Table 6.

Changes in maximal strength (F_max) and power (P_max) with 40 and 60% additional load for leg curl (LC) and leg extension (LE) in group S (strength training) and S+E (strength training with superimposed WB-EMS) during pre-, post-, and retests.

	Parameter	Group	Pretest	Posttest	Pre-Post		Retest	Pre-Re		ANOVA p (${\mathrm{\eta }}_{\mathrm{p}}^2$)
					% Delta	SDM		% Delta	SDM	Time	Group	Time∗ Group
LC	Fmax	S+E	725 116	843 177	+16.3∗	0.79	857 168	+18.2∗	0.91	<0.001 (0.376)	0.886 (0.001)	0.560 (0.029)
	(N)	S	722 243	859 161	+19.0∗	0.67	813 195	+12.6∗	0.41
	Pmax 40%	S+E	339 81	400 100	+18.0∗	0.67	392 94	+15.6∗	0.60	<0.001 (0.564)	0.910 (0.001)	0.139 (0.098)
	(W)	S	333 107	390 102	+17.1∗	0.55	422 103	+26.7∗	0.85
	Pmax 60%	S+E	405 81	445 94	+9.9∗	0.46	449 95	+10.9∗	0.50	<0.001 (0.424)	0.701 (0.008)	0.769 (0.013)
	(W)	S	382 98	433 106	+13.4∗	0.50	441 88	+15.5∗	0.63
LE	Fmax	S+E	1507 202	1657 330	+10.0∗	0.55	1697 337	+12.6∗	0.68	<0.001 (0.475)	0.509 (0.022)	0.899 (0.005)
	(N)	S	1445 255	1566 277	+8.4∗	0.45	1622 258	+12.2∗	0.69
	Pmax 40%	S+E	691 150	768 171	+11.1∗	0.48	784 204	+13.5∗	0.52	<0.001 (0.379)	0.716 (0.007)	0.711 (0.017)
	(W)	S	717 193	812 199	+13.3∗	0.49	795 173	+10.9∗	0.43
	Pmax 60%	S+E	663 143	707 154	+6.6	0.30	684 145	+3.2	0.15	0.091 (0.113)	0.391 (0.037)	0.105 (0.106)
	(W)	S	714 185	720 131	+0.8	0.04	777 128	+8.8	0.40

Values are presented as mean ± SD. Moderate to large standardized mean differences (SMD) have been highlighted in bold. Significance level for time effects for both groups to pretest was set at p ≤ 0.05^∗.