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Electrical muscle stimulation (EMS) is an increasingly popular training method and has become the focus of research in recent years. New EMS devices offer a wide range of mobile applications for whole-body EMS (WB-EMS) training, e.g., the intensification of dynamic low-intensity endurance exercises through WB-EMS. The present study aimed to determine the differences in exercise intensity between WB-EMS-superimposed and conventional walking (EMS-CW), and CON and WB-EMS-superimposed Nordic walking (WB-EMS-NW) during a treadmill test. Eleven participants (52.0 ± years; 85.9 ± 7.4 kg, 182 ± 6 cm, BMI 25.9 ± 2.2 kg/m 2 ) performed a 10 min treadmill test at a given velocity (6.5 km/h) in four different test situations, walking (W) and Nordic walking (NW) in both conventional and WB-EMS superimposed. Oxygen uptake in absolute (VO 2 ) and relative to body weight (rel. VO 2 ), lactate, and the rate of perceived exertion (RPE) were measured before and after the test. WB-EMS intensity was adjusted individually according to the feedback of the participant. The descriptive statistics were given in mean ± SD. For the statistical analyses, one-factorial ANOVA for repeated measures and two-factorial ANOVA [factors include EMS, W/NW, and factor combination (EMS * W/NW)] were performed (α = 0.05). Significant effects were found for EMS and W/NW factors for the outcome variables VO 2  (EMS:  p  = 0.006,  r  = 0.736; W/NW:  p  < 0.001,  r  = 0.870), relative VO 2  (EMS:  p  < 0.001,  r  = 0.850; W/NW:  p  < 0.001,  r  = 0.937), and lactate (EMS:  p  = 0.003,  r  = 0.771; w/NW:  p  = 0.003,  r  = 0.764) and both the factors produced higher results. However, the difference in VO 2  and relative VO 2  is within the range of biological variability of ± 12%. The factor combination EMS * W/NW is statistically non-significant for all three variables. WB-EMS resulted in the higher RPE values ( p  = 0.035,  r  = 0.613), RPE differences for W/NW and EMS * W/NW were not significant. The current study results indicate that WB-EMS influences the parameters of exercise intensity. The impact on exercise intensity and the clinical relevance of WB-EMS-superimposed walking (WB-EMS-W) exercise is questionable because of the marginal differences in the outcome variables.

Whole-Body EMS Superimposed Walking and Nordic Walking on a Treadmill—Determination of Exercise Intensity to Conventional Exercise