Barberan-Garcia Anael, Arbillaga-Etxarri Ane, Gimeno-Santos Elena, Rodríguez Diego Agustín, Torralba Yolanda, Roca Josep, Vilaró Jordi
Hospital Clínic de Barcelona, Thorax Clinic Institute, Respiratory Diagnostic Center, Barcelona, Spain.
Respiration. 2015;89(3):221-5. doi: 10.1159/000371356. Epub 2015 Feb 11.
In healthy subjects, Nordic walking (NW) generates higher oxygen uptake (V˙O2) than standard walking at an equal rate of perceived exertion (RPE). The feasibility and positive outcomes of NW in patients with chronic obstructive pulmonary disease (COPD) have been reported.
The aim of the current study is to assess the physiological responses and RPE during NW in COPD patients.
In 15 COPD patients [mean (SD) age 67 (9) years] with a forced expiratory volume in the 1st s of 55% (15)], V˙O2, minute ventilation and heart rate were measured with a portable system during the 6-min walking test (6MWT), incremental shuttle walking test (SWT), 6-min NW on solid ground (6mNWground) and 6-min NW on soft dry beach sand (6mNWsand). The RPE using a modified Borg scale was assessed after each test.
6mNWground and 6mNWsand showed a higher V˙O2 plateau compared with the 6MWT and peak V˙O2 measured during SWT [mean (SD) V˙O2 21 (3), 22 (4), 18 (4) and 19 (5) ml·kg(-1)·min(-1), respectively; p < 0.05 each]. However, no differences in RPE were observed among 6mNWground, 6MWT and SWT [modified Borg scale score for dyspnea 4.2 (2.0), 4.1 (1.8) and 4.3 (1.7), respectively; nonsignificant]. However, RPE in 6mNWsand was significantly higher than in all the other exercise protocols [modified Borg scale score for dyspnea 5.2 (2.2); p < 0.05].
In COPD patients, the use of Nordic poles generates higher V˙O2 than standard walking with no differences in the dyspnea score. The results indicate the potential to enhance community-based training programs in these patients. © 2015 S. Karger AG, Basel.
在健康受试者中，在同等自感用力度（RPE）下，越野行走（NW）比标准行走产生更高的摄氧量（V˙O2）。已有报道称NW对慢性阻塞性肺疾病（COPD）患者具有可行性及积极效果。
本研究旨在评估COPD患者进行NW时的生理反应及RPE。
对15例COPD患者[平均（标准差）年龄67（9）岁，第1秒用力呼气量为55%（15）]，在6分钟步行试验（6MWT）、递增往返步行试验（SWT）、在坚实地面上进行6分钟NW（6mNWground）以及在干燥柔软沙滩上进行6分钟NW（6mNWsand）期间，使用便携式系统测量V˙O2、分钟通气量和心率。每次试验后使用改良的Borg量表评估RPE。
与6MWT及SWT期间测得的峰值V˙O2相比，6mNWground和6mNWsand显示出更高的V˙O2平台期[平均（标准差）V˙O2分别为21（3）、22（4）、18（4）和19（5）ml·kg⁻¹·min⁻¹；各p < 0.05]。然而，在6mNWground、6MWT和SWT之间未观察到RPE的差异[呼吸困难的改良Borg量表评分分别为4.2（2.0）、4.1（1.8）和4.3（1.7）；无显著性差异]。然而，6mNWsand中的RPE显著高于所有其他运动方案[呼吸困难的改良Borg量表评分为5.2（2.2）；p < 0.05]。
在COPD患者中，使用越野杖比标准行走产生更高的V˙O2，且呼吸困难评分无差异。结果表明在这些患者中加强社区培训计划的潜力。© 2015 S. Karger AG，巴塞尔。
