. 2017 Oct 23;9:16. doi: 10.1186/s13102-017-0080-2

Table 3.

Muscle retractions, lumbar spine range of motion, and physical activity classification

Variables	Responses		Groups			Total
Variables	Responses		G1	G2	G3	Total
Right Leg	MHF	Absent (−)	32 (52.5)^Aa	39 (53.4)^Aa	28 (47.5)^Aa	99
	MHF	Present (+)	29 (47.5)^Aa	34 (46.6)^Aa	31 (52.5)^Aa	94
	RF	Absent (−)	35 (57.4)^Aa	31 (42.5)^Aa	22 (37.3)^Aa	88
	RF	Present (+)	26 (42.6)^Aa	42 (57.5)^Aa	37 (62.7)^Ab	105
Left Leg	MHF	Absent (−)	33 (54.1)^Aa	36 (49.3)^Aa	26 (44.1)^Aa	95
	MHF	Present (+)	28 (45.9)^Aa	37 (50.7)^Aa	33 (55.9)^Aa	98
	RF	Absent (−)	32 (52.5)^Aa	35 (47.9)^Aa	28 (47.5)^Aa	95
	RF	Present (+)	29 (47.5)^Aa	38 (52.1)^Aa	31 (52.5)^Aa	98
Schober		Absent (−)	54 (88.5)^Ab	63 (86.3)^Ab	51 (86.4)^Ab	168
Schober		Present (+)	7 (11.5)^Aa	10 (13.7)^Aa	8 (13.6)^Aa	25
Posture 1		Absent (−)	30 (49.2)^Ba	19 (26.0)^Aa	17 (28.8)^ABa	66
Posture 1		Present (+)	31 (50.8)^Aa	54 (74.0)^Bb	42 (71.2)^ABb	127
Posture 2		Absent (−)	47 (77.0)^Ab	60 (82.2)^Ab	49 (83.1)^Ab	156
Posture 2		Present (+)	14 (23.0)^Aa	13 (17.8)^Aa	10 (16.9)^Aa	37
Physical activity categories		Sedentary	7 (11,5)^Aab	4 (5,5)^Aa	0 (0,0)^Aa	11
		Irreg. Active	1 (1,6)^Aa	3 (4,1)^Aa	4 (6,8)^Aab	8
		Active	13 (21,3)^Ab	7 (9,6)^Aa	13 (22,0)^Ab	33
		Very Active	40 (65,6)^Ac	59 (80,8)^Ab	42 (71,2)^Ac	141

MHF monoarticular hip flexor flexibility, RF rectus femoris muscle flexibility, Irreg. Active irregularly active; ^A,B p < 0.05 to horizontal comparisons, between different groups; ^a,b p < 0.05 to vertical comparisons, within group. Goodman’s test for contrasts between and within multinomial populations