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Background : Combined exercise training has proven effective in preventing and treating sleep disorders among obese adults. However, structured progression of intensity in sleep parameters remains poorly investigated within this population.  Purpose : To verify the effects of non-periodized and linear periodization combined training on the sleep quality of obese adults.  Methods : This was a randomized controlled trial involving adults with body mass index ≥ 30 kg/m2, allocated to 3 groups: control (CG;  n  = 13), non-periodized training (NG;  n  = 9), and with linear periodization (PG;  n  = 13). Groups PG and NG trained for 16 weeks in 3 weekly sessions lasting of 60 minutes. The NG trained in 50–59% heart rate reserve (HRR) e 2 × 10–12 repetition maximum (RM) and the PG with progression in 3 mesocycles: 40–49%;50–59%; 60–69% HRR e 2x12-14; 2x10-12; 2 × 8–10 RM, with the total volume equated. Sleep quality was evaluated by the Pittsburgh Sleep Quality Index. For statistics, we used Generalized Estimation Equations considering p ≤ 0.05.  Results : Sleep latency was reduced in both training groups after intervention (NG-Δ = −25.56 minutes  p  = .028; PG-Δ = −22.23 minutes  p  = .035), while significant improvements in sleep efficiency were found only in the NG (Δ = 20.67%;  p  = .042).  Conclusion : Despite the NG’s apparent superiority, which model has the best sleep effects on obese adults cannot be stated. Hence, caution is needed while extrapolating the results.

Effects of Combined Training With Linear Periodization and Non-Periodization on Sleep Quality of Adults With Obesity