Fig. 2From: Age-related changes in the activation timing of postural muscles to the prime mover muscle for bilateral arm flexion during standingAge-related changes in the percentage of trials of postural muscles presenting burst activation (activation rate). RA, rectus abdominis; ES, erector spinae; RF, rectus femoris; BF, biceps femoris; TA, tibialis anterior; GcM, gastrocnemius medialis; SOL, soleus. Asterisks indicate significant differences relative to 100% rate. *p < 0.05, ***p < 0.001. Daggers indicate significant differences relative to adults. †p < 0.05, ††p < 0.01, †††p < 0.001Back to article page