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According to aged lumbar extension strength of chronic low back pain in Korean population of 10-80 years

Abstract

Background and Study Aim: Lumbar extension muscle strength according to gender and age group of patients with low back pain will be a measure of their lumbar muscle strength. Therefore, the purpose of this study is the basic data of medical and exercise therapy by indexing lumbar extension muscle strength of low back pain patients.

Material and Methods: Three thousand seventy-eight chronic low back pain participants were enrolled for the present study. Maximum muscle strength was measured at maximum flexion angle and maximum extension angle according to ROM (range of motion) results. For each isometric test, participants were seated and secured in the MEDX (medx lumbar extension machine, Ocala, FL, USA) machine.

Results: The relative ROM (p = 0.012) differed significantly among the aged groups in all participants. In addition, mean of strength (p<0.001), maximal of strength (p<0.001), mean of strength %BW (body weight) (p<0.001) and maximal of strength %BW (p<0.001) are significant differences in all participants. The results of multiple regression analysis that based on the ‘model A’, maximal of strength for 32.1% of the variance in weigh, body mass index and range of motion. In addition ‘model B’ is 30.4%, ‘model C’ is 28.8%, ‘model D’ is 28.5%, ‘model E’ is 21.7%, and ‘model F’ is 23.5% of the variance in weigh, body mass index and range of motion.

Conclusions: We found the three predictor (weight, BMI, and ROM) variables accounted for 32.1% of the variance in maximal of strength %BW, the highest in <29 years groups. Our data indicate that the basic data of medical and exercise therapy by indexing lumbar extension muscle strength of low back pain patients.