We evaluated the effect of a whole-body-electromyostimulation over 14 weeks on anthropometrical, physiological and muscular parameters in postmenopausal women. 30 females (64.5 + /-5.5 years) with a long experience in physical training were randomly assigned either to a control-group, (CG: n = 15), that maintained their general-training-program (2×60 min/week endurance and dynamic strength), or to an electromyostimulation-group (ESG: n = 15), that additionally performed a 20 min whole-body-electromyostimulation training each 5 days. Resting metabolic rate (RMR) was selected as the primary endpoint, however, body circumferences, subcutaneous body-fat, strength and power as well as drop-out and adherence were also determined. RMR maintained in the ESG (-0.1 kcal/h) and decreased in the CG (-3.2 kcal, p = .038), however, group differences did not reach significance (p = .095, Effect size (ES): Cohens d = .62). Sums of skinfolds (−8.6%) and waistcircumference (−2.3%) significantly decreased in the ESG while both parameters increased in the CG (1.4% and 0.1%). Between-group-differences were significant for both parameters (p = .001, ES: 1.37 and 1.64). Isometric strength changes of the trunk-extensors and leg-extensors significantly (p = .006) differed between groups (9.9 vs. -6.4%, ES: d = 1.53; 9.6 vs. -4.5%, ES: d = 1.43). No significant differences (p = .089) were observed for trunk-flexors changes (6.6 vs. -5.6%; ES: d = .72). Further, between-group-differences (p = .001) were determined for leg-extensor power (8.6 vs. −1.2%, ES: d = 1.50). Conclusion and practible applications: We conclude that for the elderly subject unable or unwilling to perform dynamic strength exercises, electromyostimulation may be a “smooth” alternative to maintain lean body mass, strength and power.