Table 1.

The effects of obesity on measure from the UCM analysis, on performance during cued walking task and on measures of functional mobility.

		OB (N=21)	NW (N=25)	p-value; F-value (df)	d
	Age (years)	72.0 (8.5)	68.0 (6.0)	0.06	0.59
	BMI (kg/m2)	33.7 (5.6)	23.1 (2.1)	<0.001	3.14
	Sex (male/female)	9/12	12/13	0.72	0.10
UCM measures	Vz baseline	1.35±0.33 [1.36±0.34]	1.30±0.33 [1.29±0.27]	group x task: 0.71; 0.15 (1,43)	0.12
	Vz cue	1.71±0.14 [1.76±0.34]	1.35±0.29 [1.58±0.21]	group: 0.43; 0.64 (1,43)	0.24
	log VUCM baseline	−7.80±0.51 [−7.74±0.58]	−7.88±0.50 [−7.92±0.37]	group x task: 0.67; 0.19 (1,43)	0.13
	log VUCM cue	−7.53±0.46 [−7.56±0.42]	−7.68±0.46 [−7.65±0.43]	group: 0.39; 0.75 (1,43)	0.25
	log VORT baseline	−8.60±0.71 [−8.58±0.72]	−8.50±0.70 [−8.51±0.58]	group x task: 0.98; 0.001 (1,43)	0.01
	log VORT cue	−9.11±0.65 [−9.22±0.73]	−9.02±0.65 [−8.93±0.54]	group: 0.66; 0.20 (1,43)	0.14
	log VTOT baseline	−7.87±0.50 [−7.81±0.47]	−7.94±0.50 [−7.98±0.47]	group x task: 0.63; 0.24 (1,43)	0.15
	log VTOT cue	−7.64±0.46 [−7.67±0.43]	−7.79±0.46 [−7.77±0.43]	group: 0.42; 0.65 (1,43)	0.24
Performance measures	Accuracy (%)	94.6 (8.0)	95.6 (12.7)	0.77	0.09
	SSV (m/s)	0.76±0.20	1.00±0.22	0.001	1.06
	SW baseline (mm)	150.5±39.2 [162.0±43.9]	126.5±38.8 [116.9±38.7]	group x task: 0.37; 0.82 (1,43)	0.27
	SW cue (mm)	144.0±36.1 [153.4±40.0]	115.4±35.7 [107.5±34.2]	group: 0.03; 5.21 (1,43)	0.69
	Log SWV baseline	3.25±0.37 [3.19±0.39]	3.32±0.36 [3.37±0.31]	group x task: 0.43; 0.63 (1,43)	0.24
	Log SWV cue	3.05±0.38 [3.00±0.43]	3.02±0.38 [3.06±0.28]	group: 0.80; 0.06 (1,43)	0.08
	SL baseline (mm)	430.6±45.8 [386.6±86.7]	433.9±45.3 [470.9±87.5]	group x task: 0.09; 3.03 (1,43) group: 0.58;0.31 (1,43) [<0.01; 11.58 (1,44)]	0.53 0.17 [1.03]
	SL cue (mm)	432.5±54.1 [390.0±90.7]	446.4±53.5 [482.0±87.2]
	Log SLV baseline	3.58±0.40 [3.49±0.29]	3.39±0.40 [3.50±0.37]	group x task: <0.01*; 10.19 (1,43) [0.54; 0.38 (1,44)] group: 0.77; 0.09 (1,43)	0.96 [0.19] 0.09
	Log SLV cue (mm)	3.41±0.34 [3.51±0.50]	3.55±0.34 [3.44±0.28]
Function	10 MW (m/s)	1.71±0.41	1.99±0.27	0.01	0.79
	TUG (s)	9.60 (2.41)	7.52 (1.04)	0.001	1.07
	4SS (s)	8.88 (3.38)	7.94 (2.83)	0.03	0.66
	SLS (s)	10.90 (26.39)	30.00 (3.66)	0.001	1.00
	F8W (s)	8.32 (1.27)	6.66 (1.58)	<0.01	1.09

Descriptive data are presented as either mean± standard deviation for normally-distributed variables or median (interquartile range) for non-normally distributed variables. Descriptive data is shown for speed adjusted values with raw values in square brackets, except for accuracy, SSV and all functional measures which are not adjusted. All p-values and Cohen’s d values are shown for adjusted data except when statistical findings differed between adjusted and unadjusted data (i.e. p-value <0.05 for only one), in which case p-values and Cohen’s d for unadjusted data are shown in square brackets.

^*NW significantly increase SLV (p=0.15; d = 0.77); OB significantly decrease SLV (p=0.03; d = 0.68)