Physical Activity–Related Obesity Risk Classification Model and All-Cause Mortality

in Journal of Physical Activity and Health
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Background:

This study evaluated a physical activity–related obesity model on mortality.

Methods:

Data from the 1999–2006 NHANES were used (N = 16,077), with follow-up through 2011. Physical activity (PA) was subjectively assessed, with body mass index (BMI) and waist circumference (WC) objectively measured. From these, 12 mutually exclusive groups (G) were evaluated, including: G1: Normal BMI, Normal WC and Active; G2: Normal BMI, Normal WC and Inactive; G3: Normal BMI, High WC and Active; G4: Normal BMI, High WC and Inactive; G5: Overweight BMI, Normal WC and Active; G6: Overweight BMI, Normal WC and Inactive; G7: Overweight BMI, High WC and Active; G8: Overweight BMI, High WC and Inactive; G9: Obese BMI, Normal WC and Active; G10: Obese BMI, Normal WC and Inactive; G11: Obese BMI, High WC and Active; and G12: Obese BMI, High WC and Inactive.

Results:

Compared with G2, the following had a reduced mortality risk: G1, G3, G5, G6, G7, G8, G9, and G11. Compared with G12, the following had a reduced mortality risk: G1, G3, G5, G7, G9, and G11. In each respective group for BMI and WC, the active group had a reduced mortality risk.

Conclusions:

Across all BMI and WC combinations, PA improved mortality risk identification.

The authors are with the Dept of Health, Exercise Science, and Recreation Management, University of Mississippi, University, MS.

Loprinzi (pdloprin@olemiss.edu) is corresponding author.