Table 2. Activity differences between the 60%, 65% and 70% 1RM for HBBS and LBBS (mean ± SD) and p-values.

Technique	60 vs. 65% 1RM		65 vs. 70% 1RM		60 vs. 70% 1RM
	Diff (%)	p	Diff (%)	p	Diff (%)	p
HBBS, eccentric
LES	−8.4 ± 4.3*	<0.001	−4.3 ± 3.5*	<0.001	−12.4 ± 4.4*	<0.001
GM	−10.7 ± 9.3*	<0.001	−14.0 ± 7.5*	<0.001	−23.7 ± 7.5*	<0.001
BF	−12.6 ± 7.5*	<0.001	−7.5 ± 4.1*	0.012	−19.7 ± 8.3*	<0.001
RF	−5.5 ± 4.7*	0.002	−4.9 ± 3.7*	0.003	−10.1 ± 6.0*	<0.001
VLO	−7.4 ± 5.4*	<0.001	−7.1 ± 5.3*	<0.001	−14.1 ± 4.9*	<0.001
VMO	−5.9 ± 4.5*	<0.001	−5.8 ± 4.7*	<0.001	−11.5 ± 3.8*	<0.001
HBBS, concentric
LES	−5.5 ± 3.3*	0.001	−3.9 ± 2.4*	0.050	−9.4 ± 7.0*	<0.001
GM	−13.2 ± 5.8*	<0.001	−7.4 ± 4.1*	<0.001	−19.8 ± 8.5*	<0.001
BF	−10.4 ± 8.6*	<0.001	1.0 ± 3.3	0.998	−9.7 ± 6.3*	<0.001
RF	−6.4 ± 3.1*	<0.001	−1.5 ± 4.4	0.428	−7.9 ± 4.2*	<0.001
VLO	−8.5 ± 5.5*	<0.001	0.8 ± 2.4	0.996	−7.6 ± 4.0*	<0.001
VMO	−7.9 ± 4.4*	<0.001	0.7 ± 1.8	1.000	−7.3 ± 3.5*	<0.001
LBBS, eccentric
LES	−1.7 ± 3.1	0.064	−6.5 ± 4.9*	<0.001	−8.1 ± 5.8*	<0.001
GM	−5.9 ± 5.1*	0.021	−9.5 ± 5.3*	<0.001	−15.2 ± 8.4*	<0.001
BF	−10.4 ± 6.4*	<0.001	−8.8 ± 5.1*	<0.001	−17.9 ± 12.4*	<0.001
RF	−7.2 ± 3.1*	0.008	−6.6 ± 4.6*	0.001	−13.5 ± 5.4*	<0.001
VLO	−0.0 ± 2.4	1.000	−5.2 ± 4.6*	<0.001	−5.0 ± 5.0*	<0.001
VMO	−1.2 ± 1.7	0.132	−8.0 ± 4.9*	<0.001	−9.0 ± 5.3*	<0.001
LBBS, concentric
LES	−1.2 ± 4.7	0.273	−3.7 ± 3.3	0.072	−5.0 ± 3.8*	0.001
GM	−3.3 ± 3.1	0.061	−5.2 ± 4.3*	0.003	−8.6 ± 5.8*	<0.001
BF	−7.0 ± 5.8*	<0.001	−1.9 ± 4.3	0.997	−8.9 ± 5.7*	<0.001
RF	−7.7 ± 3.8*	0.001	−1.5 ± 2.4	0.647	−9.1 ± 5.8*	<0.001
VLO	−4.3 ± 4.0	0.059	−0.8 ± 2.5	0.516	−5.1 ± 3.4*	0.001
VMO	−1.5 ± 3.5	0.267	−4.6 ± 3.7*	<0.001	−6.0 ± 3.7*	<0.001

Notes.

HBBS

high-bar back squat

LBBS

low-bar back squat

1RM

one repetition maximum

SD

standard deviation

Diff

difference

LES

lumbar erector spinae

GM

gluteus maximus

BF

biceps femoris

RF

rectus femoris

VLO

vastus lateralis

^*significant differences (p ≤ 0.05) between the 60% 65% and 70% 1RM.