Wikipedia lists VO2 max levels for the average young untrained male of about liters/minute or 45 ml/min/kg. In comparison, world class male endurance athletes in sports such as cycling and cross-country skiing typically achieved scores in excess of 80 ml/kg/min, and occasionally a few may exceed 90 ml/kg/min. The average young untrained female will score about liters/minute or 38 ml/min/kg compared to world class female endurance athletes which a few may exceed 70 ml/kg/min. See also some VO2max results for athletes for specific examples for a range of sports.
In electrodynamic suspension (EDS), both the guideway and the train exert a magnetic field, and the train is levitated by the repulsive and attractive force between these magnetic fields.  In some configurations, the train can be levitated only by repulsive force. In the early stages of maglev development at the Miyazaki test track, a purely repulsive system was used instead of the later repulsive and attractive EDS system.  The magnetic field is produced either by superconducting magnets (as in JR–Maglev) or by an array of permanent magnets (as in Inductrack ). The repulsive and attractive force in the track is created by an induced magnetic field in wires or other conducting strips in the track. A major advantage of EDS maglev systems is that they are dynamically stable – changes in distance between the track and the magnets creates strong forces to return the system to its original position.  In addition, the attractive force varies in the opposite manner, providing the same adjustment effects. No active feedback control is needed.