Low-energy laser therapy application on knee joints as an auxiliary treatment in patients with polyarticular juvenile idiopathic arthritis: a dual-arm randomized clinical trial

What the authors concluded

Per the mixed-model analysis of variance, the LLT group showed a statistically more favorable improvement in pain (P = .003, ηp2 = .014), fatigue perception (P = .004, ηp2 = .015), and functional status (P = .022, ηp2 = .09) across the three assessment occasions, as compared to the [exercise only] control group. However, no significant difference was demonstrated between both groups concerning pe