Significant associations were found between low ventilatory capacity and slow gait speed ( adjusted odds ratio ( aOR ) = 1.41 , 95 % confidence interval ( CI ) = 1.03-1 .92 ) , between respiratory muscle weakness and moderate to severe mobility impairment ( aOR = 1.42 , 95 % CI = 1.03-1 .95 ) , and between dyspnea and high sedentary time ( aOR = 1.98 , 95 % CI = 1.28-3 .06 ) and slow gait speed ( aOR = 1.70 , 95 % CI = 1.22-2 .38 ) .