的两次连续测试之间，运动峰值心率均无变化。康复组的峰值摄氧量有所改善（基线时为26.3±9.6 ml/kg/min，康复后为30.9±9.6 ml/kg/min，p = 0.01），但对照组在连续测试中保持不变。康复计划完成后，1分钟心率恢复（每分钟心跳数）显著改善（基线时为27±15，康复后为40±23，p = 0.01）。康复组1分钟心率恢复的部分改善在1年后仍然存在（1分钟心率恢复为35±19；与基线相比，p = 0.1）。对照组的1分钟心率恢复随时间没有变化（37±16 vs 40±13，p = 无显著差异）。总之，患有CHD的儿童在参与心脏康复计划后，运动峰值后的心率恢复情况有所改善。
