Objectives: This study aims to evaluate the effects of methylphenidate (MPH) on sleep parameters and BMI in attention-deficit/hyperactivity disorder (ADHD) children. Methods: Eighty five ADHD children were enrolled and daily sleep diaries were evaluated after taking medication. This cross-sectional case-control study also included ninety five healthy children. BMI Z scores were measured at baseline and at last follow-up. Results: Eighty five patients (mean [standard deviation] age: 14,02 [±1,6] years, 65 (77%) males) were included. When we compared ADHD and healthy control group, we observed significant statistical difference between two groups on the mean total scores of CSHQ and PSQI (p<0,05). For CSHQ, subscales about sleep delay, sleep duration and daytime sleepiness are also significantly higher in ADHD group (p<0,05). For PSQI, subscales about sleep disturbance, sleep latency and subjective sleep quality differed significantly. MPH treatment was associated with a notional reduction in body mass index standard deviation scores (SDS). Conclusions: These findings indicate children with ADHD under stimulant treatment experience more sleep problems than healthy peers accorrding to both self and parent reports. MPH slightly descreased BMI-sds in this group of ADHD patients followed naturalistically over 32.2 months. Keywords: Methylphenidate, attention-deficit/hyperactivity disorder, sleep, body mass index, child
Corresponding Author: Turan S.