Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12523
Title: The correlation between craniovertebral angle, backpack weights, and disability due to neck pain in adolescents
Authors: Cheung, CH
Shum, ST
Tang, SF
Yau, PC
Chiu, TTW
Issue Date: 2010
Publisher: IOS Press
Source: Journal of back and musculoskeletal rehabilitation, 2010, v. 23, no. 3, p. 129-136 How to cite?
Journal: Journal of back and musculoskeletal rehabilitation 
Abstract: Purposes: To investigate the responses of the craniovertebral (CV) angle to backpack loadings in adolescents with and without neck pain and to explore the relationships between CV angle, relative backpack weight, neck pain and disability. Methods: A cross-sectional single-blinded study was conducted on 60 adolescents (30 neck pain and 30 non-neck pain) aged from 13 to 18 years old. The verbal analog scale (VAS) and Chinese version of Northwick Park Neck Pain Questionnaire (NPQ) were used to assess neck pain severity and disability respectively. CV angle was measured in neutral and with backpack loadings of 5% to 30% of subject's body weight by using the Head Posture Spinal Curvature Instrument (HPSCI). Results: In both groups, CV angles gradually decreased with increment of backpack loadings and the amount of decreases became significant from 10% body weight onwards (P < 0.05). Although the changes of CV angles did not show any significant differences at any point of comparison between the groups, the neck pain group showed a clinically significant decrease of CV angle (∼ 5°) at 10% relative loading whereas non-neck pain group did it at 15% relative loading. Change of CV angles did not show significant correlations with relative backpack weight, cervical pain and disability (P > 0.05). Conclusions: Our findings suggested a safety limit of 10% relative backpack load for adolescents. The results showed the tendency that the ability of maintaining good head posture in response to backpack loadings by non-neck pain subjects might be better than those with neck pain.
URI: http://hdl.handle.net/10397/12523
ISSN: 1053-8127
EISSN: 1878-6324
DOI: 10.3233/BMR-2010-0259
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