One session of motor control exercise improves joint position sense assessed by an iPhone application: a randomized controlled trial

Abstract

[Purpose] To establish the test-retest reliability of an iPhone application and determine the immediate effect of motor control exercise (MCE) on lumbar position sense. [Participants and Methods] This study used a two-arm, randomized controlled trial design with a blinded assessor. Sixty healthy participants were randomized into the exercise or control group. The exercise group underwent 30-min MCE, whereas the control group rested for 15 min. Lumbar motion measured by two iPhones with goniometer application was used to determine the test-retest reliability. Absolute repositioning errors (pre- and post-test) from the control and exercise groups were used to determine the immediate effect of MCE on lumbar position sense. [Results] The test-retest reliability was 0.67–0.95. A significant interaction effect was found for Angle*Time, main effect of Angle, and main effect of Time. Post-hoc comparison showed a significant improvement in position sense at 45° and 60° in the exercise group. [Conclusion] The findings suggest that a mobile phone application has the ability to detect changes in lumbar position sense between sessions that exceed measurement error following MCE. One session of specific MCE can improve lumbar position sense at high lumbar flexion.

Active straight leg raising (ASLR) competence improves with reverse-ASLR exercises and not repeating ASLR exercises

“…Improved joint repositioning acuity has been reported in some randomized controlled trials including motor control training for individuals with spine disorders ( Jull et al, 2007 ; Wattananon et al, 2019 ). Therefore, a measure of active joint repositioning acuity of the hip with two inertial measurement unit sensors attached on the pelvis and the lateral thigh of the right lower limb was included.…”