The August, 1935 issue of Science and Mechanics carried this hilarious article on the "Old Age Rejuvenator Centrifuge" — a technology that whirled the elderly to keep them supple.
"What shall the prophylaxis (prevention) and therapy (treatment) be? How can the effects of this force be mitigated? Lying down relieves the daytime direction of fatiguing pull in the case of the well or slightly ill; but something more than this is needed by the badly-damaged. We suggest periods of centrifugalization. An individual in special need of treatment might rest at night upon a large revolving disc with his head toward the outer rim; the disc should be so beveled as to carry the head at a lower level than the feet; optimum (best) speed to be determined by laboratory experimentation. Such a disc might be large enough to carry ten or twenty patients. This mechanism would facilitate the functions which during the day are inhibited by gravity. Incidentally, certain cardiac (heart) and vascular disabilities might be especially helped. The decompensated heart, with edematous (swollen) and varicose extremities, might respond well."