Intensidade de Exercício durante o Teste de Caminhada de 6 Minutos em Pacientes com Doença Arterial Periférica

Abstract

Background: 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.Objectives: To determine whether ground walking exceeds the ventilatory threshold (VT), a recognized marker of exercise intensity, in patients with symptomatic PAD. Methods: 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.Results: 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. Conclusion: 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.

Impacto do diabetes mellitus na capacidade funcional de pacientes com doença arterial periférica / Impact of diabetes mellitus on functional capacity in patients with peripheral arterial disease

“…A distância de claudicação em metros coletada no teste mostra-nos que os pacientes do grupo 2 sentiram dor de claudicação antes do grupo 1, e isso dificultou sua caminhada. Um artigo (18) traz como dado 214±96 para o tempo máximo que o paciente conseguiu caminhar sem dor de claudicação e a caminhada de 6 min completa com 399 ± 67 m, sendo 54% desses indivíduos diabéticos. Esse artigo apresentou n diminuto comparado a este trabalho e sexo feminino predominante.…”

“…Com a realização dos testes para a avaliação da capacidade funcional dos participantes, percebe-se que os indivíduos com DAP e DM associado podem dificultar a avaliação clínica, pois, nos casos de neuropatia diabética, os sintomas da DAP são mascarados (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) . É de grande importância estudar essa doença, já que as doenças cardiovasculares continuam sendo a maior causa de morbimortalidade em países desenvolvidos e emergentes.…”

Relationships Between Physical Activity Metrics of Intensity and Diabetes

“…Physical activity metrics such as cadence and the 6-minute walk test (6MWT) reflect PA intensity 12,13 . Cadence is measured in steps per minute 12 .…”

“…2,11 Physical activity metrics such as cadence and the 6-minute walk test (6MWT) reflect PA intensity. 12,13 Cadence is measured in steps per minute. 12 Walking cadence has a strong relationship with PA and is measured in metabolic equivalents.…”