Farah Breno Quintella, Ritti-Dias Raphael Mendes, Montgomery Polly, Cucato Gabriel Grizzo, Gardner Andrew
Universidade Federal Rural de Pernambuco, Recife, PE - Brasil.
Universidade Nove de Julho - Programa de Pós-Graduação em Ciências da Reabilitação, São Paulo, SP - Brasil.
Arq Bras Cardiol. 2020 May-Jun;114(3):486-492. doi: 10.36660/abc.20190053.
Non-supervised ground walking has been recommended for patients with symptomatic peripheral artery disease (PAD). However, the magnitude of the effort required by this activity and the characteristics of patients whose ground walking is more intense are unclear.
To determine whether ground walking exceeds the ventilatory threshold (VT), a recognized marker of exercise intensity, in patients with symptomatic PAD.
Seventy patients (61.4% male and aged 40 to 85 years old) with symptomatic PAD were recruited. Patients performed a graded treadmill test for VT determination. Then, they were submitted to a 6-minute walk test so the achievement of VT during ground ambulation could be identified. Multiple logistic regression was conducted to identify predictors of VT achievement during the 6-minute walk test. The significance level was set at p < 0.05 for all analyses.
Sixty percent of patients achieved VT during the 6-minute walk test. Women (OR = 0.18 and 95%CI = 0.05 to 0.64) and patients with higher cardiorespiratory fitness (OR = 0.56 and 95%CI = 0.40 to 0.77) were less likely to achieve VT during ground walking compared to men and patients with lower cardiorespiratory fitness, respectively.
More than half of patients with symptomatic PAD achieved VT during the 6-minute walk test. Women and patients with higher cardiorespiratory fitness are less likely to achieve VT during the 6-minute walk test, which indicates that ground walking may be more intense for this group. This should be considered when prescribing ground walking exercise for these patients. (Arq Bras Cardiol. 2020; 114(3):486-492).
对于有症状的外周动脉疾病（PAD）患者，推荐进行无监督的地面行走。然而，这项活动所需的努力程度以及地面行走强度较大的患者特征尚不清楚。
确定有症状的PAD患者的地面行走是否超过通气阈值（VT），这是一个公认的运动强度指标。
招募了70例有症状的PAD患者（男性占61.4%，年龄40至85岁）。患者进行分级平板运动试验以确定VT。然后，他们接受6分钟步行试验，以便确定地面行走期间VT的达成情况。进行多因素逻辑回归以确定6分钟步行试验期间VT达成的预测因素。所有分析的显著性水平设定为p < 0.05。
60%的患者在6分钟步行试验期间达到了VT。与男性和心肺适能较低的患者相比，女性（OR = 0.18，95%CI = 0.05至0.64）和心肺适能较高的患者（OR = 0.56，95%CI = 0.40至0.77）在地面行走期间达到VT的可能性较小。
超过一半的有症状的PAD患者在6分钟步行试验期间达到了VT。女性和心肺适能较高的患者在6分钟步行试验期间达到VT的可能性较小，这表明地面行走对该组患者可能更剧烈。在为这些患者开具地面行走运动处方时应考虑到这一点。（《巴西心脏病学杂志》。2020年；114(3):486 - 492）
