Izawa Kazuhiro P, Watanabe Satoshi, Oka Koichiro, Kobayashi Toru, Osada Naohiko, Omiya Kazuto
Department of Rehabilitation Medicine, St. Marianna University School of Medicine Hospital, Kawasaki 216-8511, Japan.
Faculty of Sport Sciences, Waseda University, Saitama 359-1192, Japan.
J Jpn Phys Ther Assoc. 2006;9(1):1-8. doi: 10.1298/jjpta.9.1.
Exercise maintenance after supervised cardiac rehabilitation is important in maintaining both physical activity and physiological factors, such as peak and muscle strength (MS), associated with reduced mortality. However, there is no evidence of the effects of unsupervised exercise training and MS training on physical activity and physiological factors after supervised cardiac rehabilitation of Japanese cardiac patients. We conducted a randomized, controlled trial to evaluate the effect of unsupervised exercise training on physical activity and selected physiological factors after supervised cardiac rehabilitation. Eighteen myocardial infarction (MI) patients (16 men, 2 women; mean age 66.3 years) were recruited following completion of a supervised recovery-phase cardiac rehabilitation program. Patients were randomly assigned to a MS training (n=10) or control group (n=8). Baseline measurements of physical activity, peak , and MS were performed at the end of supervised recovery-phase cardiac rehabilitation (6 months after the onset of MI: T1). Six months later, after going through an unsupervised exercise program (12 months after the onset of MI: T2) exercise maintenance, peak , MS, and physical activity were remeasured. The MS training group performed low-intensity MS training and walking over the second 6-month period; the control group performed walking exercise only. All patients maintained their exercise training. At T2, there were no significant differences in peak values between the MS training and control groups. There was also no significant difference in physical activity (mean number of steps per week) between the MS training and control groups. However, MS was significantly higher in the MS training group than in the control group. We concluded that unsupervised exercise training and low-level MS training performed after supervised cardiac rehabilitation may effectively maintain not only physical activity and peak but increase MS.
在有监督的心脏康复后维持运动对于保持身体活动以及与降低死亡率相关的生理因素（如峰值和肌肉力量）非常重要。然而，对于日本心脏病患者在有监督的心脏康复后，无监督运动训练和肌肉力量训练对身体活动和生理因素的影响尚无证据。我们进行了一项随机对照试验，以评估有监督的心脏康复后无监督运动训练对身体活动和选定生理因素的影响。18名心肌梗死（MI）患者（16名男性，2名女性；平均年龄66.3岁）在完成有监督的康复期心脏康复计划后被招募。患者被随机分配到肌肉力量训练组（n = 10）或对照组（n = 8）。在有监督的康复期心脏康复结束时（MI发病后6个月：T1）进行身体活动、峰值和肌肉力量的基线测量。6个月后，在经历无监督运动计划后（MI发病后12个月：T2）重新测量运动维持情况、峰值、肌肉力量和身体活动。肌肉力量训练组在第二个6个月期间进行低强度肌肉力量训练和步行；对照组仅进行步行运动。所有患者都维持了他们的运动训练。在T2时，肌肉力量训练组和对照组之间的峰值没有显著差异。肌肉力量训练组和对照组之间的身体活动（每周平均步数）也没有显著差异。然而，肌肉力量训练组的肌肉力量显著高于对照组。我们得出结论，有监督的心脏康复后进行无监督运动训练和低水平肌肉力量训练不仅可以有效维持身体活动和峰值，还可以增加肌肉力量。
