Fig. 1.  The relationship between normalized acceleromyography adductor pollicis train-of-four (AMG AP TOF) ratio and vital capacity of the lungs and between normalized AMG AP TOF ratio and handgrip strength in 12 volunteers during stable mivacurium blocks. Both vital capacity and handgrip strength decreased significantly with decreasing AMG AP TOF ratio. 95% confidence interval of the slopes (upper-lower limits): vital capacity: 0.01810838–0.01093862 and handgrip strength: 1.0987737–0.6567971.