Academic Health Center, School of Nursing, Adult and Gerontological Health Cooperative, University of Minnesota, Minneapolis, MN, USA.
Labor and Delivery/Pregnancy Unit, MHealth Fairview, University of Minnesota Masonic Children's Hospital, Minneapolis, MN, USA.
J Vasc Nurs. 2023 Mar;41(1):1-5. doi: 10.1016/j.jvn.2022.11.002. Epub 2022 Dec 19.
Community-based structured exercise training (CB-SET) programs are beneficial for patients with peripheral artery disease (PAD). However, the impact of lower levels of walking activity accumulated separately from formal exercise is unclear. The aim of this study was to determine the relation of non-exercise walking (NEW) activity with exercise performance in PAD.
This was a post hoc analysis from twenty patients with PAD enrolled in a 12 week CB-SET program using diaries and accelerometry. Formal exercise (3 sessions·week) was detected using patient-reported diary entries that corresponded with accelerometer step data. NEW activity was characterized as steps completed over five days each week, excluding steps achieved during formal exercise sessions. The primary exercise performance outcome was peak walking time (PWT) assessed on a graded treadmill. Secondary performance outcomes included claudication onset time (COT) from the graded treadmill and peak walking distance (PWD) achieved during the six-minute walk test (6MWT). Partial Pearson correlations evaluated the relation of NEW activity (step·week) with exercise performance outcomes using exercise session intensity (step·week) and duration (min·week) as covariates.
NEW activity demonstrated a moderate, positive correlation with change in PWT (r=0.50, p=0.04). Other exercise performance outcomes were not significantly related to NEW activity (COT: r=0.14; 6MWT PWD: r=0.27).
A positive association was demonstrated between NEW activity and PWT following 12 weeks of CB-SET. Interventions to increase physical activity levels outside of formal exercise sessions may be beneficial for patients with PAD.
基于社区的结构化运动训练（CB-SET）计划对周围动脉疾病（PAD）患者有益。然而，从正式运动中分别积累的较低水平的步行活动的影响尚不清楚。本研究旨在确定非运动性步行（NEW）活动与 PAD 患者运动表现的关系。
这是一项对 20 名 PAD 患者进行的 12 周 CB-SET 计划的事后分析，使用日记和加速度计。正式运动（每周 3 次）是通过与加速度计步数数据相对应的患者报告的日记条目来检测的。NEW 活动的特征是每周五天完成的步数，不包括在正式运动期间完成的步数。主要运动表现结果是在分级跑步机上评估的最大步行时间（PWT）。次要表现结果包括分级跑步机上的跛行起始时间（COT）和六分钟步行测试（6MWT）中达到的最大步行距离（PWD）。使用运动会话强度（步/周）和持续时间（分钟/周）作为协变量，偏 Pearson 相关分析评估了 NEW 活动（步/周）与运动表现结果的关系。
NEW 活动与 PWT 的变化呈中度正相关（r=0.50，p=0.04）。其他运动表现结果与 NEW 活动无显著相关性（COT：r=0.14；6MWT PWD：r=0.27）。
在 12 周的 CB-SET 后，NEW 活动与 PWT 之间表现出正相关。在正式运动之外增加身体活动水平的干预措施可能对 PAD 患者有益。
