Table 3.

Prevalence ratios (PR) and 95% confidence intervals of functional limitation and ADL/IADLs impairment by physical activity categories and gender, NHANES 2005–2010

Physically active			Non active
	Functional limitation	ADL/IADLs impairment	Functional limitation	ADL/IADLs impairment
	PR (95% CI)	PR (95% CI)	PR (95% CI)	PR (95% CI)
Total sample
Model 1*
Normal	Reference	Reference	Reference	Reference
Overweight	1.32 (1.05–1.64)	0.95 (0.66–1.36)	1.26 (1.00–1.58)	0.96 (0.74–1.26)
Obese	2.52 (1.85–3.43)	1.38 (0.86–2.19)	2.12 (1.74–2.58)	1.31 (1.01–1.69)
Model 2╪
Normal	Reference	Reference	Reference	Reference
Overweight	1.47 (1.17–1.85)	0.92 (0.64–1.34)	1.25 (0.97–1.62)	0.84 (0.62–1.13)
Obese	2.71 (2.00–3.67)	1.16 (0.77–1.74)	1.99 (1.58–2.50)	1.03 (0.79–1.34)
Women
Model 1*
Normal	Reference	Reference	Reference	Reference
Overweight	1.74 (1.24–2.43)	1.65 (0.94–2.89)	1.43 (1.05–1.94)	0.87 (0.63–1.20)
Obese	4.13 (2.71–6.30)	2.39 (1.99–4.79)	2.48 (1.82–3.38)	1.40 (1.03–1.92)
Model 2╪
Normal	Reference	Reference	Reference	Reference
Overweight	1.82 (1.26–2.63)	1.72 (1.01–2.93)	1.374 (0.97–1.94)	0.77 (0.53–1.13)
Obese	3.96 (2.53–6.21)	1.86 (0.97–3.56)	2.42 (1.65–3.56)	1.16 (0.81–1.65)
Men
Model 1*
Normal	Reference	Reference	Reference	Reference
Overweight	1.06 (0.74–1.53)	0.54 (0.32–0.93)	1.13 (0.80–1.61)	1.08 (0.69–1.68)
Obese	1.59 (1.04–2.44)	0.73 (0.42–1.29)	1.76 (1.23–2.52)	1.17 (0.81–1.69)
Model 2╪
Normal	Reference	Reference	Reference	Reference
Overweight	1.06 (0.75–1.49)	0.49 (0.29–0.84)	1.03 (0.69–1.55)	0.90 (0.56–1.46)
Obese	1.64 (1.06–2.54)	0.67 (0.41–1.06)	1.42 (0.91–2.23)	0.87 (0.59–1.28)

^*Model 1 is unadjusted

^╪Model 2 is adjusted for education, age and comorbidity