I don't think that . There is evidence for halting the aging process at this time. But, i wouldn't be surprised if if was advertised for this purpose. Approved uses for hyperbaric oxygen include: decompression sickness, gas embolism (arterial), recalcitrant soft tissue infections ; osteomyelitis, gangrene, carbon monoxide poisoning, wounds or skin grafts/flaps that aren't healing w standard tx, crush injuries, thermal.
Hyperbaric medicine. There is no evidence for that this condition is helped nor hindered by hyperbaric treatments. I am afraid that aging is subject to the humor of the tincture of time.