Fig. 3From: Human limb skeletal muscle wasting and architectural remodeling during five to ten days intubation and ventilation in critical care – an observational study using ultrasoundPennation angle of gastrocnemius on day 1 and change in pennation angle on day 10 Correlation tested using Pearson’s product–moment correlation coefficient. A significant negative relationship was observed between pennation angle on admission and the change in pennation angle size on day 10Back to article page