In mouse and miniature-pig experiments, controlled shinbone loading triggered bone cells to release protective signals into the blood and was associated with longer survival and less brain damage after injury. The preclinical finding has not been tested in people.
Researchers compressed mouse tibias 300 times per session, five days a week, then extended the experiments to miniature pigs. Disabling the bone-cell sensor PIEZO1 removed the same benefits; serum from loaded mice also reduced neuron loss when transferred to injured mice, supporting a blood-borne signaling mechanism.
All animals studied were male, and each pig group contained six animals. The study did not establish optimal loading, timing or long-term safety, and its findings do not justify compressing a person's leg after a head injury.
