Obesity, Physical Function, and Training Success in Community-Dwelling Nonsarcopenic Old Adults

Table 2

Comparison in baseline function between normal weight, overweight, and obese participants using linear models.

Parameter estimates dependent variable	Parameter	Model 1				Model 2
		B	95% CI		value	B	95% CI		value
Quadriceps strength (N)	Intercept	1050.87	885.163	1216.58	<0.001	1007.37	838.628	1176.11	<0.001
	Normal weight	−34.949	−69.025	−0.874	0.044	−43.145	−77.696	−8.594	0.015
	Overweight	−10.293	−39.264	18.679	0.484	−14.575	−43.537	14.387	0.322
	Obese	Ref.				Ref.
	Age (years)	−8.629	−10.901	−6.358	<0.001	−8.186	−10.472	−5.901	<0.001
	Male^1	143.809	117.445	170.173	<0.001	143.484	117.358	169.610	<0.001
	LTPA^2 (min/week)					0.042	0.004	0.080	0.028
		R^2 = 43.4%				R^2 = 46.1%
Rel. quadriceps str. (N/kg BW)	Intercept	9.713	7.518	11.908	<0.001	9.125	6.891	11.359	<0.001
	Normal weight	1.511	1.060	1.963	<0.001	1.401	0.943	1.858	<0.001
	Overweight	0.921	0.537	1.305	<0.001	0.863	0.480	1.247	<0.001
	Obese	Ref.				Ref.
	Age (years)	−0.068	−0.098	−0.038	<0.001	−0.062	−0.092	−0.032	<0.001
	Male	0.716	0.367	1.065	<0.001	0.711	0.366	1.057	<0.001
	LTPA (min/week)					0.001	<0.001	0.001	0.025
		R^2 = 22.8%				R^2 = 26.1%
Grip strength (lb)	Intercept	108.052	88.780	127.324	<0.001	105.186	85.406	124.966	<0.001
	Normal weight	−0.888	−4.851	3.075	0.659	−1.428	−5.478	2.622	0.488
	Overweight	0.691	−2.678	4.061	0.686	0.409	−2.986	3.804	0.812
	Obese	Ref.				Ref.
	Age (years)	−0.809	−1.073	−0.545	<0.001	−0.780	−1.048	−0.512	<0.001
	Male	32.322	29.255	35.388	<0.001	32.300	29.238	35.363	<0.001
	LTPA (min/week)					0.003	−0.002	0.007	0.216
		R^2 = 68.1%				R^2 = 69.1%
6MWD (m)	Intercept	968.333	860.340	1076.33	<0.001	912.846	806.580	1019.11	<0.001
	Normal weight	62.965	40.758	85.173	<0.001	52.512	30.753	74.271	<0.001
	Overweight	45.106	26.226	63.987	<0.001	39.644	21.405	57.883	<0.001
	Obese	Ref.				Ref.
	Age (years)	−7.573	−9.053	−6.093	<0.001	−7.008	−8.447	−5.569	<0.001
	Male	30.925	13.744	48.107	<0.001	30.511	14.058	46.964	<0.001
	LTPA (min/week)					0.054	0.030	0.077	<0.001
		R^2 = 36.5%				R^2 = 44.0%
TUG (sec)	Intercept	−6.690	−9.501	−3.879	<0.001	−5.655	−8.485	−2.825	<0.001
	Normal weight	−1.533	−2.111	−0.955	<0.001	−1.338	−1.917	−0.758	<0.001
	Overweight	−0.529	−1.021	−0.038	0.035	−0.427	−0.913	0.058	0.084
	Obese	Ref.				Ref.
	Age (years)	0.208	0.170	0.247	<0.001	0.198	0.159	0.236	<0.001
	Male	−0.483	−0.930	−0.036	0.034	−0.475	−0.913	−0.037	0.034
	LTPA (min/week)					−0.001	−0.002	<0.001	0.002
		R^2 = 32.2%				R^2 = 41.5%

Linear models (general linear model–univariate in SPSS) to investigate baseline differences in physical function and muscular strength between the groups. Model 1: intercept, BMI categories, age, and gender; model 2: additionally LTPA. ¹as compared to female; ²LTPA, leisure time physical activity.