"A benefit of EMS training combined with additional weights could not be reproduced outside of professional sports. In fact, the opposite seems to be true. The results mainly indicate negative influences such as an increased risk of exhaustion and overload."
Sources:
Paillard T: Training Based on Electrical Stimulation Superimposed Onto Voluntary Contraction Would be Relevant Only as Part of Submaximal Contractions in Healthy Subjects. Front. Physiol. 2018; 9: 1428.
Seyri K, Maffiuletti N: Effect of Electromyostimulation Training on Muscle Strength and Sports Performance.
Strength and Conditioning Journal 2011; 33: 70-75
Wirtz N, Zinner C, Dörmann U, Kleinöder H, Mester J: Effects of Loaded Squat Exercise with and without Application
of Superimposed EMS on Physical Performance. Journal of Sports Science and Medicine 2016; 15: 26-33
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