NASA Research[2]
• …for similar levels of heart rate and oxygen consumption, the magnitude of the bio mechanical stimuli is greater with jumping on a trampoline than with running, a finding that might help identify acceleration parameters needed for the design of remedial procedures to avert deconditioning in persons exposed to weightlessness.
• The external work output at equivalent levels of oxygen uptake were significantly greater while trampolining than running. The greatest difference was about 68%.
• While trampolining, as long as the G-force remained below 4-G’s, the ratio of oxygen consumption compared to biomechanical conditioning was sometimes more than twice as efficient as treadmill running.
• The G-force measured at the ankle was always more than twice the G-force measured at the back and forehead while running on a treadmill.…While jumping on a trampoline, the G-force was almost the same at all three points, (ankle, back, forehead) and well below the rupture threshold of a normal healthy individual.
• …averting the deconditioning that occurs during the immobilization of bed rest or space flight, due to a lack of gravireceptor stimulation (in addition to other factors), requires an acceleration profile that can be delivered at a relatively low metabolic cost….for equivalent metabolic cost, and acceleration profile from jumping [on a trampoline] will provide greater stimuli to gravireceptors.
