Table 4.

The mean, SD and range values of the angles

Angles	Normal			Upright			Slouched
	Mean	SD	Range (degrees)	Mean	SD	Range (degrees)	Mean	SD	Range (degrees)
Sagittal head angle	20.05	7.84	0 – 34.70	19.99	8.15	0.90 – 34.40	10.28	10.68	(-)15.90 – 34.20
Cervical angle	47.66	9.75	21.90 – 62.90	52.72	11.18	22.30 – 71.30	21.49	27.57	(-)34.10 – 53.40
Protraction/retraction angle	130.21	25.77	65.30 – 178.70	124.76	20.36	76.50 – 159.80	145.68	20.62	103.70 – 208.70
Thoracic angle	63.25	8.57	49.50 – 89.20	61.37	11.76	40.80 – 97.60	61.46	8.88	39.30 – 78.10
Arm angle	23.46	12.75	(-)5.00 – 50.30	24.21	12.09	3.30 – 60.90	32.72	10.34	14.50 – 48.80