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- Title
Effect of type 2 diabetes on the dynamic response characteristics of leg vascular conductance during exercise.
- Authors
MacAnaney, Oscar; Reilly, Heather; O'Shea, Donal; Egaña, Mikel; Green, Simon
- Abstract
In this study we tested the hypothesis that type 2 diabetes impairs the dynamic response of leg vascular conductance (LVC) during exercise. LVC (leg blood flow/mean arterial pressure) responses were studied during intermittent contractions of the calf muscle in subjects with type 2 diabetes (n = 9), heavy controls (n = 10) and lean controls (n = 8) using a biexponential function and an estimate of the mean response time (MRT). The time constant of the second phase of LVC was significantly greater in type 2 diabetes (66.4 ± 29.2 s) than the heavy (22.2 ± 13.4 s) and lean (21.8 ± 9.3 s) controls, resulting in a significantly greater MRT in the diabetic group (median [IQR] = 30.7 [24.6—46.5] s versus 16.3 [4.3—23.2] s and 18.4 [13.7—19.3] s). These data support the hypothesis and suggest that a slowed hyperaemic response in the exercising limb might contribute to exercise intolerance in diabetic subjects.
- Publication
Diabetes & Vascular Disease Research, 2011, Vol 8, Issue 1, p12
- ISSN
1479-1641
- Publication type
Article
- DOI
10.1177/1479164110389625