Sitting time is negatively related to microvascular endothelium-dependent function in rheumatoid arthritis
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In: Microvascular Research, Vol. 117, 05.2018, p. 57-60.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Sitting time is negatively related to microvascular endothelium-dependent function in rheumatoid arthritis
AU - Fenton, Sally A.M.
AU - Sandoo, Aamer
AU - Metsios, George S
AU - Duda, J.L.
AU - Kitas, George D.
AU - Veldhuijzen van Zanten, Jet J. C. S.
PY - 2018/5
Y1 - 2018/5
N2 - BackgroundSedentary behaviour is linked to increased cardiovascular disease risk in Rheumatoid Arthritis (RA), but the biological processes underlying this relationship are not understood.ObjectivesTo investigate the cross-sectional associations of habitual sedentary behaviour, with endothelial function in RA.MethodsSixty-eight RA patients (Mage = 55 ± 12 years) underwent Laser Doppler Imaging with iontophoresis, to assess microvascular endothelium-dependent (acetylcholine, ACh) and endothelium-independent (sodium nitroprusside, SNP) function. Large-vessel endothelium-dependent and endothelium-independent functions were measured via flow-mediated dilation (FMD) and glyceryl trinitrate dilation (GTN), respectively. Habitual sedentary behaviour (hours/week sitting) was self-reported (International Physical Activity Questionnaire).ResultsRegressions revealed sitting time significantly negatively predicted microvascular endothelium-dependent function (ACh, unstandardizedβ = −3.25, p = .02, 95% CI [−6.07, −.42], R2 = 0.06), but did not associate with other endothelial function outcomes (SNP, FMD, GTN).ConclusionHabitual sedentary behaviour (sitting time) appears to be adversely linked to microvascular endothelium-dependent function among people living with RA.
AB - BackgroundSedentary behaviour is linked to increased cardiovascular disease risk in Rheumatoid Arthritis (RA), but the biological processes underlying this relationship are not understood.ObjectivesTo investigate the cross-sectional associations of habitual sedentary behaviour, with endothelial function in RA.MethodsSixty-eight RA patients (Mage = 55 ± 12 years) underwent Laser Doppler Imaging with iontophoresis, to assess microvascular endothelium-dependent (acetylcholine, ACh) and endothelium-independent (sodium nitroprusside, SNP) function. Large-vessel endothelium-dependent and endothelium-independent functions were measured via flow-mediated dilation (FMD) and glyceryl trinitrate dilation (GTN), respectively. Habitual sedentary behaviour (hours/week sitting) was self-reported (International Physical Activity Questionnaire).ResultsRegressions revealed sitting time significantly negatively predicted microvascular endothelium-dependent function (ACh, unstandardizedβ = −3.25, p = .02, 95% CI [−6.07, −.42], R2 = 0.06), but did not associate with other endothelial function outcomes (SNP, FMD, GTN).ConclusionHabitual sedentary behaviour (sitting time) appears to be adversely linked to microvascular endothelium-dependent function among people living with RA.
U2 - 10.1016/j.mvr.2018.01.005
DO - 10.1016/j.mvr.2018.01.005
M3 - Article
VL - 117
SP - 57
EP - 60
JO - Microvascular Research
JF - Microvascular Research
SN - 0026-2862
ER -