that, in confining babies much of the time to strollers, high chairs, playpens, and walkers, muscle development can be inhibited

that, in their confinement much of the time to strollers, high chairs, playpens, and walkers, muscle development can be inhibited in babies

that confining babies much of the time to strollers, high chairs, playpens, and walkers can inhibit muscle development

that babies, if confined much of the time to strollers, high chairs, playpens, and walkers can inhibit muscle development

that strollers, high chairs, playpens, and walkers can, if babies are confined to the much of the time, result in muscle development being inhibited