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. 2019 Mar 22;10:311. doi: 10.3389/fphys.2019.00311

Figure 2.

Figure 2

(A) The jump training device (sledge jump system, SJS, adapted from Kramer et al., 2017b). The participant is fixed to the sledge with shoulder straps, and his thighs rest on additional straps. The straps are attached to the rails and can slide alongside the rails with minimal friction. The forces generated by the two low-pressure cylinders substitute the gravitational force. Any force between 0 and 1,800 N can be set by altering the pressure of the cylinders. Details about the system can be found elsewhere (Kramer et al., 2010, 2012a,b). (B) Whole-body vibration (WBV) in microgravity (adapted from Kramer et al., 2013). The subject is pulled toward the vibration platform by four springs via four adjustable straps. The straps are adjusted in a way that the springs exert a force that matches the subject’s body weight.