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![Equipment used during training and testing. (a) MP3-player (DIFRNCE... | Download Scientific Diagram Equipment used during training and testing. (a) MP3-player (DIFRNCE... | Download Scientific Diagram](https://www.researchgate.net/publication/261184046/figure/fig1/AS:302112547328054@1449040652852/Equipment-used-during-training-and-testing-a-MP3-player-DIFRNCE-MP1850-b-GaitRite.png)