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. 2021 Feb 16;22(4):1937. doi: 10.3390/ijms22041937

Figure 1.

Figure 1

Decline in skeletal muscle function with age (A) Average longitudinal body mass measurements of Ulk1 muscle-specific Ulk1 knockout mice (MKO) mice and littermate controls (LM) controls starting at 12 months of age through 22 months. (B) Average longitudinal in vivo muscle peak torque measurements for 12–22 months of age. (C) Relative force frequency of LM and MKO mice at 12 and 22 months of age. (D) EC50 calculated from longitudinal force frequency measurements at 12 and 22 months of age. All data are presented as mean ± SD n = 10 mice. Main effects are listed where observed.