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Supervised exercise therapy versus laser-guided exercise therapy on postural control in subjects with non-specific chronic low back pain: a randomized controlled clinical trial [with consumer summary]
Cana-Pino A, Apolo-Arenas MD, Carmona Del Barco P, Montanero-Fernandez J, Espejo-Antunez L
European Journal of Physical and Rehabilitation Medicine 2023 Apr;59(2):201-211
clinical trial
7/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND: Among the most effective therapeutic interventions in non-specific chronic low back pain, clinical practice guidelines highlight exercise therapy and patient education. However, the variability in the type of exercise and its dosage means that there is no clear evidence regarding the most optimal form of therapeutic exercise. AIM: The main objective of this study was to ascertain the effects produced by two different exercise interventions (supervised exercise therapy and laser-guided exercise therapy) and pain neuroscience education on postural control measured by the displacement center of pressure (CoP) and energy spectral density (ESD) in subjects with non-specific chronic low back pain. DESIGN: This is a single-blinded randomized clinical comparative controlled trial. SETTING: The study was carried out in different private physiotherapy care centers. POPULATION: We enrolled 60 subjects with non-specific chronic low back pain of at least 3-month duration, aged 18 to 45 years. METHODS: Both groups performed a total of 16 therapeutic exercise sessions and 8 pain neuroscience education sessions, with the laser-guided exercise therapy group performing laser-guided exercises. The main outcome measures evaluated were ESD and displacement of CoP measured at 3 different times (baseline, post-treatment, and 3 month follow-up). RESULTS: The most important differences for ESD and displacement of CoP variables were obtained for eyes open, unstable surface anteroposterior axis (F[2,92] = 7.36, p = 0.001, d = 0.71) and eyes closed, stable surface mediolateral axis (F[2,92] = 3.24, p < 0.001, d = 0.76). Further, time x group interactions showed significant statistical differences in both cases as well as significant differences between baseline and 3 month's follow-up. CONCLUSIONS Both exercise modalities (supervised exercise therapy and laser-guided exercise therapy) showed changes in variables related to postural control (displacement of CoP and ESD). However, the laser-guided exercise therapy program showed greater improvements in ESD.

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