| Preliminary findings in the heart rate variability and haemorheology response to varied frequency and duration of walking in women 65-74 yr with type 2 diabetes. | |
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MedLine Citation:
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PMID: 22240377 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Heart rate variability (HRV) and haemorheology adaptations to 12 wk of varied-dose treadmill walking were investigated in women aged 65-74 yr with type 2 diabetes. Subjects were randomly allocated into two groups where exercise frequency and session duration were manipulated (Group 1 : 2 × 60 min·wk-1 or Group 2 : 4 × 30 min·wk-1), but intensity and accumulated weekly duration of exercise were consistent between groups (100% gas-exchange threshold; 120 min·wk-1). Twelve weeks of exercise training significantly improved peak oxygen uptake, time to exhaustion, and gas-exchange threshold (p < 0.05), independent of exercise group. Exercise training did not significantly change glycaemic control or body mass. Red blood cell (RBC) aggregation and RBC deformability significantly decreased (p < 0.05) for both groups. No change in HRV was observed for Group 1, whereas several key indicators of HRV were significantly improved in Group 2 (p < 0.05). The present study was the first to report decreased RBC aggregation following an exercise-only intervention and that exercise training improved RBC aggregation without a concomitant improvement in glycaemic control. The accumulated weekly exercise duration may be the most important training component for the prescription of exercise in older women with type 2 diabetes. |
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Authors:
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Michael J Simmonds; Clare L Minahan; Kevin R Serre; Gregory C Gass; Sonya M Marshall-Gradisnik; Luke J Haseler; Surendran Sabapathy |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-3 |
Journal Detail:
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Title: Clinical hemorheology and microcirculation Volume: - ISSN: 1875-8622 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9709206 Medline TA: Clin Hemorheol Microcirc Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Heart Foundation Research Centre, Griffith University, Gold Coast, Australia School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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