For the first time, the power output of an electromagnetic magnetic levitation vibration energy harvesterwas studied when placed on 10 human participants while walking and running on a treadmill from2 mph (3.2 km/h) to up to 7 mph (11.3 km/h). The power generated from the device when participantswalked at 3 mph (4.8 km/h) averaged 71 W. When running at 6 mph, the power increased to 342 W.The testing on participants revealed that due to unique gaits and body structure, acceleration spectrumand damping can vary significantly between participants. Taller participants had a lower step frequencyand therefore lower frequency acceleration content, signifying that a single design may not be optimalfor all participants. Additionally, the estimated damping force varied largely between participants, from3 to 8 mN. To minimize the effects of damping, the paper studies the effect of angle of attachment anddamping reduction techniques using low friction materials and a guide rail system, which improve poweroutput by over 50% when compared to the sub-optimal design.