Abstract
BACKGROUND: Resistance training has been used for the treatment of patients with peripheral artery disease (PAD). However, cardiovascular responses during this type of exercise have not been fully elucidated in these patients. OBJECTIVES: To analyze the cardiovascular responses during resistance exercise and to verify whether there are any correlations between these responses and disease severity or blood pressure levels in patients with PAD. METHODS: Seventeen PAD patients performed one set of 10 repetitions of knee extension exercise with an intensity of 50% of one repetition maximum. The responses of systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) were continuously monitored using the finger photoplethysmography technique. The rate-pressure product (RPP) was obtained by multiplication of SBP and HR. RESULTS: During the resistance exercises there were significant increases in SBP (126 ± 14 vs. 184 ± 20 mmHg, p<0.001), DBP (68 ± 8 vs. 104 ± 14 mmHg, p<0.001), HR (76 ± 18 vs. 104 ± 30 bpm, p<0.001) and RPP (9523 ± 2115 vs. 19103 ± 6098 mmHg x bpm, p<0.001). A negative correlation was observed between relative change (Δ) in SBP and SBP at rest (r =-0.549, p=0.022). On the other hand, there was no relationship between Δ SBP and the ankle-brachial index (r=0.076, p=0.771). CONCLUSION: Increases in cardiovascular variables were observed during resistance exercise in PAD patients. The highest increases occurred in patients with lower SBP levels at resting.
Highlights
Peripheral artery disease (PAD) describes the structural and functional dysfunctions that affect arteries that supply the peripheral regions of the body, primarily the lower limbs.[1]
The results demonstrated an accentuated increase in systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR) and rate-pressure product (RPP) during resistance exercise and show that these changes are not related to disease severity
The responses of arterial blood pressure measurements to resistance exercise were inversely proportional to the results for arterial blood pressure at rest
Summary
Peripheral artery disease (PAD) describes the structural and functional dysfunctions that affect arteries that supply the peripheral regions of the body, primarily the lower limbs.[1]. Supervised physical exercise is recommended as a first line treatment for patients with PAD.[8] resistance training has been shown to increase functional capacity and quality of life in patients with PAD,[9,10] and provokes acute reductions in arterial blood pressure.[11] It is relevant to determine these patients’ cardiovascular responses and the cardiovascular risk involved during this type of exercise. Resistance training has been used for the treatment of patients with peripheral artery disease (PAD). Objectives: To analyze the cardiovascular responses during resistance exercise and to verify whether there are any correlations between these responses and disease severity or blood pressure levels in patients with PAD.
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