Table 3.

Characteristics of the studies included in the review with a questionable control group

Author and year	Objective and type of study	N	Sample Characteristics	Duration	Weekly sessions	Current parameters	Current intensity	Training protocol
Wolfgang Kemmler 2015	Determine the increases in CK concentration and its corresponding impact on health parameters and changes in concentration levels throughout training	N = 11	Men trained but without experience in WB-EMS	10 weeks	1 sessions per week	Bipolar 85 Hz duty cycle: 60% 6–4 s On time of pulse 350 μs Impulse rise: 0 sImpulse decay: 0 s	Intensity ≥7 (very hard) RPE-10 Every 3 min increases by 2–3%
	Increase of CK after a first WB-EMS session compared with a marathon race	N = 26	Men trained but without experience in WB-EMS Marathoners training level 3 days per week for at least 12 months	Acute effect during 5 days contiguous to the effort
Wolfgang Kemmler 2012	Analyze the energy expenditure added by the use of WB-EMS	N = 19	Active men students 5 to 8 h of exercise a week last 2 years	One session (16 min)	–	Bipolar 85 Hz duty cycle: 50% 4–4 s On time of pulse 350 μs Impulse rise: 0 sImpulse decay: 0 s	Maximum tolerance	Same exercises from Test I of 2010
Miguel Ángel De la Cámara 2018	Evaluation of WB-EMS as a post-exercise recovery method	N = 9	Trained men 21 years	One session 20 min	–	1 Hz duty cycle: 100% On time of pulse 350 μs Impulse rise: No dataImpulse decay: No data	The most comfortable possible	Subjets lay quietly in a supine position

WB-EMS (whole-body electrical myostimulation); N (sample size); RPE (rated perceived exertion); R (recovery between series)