The Efficacy of Manual Therapy and Pressure Biofeedback-Guided Deep Cervical Flexor Muscle Strength Training on Pain and Functional Limitations in Individuals with Cervicogenic Headaches: A Randomized Comparative Study

Table 1

Shapiro‒Wilk test of normality for the participant distribution in both groups (N = 30/group).

Variables	Group 1 (N = 30)				Group 2 (N = 30)
	Mean ± SD	Statistics	df	value	Mean ± SD	Statistics	df	value
Age (years)	35.0 ± 2.82	0.974	30	0.653	35.07 ± 2.75	0.931	30	0.052
Height (m)	1.71 ± 0.07	0.912	30	0.016	1.70 ± 0.07	0.972	30	0.595
Weight (kg)	64.70 ± 4.83	0.946	30	0.130	63.73 ± 5.25	0.962	30	0.344
BMI (kg/m^2)	22.14 ± 2.59	0.871	30	0.002	22.23 ± 2.68	0.933	30	0.060
VAS0	6.50 ± 0.73	0.951	30	0.181	6.32 ± 0.76	0.934	30	0.062
HDI0	37.27 ± 7.06	0.959	30	0.285	36.33 ± 7.07	0.969	30	0.525