Table 3. Relationship between atrial fibrillation and exercise capacity measured by peak VO₂.

Model		Linear regression analysis (peak VO₂)
	Sample size	Estimated difference between AF and SR (mL/kg/min)	95%CI	p-value
Unadjusted	202	−1.2	−2.0 to −0.3	0.008
Adjusted for age/sex	202	−0.9	−1.7 to −0.1	0.03
Adjusted for	199	−0.9	−1.8 to −0.1	0.03
age/sex/EF
Adjusted for	199	−1.0	−1.9 to −0.2	0.02
age/sex/EF and
exercise modality^*
Adjusted for age/ sex/
chronotropic index
Astrand formula	200	−1.2	−2.2 to −0.3	0.01
Brawner formula	200	−1.2	−2.2 to −0.2	0.02

CI, confidence interval; EF, ejection traction.

Bicycle vs. treadmill

Table 3. Relationship between atrial fibrillation and exercise capacity measured by peak VO2.