Aging results in the accumulation of detrimental biological changes over time. The reduction of muscle mass and strength (sarcopenia) is one of the major causes of disability in older persons (Enoka et al., 2003; Lauretani et al., 2003; Delmonico et al., 2009; Clark and Manini, 2012), which affects gait speed, balance, and the command of fine motor skills (Fried et al., 2004; Sorond et al., 2015). The deterioration of motor functions with advancing age therefore increases the risk of injury and age-associated diseases such as ALS/FTD (Spiller et al., 2016b; Niccoli et al., 2017).