Faulkner James, Gerhard Johannes, Stoner Lee, Lambrick Danielle
School of Sport and Exercise, Massey University, Private Bag 756, Wellington 6140, New Zealand.
Rehabil Res Pract. 2012;2012:140871. doi: 10.1155/2012/140871. Epub 2012 Jul 9.
Purpose. To assess the effect of a self-paced walking intervention within a topographically varied outdoor environment on physiological and perceptual markers in cardiac rehabilitation (CR) patients. Methods. Sixteen phase II CR patients completed twelve self-paced one-mile walking sessions over a four-week period within a community-based CR programme. Walking velocity, heart rate (HR), and ratings of perceived exertion (RPE) were reported at eight stages throughout the self-paced walks. Results. The study showed a significant increase in walking velocity from week 1 (4.5 km/h) to week 4 (5.1 km/h) of the self-paced walking programme (P < .05). A significantly higher HR was also observed in week 4 (111 ± 13 b·min(-1); ~69% of maximal HR) compared to week 1 (106 ± 14 b·min(-1); ~65% of maximal HR, P < .001). There were no changes in the average RPE across the course of the 4-week self-paced walking programme (P > .05). Conclusion. A self-paced walking programme may elicit an appropriate training stimulus for CR patients when exercising within a diverse topographical environment. Participants completed a one-mile walk within a shorter period of time and at a higher physiological intensity than that elicited at the onset of the programme, despite no observed changes in participants' subjective perception of exertion.
目的。评估在地形多样的户外环境中进行的自定步速步行干预对心脏康复（CR）患者生理和感知指标的影响。方法。16名II期CR患者在基于社区的CR项目中，于四周内完成了12次自定步速的一英里步行训练。在自定步速步行的八个阶段报告步行速度、心率（HR）和自觉用力程度（RPE）。结果。研究表明，自定步速步行训练从第1周（约4.5千米/小时）到第4周（约5.1千米/小时），步行速度显著增加（P < .05）。与第1周（106 ± 14次/分钟；约为最大心率的65%）相比，第4周的HR也显著更高（111 ± 13次/分钟；约为最大心率的69%，P < .oo1）。在为期4周的自定步速步行训练过程中，平均RPE没有变化（P > .05）。结论。当在多样的地形环境中锻炼时，自定步速步行训练可能会为CR患者带来适当的训练刺激。尽管参与者的主观用力感知没有变化，但他们在比训练开始时更短的时间内，以更高的生理强度完成了一英里的步行。
