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  • Title: Six-month combined aerobic and resistance exercise program enhances 6-minute walk test and physical fitness in people with peripheral arterial disease: A pilot study.
    Author: Machado I, Ferreira J, Magalhães C, Sousa P, Dias L, Santarém D, Moreira H, Abrantes C.
    Journal: J Vasc Nurs; 2024 Sep; 42(3):145-153. PubMed ID: 39244325.
    Abstract:
    BACKGROUND: Exercise therapy is a recognized non-pharmacological intervention for peripheral arterial disease (PAD); however, the effects of combined exercise remain under investigation. This study aimed to compare the effects of a 6-month combined supervised exercise program (SUP) with a usual care (UC) approach on walking ability, physical fitness, and peripheral blood flow in people with PAD and claudication. METHODS: Twenty-three male participants (Age=64.1 ± 6.2years and ABI=0.58±0.07) with PAD and claudication were assigned to either the SUP group (n = 10), engaging in structured supervised treadmill walking combined with three resistance exercises, three times a week, or the UC group (n = 13), receiving advice to walk. The primary outcome measure was walking ability, with assessments conducted at baseline (M0), after 3 months (M3), and 6 months (M6). RESULTS: After the 6-month intervention, the SUP group exhibited significant improvements in absolute claudication time (ACT, p = 0.045), maximal walking time (MWT, p = 0.045), maximal walking distance (MWD, p = 0.027), and pause duration (p = 0.045) during the 6-minute walk test (6MWT), when compared to the UC group. Over time, a significant increase in walking speed during the 6MWT (Speed6MWT, p = 0.001) and walking speed without claudication (SpeedNoC, p < 0.001) was found, although no significant differences were found between the groups. The SUP group increased by 0.8 km/h in both Speed6MWT and SpeedNoC, while the UC group increased by 0.3 km/h and 0.6 km/h, respectively. Despite claudication consistently occurring at the same time, the SUP group demonstrated an improved tolerance to pain or a better understanding of pain, enabling them to walk longer distances at higher speeds. A positive effect of SUP was found for chair sit-and-reach test (p = 0.023), percentage of fat mass (p = 0.048), fat-free mass (p = 0.040), and total body water (p = 0.026), suggesting potential benefits attributed to the resistance strength exercises. CONCLUSION: A 6-month combined treadmill and resistance exercise program improved walking ability, walking speed, lower body and lower back flexibility, and body composition in people with PAD and claudication.
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