Influence of peripheral arterial disease and supervised walking on heart rate variability

Leicht, Anthony S., Crowther, Robert G., and Golledge, Jonathan (2011) Influence of peripheral arterial disease and supervised walking on heart rate variability. Journal of Vascular Surgery, 54 (5). pp. 1352-1359.

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Objective: To examine the influence of peripheral arterial disease (PAD) on heart rate variability (HRV) in patients, and to examine the influence of an intense long-term (12 months) exercise program on HRV in PAD patients.

Methods: This study involved ambulatory patients attending a local hospital and university center. Participants were twenty-five patients with diagnosed PAD and intermittent claudication and 24 healthy, age-matched adults. Interventions involved random allocation of PAD patients to 12 months of conservative medical treatment (Conservative) or medical treatment with supervised treadmill walking (Exercise). The main outcome measures were time- and frequency-domain, nonlinear HRV measures during supine rest, and maximal walking capacity prior to and following the intervention.

Results: Despite significantly worse walking capacity (285 ± 190 m vs 941 ± 336 m; P < .05), PAD patients exhibited similar resting HRV to healthy adults. At the 12-month follow-up, Exercise patients exhibited a significantly greater improvement in walking capacity (183% ± 185% vs 57% ± 135%; P = .03) with similar small nonsignificant changes in HRV compared with Conservative patients.

Conclusions: The current study demonstrated that PAD patients exhibited similar resting HRV to healthy adults with 12 months of intense supervised walking producing similar HRV changes to that of conservative medical treatment. The greater walking capacity of healthy adults and PAD patients following supervised exercise does not appear to be associated with enhanced HRV.

Item ID: 19121
Item Type: Article (Research - C1)
ISSN: 1097-6809
Funders: NHMRC
Date Deposited: 03 Nov 2011 07:16
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1106 Human Movement and Sports Science > 110602 Exercise Physiology @ 70%
11 MEDICAL AND HEALTH SCIENCES > 1102 Cardiovascular Medicine and Haematology > 110201 Cardiology (incl Cardiovascular Diseases) @ 30%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920103 Cardiovascular System and Diseases @ 100%
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