Regular walking improves plasma protein concentrations that promote blood hyperviscosity in women 65-74 yr with type 2 diabetes

Michael J. Simmonds, Surendran Sabapathy, Kevin R. Serre, Luke J. Haseler, Gregory C. Gass, Sonya M. Marshall-Gradisnik, Clare L. Minahan

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3 Citations (Scopus)

Abstract

BACKGROUND: The purpose of the present study was to investigate the effects of regular treadmill walking on plasma factors that increase low-shear blood viscosity and red blood cell aggregation in older women with type 2 diabetes.

METHODS: Eighteen women with type 2 diabetes (age: 69±3 yr; body mass index: 30.5±5.0 kg⋅m-2) performed 12-wk of 120 min⋅wk-1 of supervised treadmill walking at an intensity equivalent to the gas-exchange threshold. Peak exercise values, anthropometry and blood indices of diabetic status, markers of inflammation, and plasma fibrinogen were analysed during a 6-wk pre-training 'control' period, and then after 6 and 12-wk of regular walking.

RESULTS: Regular walking significantly increased peak oxygen uptake (p = 0.01). Body mass, waist to hip ratio, and glycaemic control did not change. Systolic and diastolic blood pressures decreased by 8.5% (p < 0.01) and 7.2% (p < 0.01) respectively, cholesterol to high-density lipoprotein (HDL) ratio decreased by 9.6% (p = 0.01), and HDL concentration significantly increased (p = 0.01). While 12 wk of regular walking did not significantly alter plasma concentrations of interleukin-6 (IL-6), tumour necrosis factor-α, or C-reactive protein, plasma fibrinogen concentration decreased by 6.9% (p < 0.01) and plasma interleukin-10 (IL-10) concentration increased from 1.15±0.32 to 1.62±0.22 mmol⋅L-1 (p < 0.04).

CONCLUSIONS: Improved plasma inflammatory profile and decreased plasma fibrinogen concentration is induced by regular walking, independent of glycaemic control. These factors may mediate the improved haemorheology associated with exercise training in metabolic disorders.

Original languageEnglish
Pages (from-to)189-198
Number of pages10
JournalClinical Hemorheology and Microcirculation
Volume64
Issue number2
DOIs
Publication statusPublished - 25 Nov 2016

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  • Student Theses

    Responses in Vascular Function to Exercise in Women Aged 65-74 Years with Type 2 Diabetes

    Author: Serre, K., 12 Oct 2013

    Supervisor: Gass, G. (Supervisor) & Gray, B. (Supervisor)

    Student thesis: Doctoral Thesis

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    Cite this

    Simmonds, M. J., Sabapathy, S., Serre, K. R., Haseler, L. J., Gass, G. C., Marshall-Gradisnik, S. M., & Minahan, C. L. (2016). Regular walking improves plasma protein concentrations that promote blood hyperviscosity in women 65-74 yr with type 2 diabetes. Clinical Hemorheology and Microcirculation, 64(2), 189-198. https://doi.org/10.3233/CH-162061