Table 3.

Gait Speed Estimates for BMI and Difference in Gait Speed by 25-Year Trajectory Groups Compared With the Group that Maintained Normal BMI

25-Year BMI Trajectory Group				Visit 5 Gait Speed	Adjusted Differences
Group	Baseline BMI	0–10 Years	10–25 Years		Estimate	95% CI	p Value
1	“Normal” < 25 kg/m2n = 5,187 (33%)	Loss > 2.5%	Loss > 2.5%	90.0	−6.93	−15.49, 1.62	.112
2			Maintain	93.0	−3.89	−14.33, 6.54	.465
3			Gain > 2.5%	94.4	−2.46	−11.19, 6.27	.581
4		Maintain	Loss > 2.5%	95.1	−1.82	−7.58, 3.93	.535
5			Maintain	96.9	Reference
6			Gain > 2.5%	95.2	−1.74	−7.55, 4.08	.559
7		Gain > 2.5%	Loss > 2.5%	93.5	−3.38	−8.51, 1.76	.197
8			Maintain	94.6	−2.35	−7.52, 2.81	.372
9			Gain > 2.5%	94.1	−2.83	−7.80, 2.13	.263
10	“Overweight” 25–30 kg/m2n = 6,172 (39%)	Loss > 2.5%	Loss > 2.5%	88.4	−8.49	−16.44, −0.53	.037
11			Maintain	92.9	−3.99	−11.31, 3.33	.285
12			Gain > 2.5%	88.2	−8.67	−17.09, −0.26	.043
13		Maintain	Loss > 2.5%	89.7	−7.19	−12.93, −1.45	.014
14			Maintain	88.5	−8.44	−14.33, −2.54	.005
15			Gain > 2.5%	89.5	−7.44	−13.06, −1.82	.009
16		Gain > 2.5%	Loss > 2.5%	90.6	−6.32	−11.32, −1.32	.013
17			Maintain	89.2	−7.73	−12.79, −2.68	.003
18			Gain > 2.5%	89.2	−7.66	−12.59, −2.73	.002
19	“Obese” ≥ 30 kg/m2n = 4,336 (28%)	Loss > 2.5%	Loss > 2.5%	83.3	−13.62	−21.10, −6.14	<.001
20			Maintain	90.6	−6.32	−14.85, 2.20	.146
21			Gain > 2.5%	80.8	−16.12	−27.92, −4.32	.007
22		Maintain	Loss > 2.5%	82.5	−14.43	−20.49, −8.37	<.001
23			Maintain	81.4	−15.53	−22.66, −8.40	<.001
24			Gain > 2.5%	82.6	−14.27	−21.42, −7.12	<.001
25		Gain > 2.5%	Loss > 2.5%	81.5	−15.36	−20.68, −10.05	<.001
26			Maintain	83.4	−13.47	−19.08, −7.86	<.001
27			Gain > 2.5%	80.6	−16.26	−21.77, −10.74	<.001

Note: BMI = body mass index; CI = confidence interval. Values in bold represent participants who maintained a BMI within 2.5% of the previous BMI.