Poramet EardeMantana VongsirinavaratPrasert SakulsriprasertRoongtiwa VachalathitiMahidol University. Faculty of Physical Therapy2018-04-232018-04-232018-042014Journal of The Medical Association of Thailand. Vol.97, No.7 (2014), S89-S94https://repository.li.mahidol.ac.th/handle/20.500.14594/10935Objective: To investigate immediate effects of biofeedback training on motor control performance in participants with nonspecific chronic low back pain. Material and Method: RCT was conducted. The training group received isolated and cocontraction training of trunk stabilizers in lying on the left side, sitting on stool and sitting on a gymnastic ball, while the control group was asked to rest comfortably on a chair. Trunk muscles response time during rapid arm movement test was recorded using surface electromyography. Two-way ANOVA and Bonferroni post hoc test were used to detect changes within and between groups. Results: In the training group, the trunk muscles response times were significantly decreased after training when compared with those in the control group (p < 0.05). Conclusion: Trunk stabilizer training has a beneficial effect on motor response time of the trunk muscles. The long-term effects of exercise should be further considered with a larger sample size.engMahidol UniversityBack painBiofeedbackMotor controlEMGExerciseArticleThe Medical Association of Thailand