Effect of high-velocity, low-amplitude treatment on superoxide dismutase and glutathione peroxidase activities in erythrocytes from men with neck pain.
OBJECTIVE
This study investigates the analgesic effect of high-velocity, low-amplitude (HVLA) manipulation and antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GPx) in erythrocytes of men with neck pain.


METHODS
Twenty-two men with neck pain of mechanical origin who were aged 20 to 50 years, were nonsmokers, had a sedentary lifestyle, had no comorbidities, and were not in adjuvant therapy underwent 6 sessions of HVLA chiropractic manipulation 3 times a week for 2 weeks. Patients were treated by the same chiropractor and under the same conditions. Blood samples were collected before the beginning of the treatment and at the end of the third and last session. Erythrocytes were separated from blood and then processed to determine SOD and GPx activities. The quadruple visual scale and the Neck Disability Index were used to demonstrate the analgesic effect of treatment. The results were analyzed by repeated-measures analysis of variance followed by Bonferroni posttest. Differences were considered significant when P was less than .05.


RESULTS
Despite the tendency to reduction in SOD and increase in GPx activities, there was no significant change after the treatment.


CONCLUSIONS
High-velocity, low-amplitude treatment for 6 sessions in men with neck pain did not affect systemic SOD and GPx activities. Despite the absence of significant changes, this study is important because it is the first to investigate the activities of SOD and GPx in patients with neck pain treated with HVLA spinal manipulation.
Department of Physiology, Institute of Basic Health Science, Federal University of Rio Grande do Sul/UFRGS, Porto Alegre, RS, Brazil. carolina.dc@clinicakolberg.com.br
Carolina
C
Kolberg
Andréa
A
Horst
Maira S
MS
Moraes
Angela
A
Kolberg
Adriane
A
Belló-Klein
Wania A
WA
Partata
D000328:Adult; D004912:Erythrocytes / Q000201:enzymology*; D005979:Glutathione Peroxidase / Q000378:metabolism*; D006801:Humans; D008297:Male; D026882:Manipulation, Chiropractic / Q000379:methods*; D020393:Manipulation, Spinal / Q000379:methods*; D008875:Middle Aged; D019547:Neck Pain / Q000097:blood / Q000201:enzymology* / Q000628:therapy*; D013482:Superoxide Dismutase / Q000378:metabolism*; D055815:Young Adult
D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase