Table 4.

Descriptive statistics and two-way ANOVA of flexibility.

Parameter	Pre-test (m ± SD)	Post-test (m ± SD)	Change (m ± SD)	Time effect	Group effect	Time×group
Flexibility of the knee joint
IGDL	122.6 ± 8.9°	112.3 ± 9.5°	+8.4% ± 4.2%	p < 0.001 F = 41.379 ${\eta }_p^2$ = 0.320	p = 0.398 F = 0.997 ${\eta }_p^2$ = 0.033	p < 0.001 F = 26.815 ${\eta }_p^2$ = 0.478
IGnDL	120.4 ± 8.8°	120.6 ± 8.4°	−0.2% ± 2.3%
CGDL	121.8 ± 8.4°	120.7 ± 8.3°	+0.9% ± 2.6%
CGnDL	120.1 ± 7.4°	119.1 ± 7.0°	+0.8% ± 2.2%
Flexibility of hamstrings
HIGDL	77.2 ± 10.2°	90.2 ± 11.9°	+16.8% ± 9.7%	p < 0.001 F = 31.242 ${\eta }_p^2$ = 0.262	p = 0.679 F = 0.507 ${\eta }_p^2$ = 0.017	p < 0.001 F = 30.359 ${\eta }_p^2$ = 0.509
IGnDL	79.8 ± 14.6°	79.5 ± 13.7°	−0.4% ± 3.5%
CGDL	79.0 ± 11.6°	78.9 ± 11.0°	−0.2% ± 5.5%
CGnDL	80.8 ± 13.7°	80.3 ± 12.6°	−0.6% ± 3.5%
Flexibility of the ankle joint
IGDL	16.0 ± 2.5 cm	17.5 ± 2.6 cm	+9.4% ± 8.4%	p < 0.001 F = 9.592 ${\eta }_p^2$ = 0.098	p < 0.028 F = 3.170 ${\eta }_p^2$ = 0.098	p < 0.001 F = 13.183 ${\eta }_p^2$ = 0.310
IGnDL	15.1 ± 2.2 cm	15.0 ± 2.3 cm	−0.6% ± 5.4%
CGDL	16.0 ± 2.3 cm	15.8 ± 2.5 cm	−0.7% ± 7.0%
CGnDL	14.9 ± 1.9 cm	15.1 ± 2.0 cm	+1.0% ± 4.2%

IG, intervention group; CG, control group; DL, dominant leg; nDL, non-dominant leg.