Table 3. Results from unadjusted and adjusted analyses of covariance presenting means (and 95% confidence intervals) of 4-meter gait speed according to body mass index (BMI) categories, stratified by gender.

	Unadjusted	Adjusted for age
Women (n = 159)
a. BMI <20.0 kg/m2 (n = 14)	0.83 [0.61; 1.04]	0.95 [0.74; 1.16]
b. BMI 20.0–24.9 kg/m2 (n = 47)	1.11 [0.99; 1.23]	1.09 [0.98; 1.20]
c. BMI 25.0–29.9 kg/m2 (n = 62)	1.00 [0.90; 1.10]	1.00 [0.91; 1.10]
d. BMI 30.0–34.9 kg/m2 (n = 28)	0.87 [0.72; 1.02]	0.82 [0.67; 0.97]
e. BMI ≥35.0 kg/m2 (n = 8)	0.70 [0.41; 0.98]	0.70 [0.43; 0.98]
P	0.02	<0.001
Men (n = 290)
a. BMI <20.0 kg/m2 (n = 7)	0.83 [0.55; 1.10]	0.85 [0.58; 1.12]
b. BMI 20.0–24.9 kg/m2 (n = 62)	1.10 [1.01; 1.20]	1.13 [1.04; 1.22]
c. BMI 25.0–29.9 kg/m2 (n = 140)	1.16 [1.10; 1.22]	1.16 [1.10; 1.22]
d. BMI 30.0–34.9 kg/m2 (n = 70)	1.11 [1.03; 1.20]	1.11 [1.02; 1.19]
e. BMI ≥35.0 kg/m2 (n = 11)	0.97 [0.75; 1.19]	0.94 [0.73; 1.16]
P	0.08	<0.001