College of Nursing, Taipei Medical University, Taipei, Taiwan.
J Clin Nurs. 2012 Nov;21(21-22):3235-43. doi: 10.1111/j.1365-2702.2012.04070.x. Epub 2012 Sep 17.
To investigate the relationship between physical activity and heart rate variability in orthotopic heart transplant recipients, to compare the difference in heart rate variability between patients one year after orthotopic heart transplant and healthy adults matched to the heart transplant recipients in terms of age, gender and physical activity levels.
Although physical activity affects the heart rate variability in patients with heart disease, there is a paucity of literature discussing the correlation between physical activity and heart rate variability among heart transplant recipients.
This was a descriptive and cross-sectional study.
A total of 120 eligible subjects were divided into the orthotopic heart transplant recipient group (n = 60) and the healthy adult group (n = 60). The Seven-day Physical Activity Recall questionnaire was used to record the subjects' amount of physical activity per week. Heart rate variety parameters were determined by separate frequency domain components.
Results indicated heart transplant recipients' heart rate variety was significantly lower than that of healthy adults in terms of mean, sdr, total power (ms(2)), low frequency (ms(2)), low frequency (nu), high frequency (ms(2)) and low frequency/high frequency. Heart transplant recipients' heart rate variety including total power (ms(2)), low frequency (ms(2)) and high frequency (ms(2)) was 18·2, 2 and 7·2% of healthy controls, respectively; the amount of absolutely and relatively moderate physical activity was positively related to high frequency (ms(2)) and high frequency (nu), but was negatively related to low frequency/high frequency. High frequency (nu) increases while the total amount of weekly physical activity increases.
Results confirmed that the more the moderate physical activity performed, the better the patient's heart rate variability.
We suggest that clinical care providers have to encourage heart transplant recipients to engage in moderate physical activity.
调查心脏移植受者的体力活动与心率变异性之间的关系，比较心脏移植后 1 年的患者与年龄、性别和体力活动水平与心脏移植受者相匹配的健康成年人之间心率变异性的差异。
尽管体力活动会影响心脏病患者的心率变异性，但关于心脏移植受者体力活动与心率变异性之间的相关性的文献却很少。
这是一项描述性和横断面研究。
共纳入 120 名符合条件的受试者，分为心脏移植受者组（n=60）和健康成年人组（n=60）。使用 7 天体力活动回忆问卷记录受试者每周的体力活动量。通过单独的频域分量确定心率变异性参数。
结果表明，心脏移植受者的心率变异性在平均、sdr、总功率（ms²）、低频（ms²）、低频（nu）、高频（ms²）和低频/高频方面明显低于健康成年人。心脏移植受者的心率变异性包括总功率（ms²）、低频（ms²）和高频（ms²）分别为健康对照组的 18.2%、2%和 7.2%；绝对和相对适度体力活动量与高频（ms²）和高频（nu）呈正相关，与低频/高频呈负相关。随着每周总体力活动量的增加，高频（nu）增加。
结果证实，适度体力活动越多，患者的心率变异性越好。
我们建议临床护理人员必须鼓励心脏移植受者进行适度的体力活动。
