Effects of WB-EMS in Runners.

The subjects will be randomly distributed into 3 experimental groups: training with basic global electrostimulation (WB-EMS-SRT), training with specific global electrostimulation for runners (WB-EMS-WT) and control group (CG). Initially and at the end of the intervention period, which will consist of six weeks, the subjects will undergo a series of tests: (1) Maximum incremental effort test in tapestry to exhaustion to determine cardiorespiratory capacity (VO2max) and thresholds (aerobic and anaerobic). (2) Submaximal carpet test at constant speed to determine race economy (EC). (3) Lower train power test (CMJ and Abalakov). (4) Weight, size and waist circumference. The aforementioned tests will be carried out on different days to avoid the effect of fatigue on performance with a break of more than 48 hours between tests. The participants in the control group will maintain the volume and intensity of the training prior to the intervention study and the subjects of the WB-EMS and WB-EMS-AC groups will substitute one conventional training day for one with global electrostimulation for six weeks; the training of the first group will be non-specific and that of the second specific for runners and the duration of both will be 20 minutes.