Objective: Investigate effects of interactions between biomechanical, psychosocial and individual risk factors on spinal loading and inflammatory responses. Background: Current low back pain causation theories do not explain the difficulty making specific diagnoses based on low back imaging. Methods: Two groups of subjects possessing sensor or intuitor personality trait performed repetitive lifting with high or low mental workload. Spinal loading was assessed using a biomechanical model and immune markers were collected before and after lifting. Results: Mental loading was associated with a decrease in AP shear. Both exposure conditions were characterized by a time-regulate immune response evidenced by markers of inflammation, tissue trauma and muscle damage. Intuitors CK levels increased over sensors following the low mental workload condition but not for the high mental workload condition. Conclusions: An immune response exists to lifting and mental loading that is influenced by personality and mental workload.
Get full access to this article
View all access options for this article.
References
1.
AllreadW. G. (2000). An Investigation of the Relationship Between Personality and Risk Factors for Musculoskeletal Disorders. The Ohio State University, Columbus.
2.
DavisK. G.MarrasW. S. (2003). Partitioning the contributing role of biomechanical, psychosocial, and individual risk factors in the development of spine loads. Spine J, 3(5), 331-338.
3.
DeyoR. A.WeinsteinJ. N. (2001). Low back pain. N Engl J Med, 344(5), 363-370.
4.
MarrasW. S.DavisK. G.HeaneyC. A.MaronitisA. B.AllreadW. G. (2000). The influence of psychosocial stress, gender, and personality on mechanical loading of the lumbar spine. Spine, 25(23), 3045.
5.
MarrasW. S.FathallahF. A.MillerR. J.DavisK. G.MirkaG. A. (1992). Accuracy of a three-dimensional lumbar motion monitor for recording dynamic trunk motion characteristics. International Journal of Industrial Ergonomics, 9, 75-87.
6.
MarrasW. S.GranataK. P. (1997). The development of an EMG-assisted model to assess spine loading during whole-body free-dynamic lifting. J Electromyogr Kinesiol, 7(4), 259-268.
7.
McGillS. M. (1997). The biomechanics of low back injury: implications on current practice in industry and the clinic. J Biomech, 30(5), 465-475.
8.
MyersP. B.MyersK. D. (1998). Myers-Briggs type indicator form: Palo Alto, California: Consulting Psychologists Press, Inc.
9.
NAS/IOM (2001). Musculoskeletal disorders and the workplace: low back and upper extremities. Washington, DC: National Academies Press.
10.
PillayJ.den BraberI.VrisekoopN.KwastL. M.de BoerR. J.BorghansJ. A.. (2010). In vivo labeling with 2H2O reveals a human neutrophil lifespan of 5.4 days. Blood, 116(4), 625-627.
11.
StroopJ. (1935). Studies of interference in serial verbal reactions. J Experimental Psychol, 18, 643-662.
12.
TheadoE. W.KnapikG. G.MarrasW. S. (2007). Modification of an EMG-assisted biomechanical model for pushing and pulling. International Journal of Inudstrial Ergonomics, 37(11-12), 7.
13.
YangG.MarrasW. S.BestT. M. (2011). The biochemical response to biomechanical tissue loading on the low back during physical work exposure. Clin Biomech (Bristol, Avon), 26(5), 431-437.
