Table 4.

Linear regressions of low ABI (<1.0) on physical performance and fatigability

Outcomes		Low ABI (<1.0) n=39
HABC PPB, score		β	95% CI	p value
Unadjusted		−0.47	[−0.65, −0.29]	<0.001
Model 1		−0.27	[−0.43, −0.11]	0.001
Model 2		−0.26	[−0.42, −0.10]	0.001
RPE, score		β	95% CI	p value
Unadjusted		1.68	[0.83, 2.52]	<0.001
Model 1		1.10	[0.31, 1.90]	0.006
Model 2		1.08	[0.28, 1.88]	0.008
Model 3		0.95	[0.16, 1.74]	0.019

Third tertile is the reference group for all the models: β coefficients are differences compared to third tertile.

Bold font indicates a statistically significant difference compared to third tertile (p-value <0.05).

Model 1: adjusted for age sex race BMI.

Model 2: adjusted for Model 1+ history of congestive heart failure, coronary heart disease, hypertension, diabetes, hypercholesterolemia, smoking, TLAC and height (only time to complete LDCW and poor walking endurance)

Model 3: adjusted for Model 2+ tiredness, low energy.

RPE, Borg rating of perceived exertion (6–20); HABC PPB: health ABC physical performance battery score (0–4).