Neck Health Metrics and Quality of Life: A Comparative Study in Bike Drivers with and without Neck Pain

Figures & data

Table 1 Descriptive Statistics for Subjects Characteristics

Demographic Characteristic	Neck Pain Group (n=50)	No Neck Pain Group (n=50)	Chi Square/t value	Mean difference	95% Confidence Interval	P value
Age (Mean ± SD, years)	35 ± 7	33 ± 8	−1.33	−2.00	−4.98 to 0.98	0.186
Gender (M/F)	30/20	25/25	1.01	–	–	0.314
Height (cm)	155.4 ± 8.05	155.9 ± 7.36	0.32	−0.50	−3.56 to 2.56	0.7465
Weight (Kg)	61.3 ± 10.07	60.1 ± 7.61	0.67	1.20	−2.34 to 4.74	0.503
BMI (kg/m2)	25.2 ± 3.54	24.7 ± 3.28	0.73	0.50	−0.85 to 1.85	0.465
Daily Bike Riding (Mean ± SD, hours)	5 ± 1	5 ± 1	0.00	0.00	−0.39 to 0.39	1.000
Experience of biking (years)	15.2 ± 3.1	14.9 ± 3.8	0.43	0.30	−1.07 to 1.67	0.666

Table 2 Descriptive Statistics for Cervical Range of Motion, Craniovertebral Angle, Neck Proprioception, Physical Functioning and General Health

Variable	Neck Pain Group (Mean ± SD)	No Neck Pain Group (Mean ± SD)	t-value	Mean Difference	95% Confidence Interval	P-value
Cervical Range of Motion
Flexion (°)	32.3 ±5.6	45.2±5.1	12.04	12.9	10.77 to 15.02	<0.001
Extension (°)	35.2 ±6.1	48.5±6.2	10.22	13.3	10.85 to 15.74	<0.001
Left Rotation (°)	39.6±7.8	52.1±7.6	8.09	12.5	9.44 to 15.55	<0.001
Right Rotation (°)	40.2±7.3	52.9±7.1	8.42	12.7	9.84 to 15.55	<0.001
Craniovertebral Angle
CVA (°)	48.5 ±5.3	54.6±4.2	6.89	6.1	4.20 to 7.99	<0.001
Neck Proprioception
Neck Proprioception (°)	4.8 ±1.2	2.6 ±0.9	−10.47	−2.2	−2.62 to −1.77	<0.001
SF-36
Physical Component Score (PCS)	39.4 ±7.1	47.1±7.8	5.16	7.70	4.73 to 10.66	<0.001
Mental Component Score (MCS).	40.8±14.8	49.5±6.9	3.76	8.70	4.11 to 13.28	<0.001

Table 3 Correlation Coefficients Between Neck Disability Index (NDI) and the Evaluated Variables (Cervical ROM, Neck Proprioception, CVA, and QOL) Was Determined Using Pearson’s Correlation Coefficient

Variable	Correlation with Neck Pain	P value
Cervical ROM - Flexion	−0.47	<0.001
Cervical ROM - Extension	−0.46	<0.001
Cervical ROM - Left Rotation	−0.44	<0.001
Cervical ROM - Right Rotation	−0.45	<0.001
Neck Proprioception	0.41	<0.001
Craniovertebral Angle	−0.40	<0.001
Physical Component Score (PCS)	−0.65	<0.001
Mental Component Score (MCS).	−0.60	<0.001

Figure 1 Measurement of Craniovertebral Angle (CVA) with Surgimap Software.

Figure 2 Correlation between NDI and SF-36 (PCS).

Figure 3 Correlation between NDI and SF-36 (MCS).

Table 4 Comparison of Mean Difference Eight SF-36 Dimensions Among with Pain and Without Neck Pain Groups

Eight SF-36 Dimensions	Neck Pain Group (Mean ± SD)	No Neck Pain Group (Mean ± SD)	t-value	Mean Difference	95% Confidence Interval	P value
Physical Function	64.8±10.4	83.6±9.1	9.62	18.8	14.92 to 22.67	<0.001
General Health	62.1±11.3	78.3±10.2	7.99	16.22	11.92 to 20.47	<0.001
Role physical	16.3±22.3	77.1± 16.2	15.59	60.80	53.06 to 68.53	<0.001
Bodily pain	37.3 ± 21.3	72.4±22.3	8.04	35.10	26.44 to 43.75	<0.001
Vitality	43.1 ±21.1	69.1±20.3	6.27	26.00	17.78 to 34.21	<0.001
Social functioning	56.1± 22.7	79.2± 23.5	4.99	23.10	13.93 to 32.26	<0.001
Role emotional	56.5±44.4	81.4± 30.1	3.28	24.90	9.84 to 39.95	0.0014
Mental health	66.1± 19.7	77.9 ±18.1	3.11	11.80	4.29 to 19.30	0.0024