NME indices of the investigated trunk muscles.

Table 3: NME indices of the investigated trunk muscles.

	Young		Female vs. Male	Elderly		Female vs. Male
	Female	Male	Female vs. Male	Female	Male	Female vs. Male
RA	20.9 ± 6.9	21.4 ± 3.7^**	n.s.	22.6 ± 6.7	26.0 ± 7.5^**	n.s.
OI	30.0 ± 10.0*	31.6 ± 9.0*	n.s.	40.2 ± 17.7*	40.9 ± 15.9*	n.s.
OE	32.4 ± 10.3	32.9 ± 5.6	n.s.	33.5 ± 9.1	37.7 ± 10.6	n.s.
MF	50.4 ± 12.4	76.6 ± 17.8	p < 0.001	51.9 ± 17.8	81.9 ± 18.9	p < 0.001
LO	64.3 ± 15.4	94.9 ± 28.7	p < 0.001	59.6 ± 21.4	99.1 ± 35.7	99.1 ± 35.7

Data are presented as mean ± SD. Tests between age groups: ^*p < 0.05, ^**p < 0.01.