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Objectively measured physical activity and the subsequent risk of incident dysglycemia : The Australian diabetes, obesity and lifestyle Study (AusDiab)
Ponsonby, Anne-Louise Sun, Cong Ukoumunne, Obioha Pezic, Angela Venn, Alison Shaw, Jonathan Dunstan, David Barr, Elizabeth Blair, Steven Cochrane, Jenny
Ponsonby, Anne-Louise
Sun, Cong
Ukoumunne, Obioha
Pezic, Angela
Venn, Alison
Shaw, Jonathan
Dunstan, David
Barr, Elizabeth
Blair, Steven
Cochrane, Jenny
Abstract
Objective: To investigate pedometer-measured physical activity (PA) in 2000 and change in PA over 5 years with subsequent risk of dysglycemia by 2005. Research design and methods: This prospective cohort study in Tasmania, Australia, analyzed 458 adults with normal glucose tolerance and a mean (SD) age of 49.7 (12.1) years in 2000. Variables assessed in 2000 and 2005 included PA, by pedometer and questionnaire, nutrient intake, and other lifestyle factors. Incident dysglycemia was defined as the development of impaired fasting glucose or impaired glucose tolerance revealed by oral glucose tolerance testing in 2005, without type 2 diabetes. Results: Incident dysglycemia developed in 26 participants during the 5-year period. Higher daily steps in 2000 were independently associated with a lower 5-year risk of incident dysglycemia (adjusted odds ratio [AOR] 0.87 [95% CI 0.77–0.97] per 1,000-step increment). Higher daily steps in 2005, after controlling for baseline steps in 2000 (thus reflecting change in steps over 5 years), were not associated with incident dysglycemia (AOR 1.02 [0.92–1.14]). Higher daily steps in 2000 were also associated with lower fasting blood glucose, but not 2-h plasma glucose by 2005. Further adjustment for BMI or waist circumference did not remove these associations. Conclusions: Among community-dwelling adults, a higher rate of daily steps is associated with a reduced risk of incident dysglycemia. This effect appears to be not fully mediated through reduced adiposity.
Keywords
Date
2011
Type
Journal article
Journal
Diabetes Care
Book
Volume
34
Issue
7
Page Range
1497-1502
Article Number
ACU Department
Mary MacKillop Institute for Health Research
Faculty of Health Sciences
Faculty of Health Sciences
Collections
Relation URI
Source URL
Event URL
Open Access Status
Open access
License
File Access
Controlled