. 2013 Jan-Feb;48(1):12–24. doi: 10.4085/1062-6050-48.1.13

Table 2.

Descriptive Statistics for Group and Condition

Variable	Group
	Compression Shirt Only				Compression Shirt With Fully Tensioned Straps
	No Brace		Brace		No Brace		Brace
	Mean ± SD	95% Confidence Interval	Mean ± SD	95% Confidence Interval	Mean ± SD	95% Confidence Interval	Mean ± SD	95% Confidence Interval
Forward head angle, °	48.6 ± 2.2	47.5, 49.6	47.9 ± 2.9	46.5, 49.3	47.3 ± 4.8	45.0, 49.6	46.6 ± 4.3	44.5, 48.6
Forward shoulder angle, °^a	61.0 ± 8.2	57.0, 65.0	58.6 ± 10.0	53.8, 63.4	63.3 ± 8.6	59.0, 67.6	57.2 ± 7.3	53.7, 60.7
Forward flexion
Upper trapezius, % maximal voluntary isometric contraction	41.9 ± 16.9	33.6, 50.3	44.0 ± 17.7	35.2, 52.8	55.4 ± 21.2	45.2, 65.6	51.6 ± 23.7	40.1, 63.0
Middle trapezius, % maximal voluntary isometric contraction	26.6 ± 13.1	20.0, 33.2	25.8 ± 14.4	18.7, 33.0	31.0 ± 18.4	22.2, 39.9	27.3 ± 10.4	22.1, 32.5
Lower trapezius, % maximal voluntary isometric contraction^b	27.2 ± 13.5	20.4, 33.9	31.4 ± 15.1	24.1, 38.7	24.1 ± 11.0	18.8, 29.4	28.9 ± 12.8	22.8, 35.1
Serratus anterior, % maximal voluntary isometric contraction	49.1 ± 25.9	36.6, 61.6	48.8 ± 30.2	34.3, 63.4	46.0 ± 14.1	38.9, 53.0	46.7 ± 20.9	36.2, 57.1
Shoulder extension
Upper trapezius, % maximal voluntary isometric contraction^c	22.0 ± 10.8	16.8, 27.2	19.0 ± 8.9	14.7, 23.3	22.3 ± 9.3	17.8, 26.7	19.2 ± 7.2	15.6, 22.7
Middle trapezius, % maximal voluntary isometric contraction^d	15.1 ± 5.5	12.5, 17.7	13.8 ± 6.0	10.9, 16.7	14.5 ± 5.9	11.6, 17.3	13.6 ± 5.6	10.9, 16.2
Lower trapezius, % maximal voluntary isometric contraction	24.5 ± 8.1	20.3, 28.7	28.5 ± 13.5	21.9, 35.0	18.7 ± 9.8	14.0, 23.4	21.2 ± 13.5	14.6, 27.7
Serratus anterior, % maximal voluntary isometric contraction	14.9 ± 8.9	10.6, 19.1	14.7 ± 8.8	10.5, 18.9	16.0 ± 8.1	12.0, 20.1	15.9 ± 6.9	12.5, 19.3
W's (upper trapezius), % maximal voluntary isometric contraction^e	40.9 ± 22.5	30.1, 51.8	45.1 ± 23.6	33.7, 56.4	45.8 ± 22.9	34.7, 56.8	39.0 ± 23.4	27.7, 50.2
T's (middle trapezius), % maximal voluntary isometric contraction	67.7 ± 18.6	58.7, 76.7	67.2 ± 19.5	57.8, 76.6	67.1 ± 26.6	53.9, 80.3	65.4 ± 23.3	54.2, 76.7
Y's (lower trapezius), % maximal voluntary isometric contraction^f	64.5 ± 29.9	52.1, 82.2	67.1 ± 26.9	53.7, 80.4	60.5 ± 19.8	51.0, 70.1	69.4 ± 26.2	56.7, 82.0
Serratus punch (serratus anterior), % maximal voluntary isometric contraction	26.9 ± 9.9	22.2, 31.7	25.9 ± 13.0	19.6, 32.2	26.2 ± 11.1	20.9, 31.6	30.6 ± 14.8	23.5, 37.8

^{^a}

Indicates interaction effect for brace × group (P = .048). Forward shoulder angle was lower in the group with compression shirt with fully tensioned straps when the brace was applied.

^{^b}

Indicates main effect for brace (P = .001). Lower trapezius activity was higher when the brace was applied, regardless of method.

^{^c}

Indicates main effect for brace (P = .001). Upper trapezius activity was lower when the brace was applied, regardless of method.

^{^d}

Indicates main effect for brace (P = .01). Middle trapezius activity was lower when the brace was applied, regardless of method.

^{^e}

Indicates interaction effect for brace × group (P = .04). Upper trapezius activity was lower in the group with group compression shirt with fully tensioned straps when the brace was applied. Upper trapezius activity was higher in the group with compression shirt only when the brace was applied.

^{^f}

Indicates main effect for brace (P = .02). Lower trapezius activity was higher when the brace was applied, regardless of method.