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Journal of Environmental and Public Health
Volume 2009, Article ID 195285, 5 pages
Clinical Study

Effect of Physical Activity and Obesity on Type 2 Diabetes in a Middle-Aged Population

School of Population Health, University of Queensland, Herston, QLD 4006, Australia

Received 21 February 2009; Revised 14 July 2009; Accepted 13 August 2009

Academic Editor: Ike S. Okosun

Copyright © 2009 Rashid M. Ansari. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. The physical activity has been associated with a reduced risk of type 2 diabetes. The aim of this study was to examine the effect of physical activities such as occupational, household and daily lifestyle activities and obesity on the prevalence of type 2 diabetes in middle-aged population. Methods. All people (n = 2053), aged 45–64 years were selected for this study from the large sample of population-based cross-sectional data collected in the 1990–1994 by National Health Survey of Pakistan. The participants completed in-person interviews at baseline; the overall response rate was 92.6%. The Cox proportional hazards model was used to estimate the risk of developing the type 2 diabetes. Results. Stair climbing was found to be inversely associated with the risk of diabetes and cycling was also associated with a reduced risk of type 2 diabetes ( R R = 0 . 8 2 ; 95% CI 0.68–1.00, 𝑃 = . 0 4 8 ). The relationship between physical activity and reduced risk of diabetes adjusted for age and body mass index was statistically significant only in women ( 𝑃 < . 0 1 ). Conclusions. This study provides an incentive that physical activity in leisure-time exercise or daily activity reduces the risk of type 2 diabetes in a high-risk population.