Bed rest promotes reductions in walking speed, functional parameters, and aerobic fitness in older, healthy adults.
Coker RH, Hays NP, Williams RH, Wolfe RR, Evans WJ. Bed rest promotes reductions in walking speed, functional parameters, and aerobic fitness in older, healthy adults. J Gerontol A Biol Sci Med Sci. 2015 Jan; 70(1):91-6.