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. 2012 Feb 3;3(2):95–109. doi: 10.1007/s13539-011-0054-2

Fig. 2.

Fig. 2

Age-related decline in the human soleus muscles H-max to M-max ratio suggesting that advancing age results in a decrease in global spinal excitability. Data were obtained during standing while the muscle was activated at an intensity equal to 15% of its maximum voluntary contraction. Reprinted with permission from [234]