Children with Down Syndrome receive routine physiotherapy treatment in special education centers.

The orofacial treatment group receives therapeutic orofacial treatment in addition to routine physiotherapy treatment. For orofacial therapy, sessions will be conducted twice a week for eight weeks, lasting 30-45 minutes, totaling 16 sessions.

The therapeutic yoga group receives therapeutic yoga treatment and routine physiotherapy treatment. Sixteen sessions were planned twice a week for eight weeks, each 30-45 minutes.

Children with Down syndrome who receive routine physical therapy treatment in special education centers will undergo evaluation after eight weeks of treatment, followed by a control evaluation after 12 weeks.

The Pediatric Functional Independence Measure (WeeFIM): The WeeFIM consists of 18 items across 6 separate domains. These domains include self-care, sphincter control, transfers, mobility, communication, and social-cognitive evaluations. When answering the items in the WeeFIM sections, scoring is based on whether assistance is needed during the activity, and whether any assistive devices are required. The WeeFIM scale yields scores ranging from a minimum of 18 to a maximum of 126 points.

The Pediatric Eating Assessment Tool-10 (p-EAT-10) is a scale consisting of 10 items used to screen the severity of dysphagia symptoms. Each item is scored from 0 to 4 (0=No problem and 4=Severe Problem). Normative data indicate that a p-EAT-10 score of 4 or higher indicates a risk of swallowing disorder, with higher scores indicating more severe dysphagia symptoms.

The Children's Sleep Habits Questionnaire (CSHQ) form contains 33 items, including 8 subscales. The CSHQ assesses the following subscales: bedtime resistance, sleep onset delay, sleep duration, sleep anxiety, night waking, parasomnias, sleep-disordered breathing, and daytime sleepiness. The scale is filled out retrospectively by parents. A total score of 41 points is considered the cutoff point for the CSHQ, and scores above this threshold indicate that children are experiencing clinically significant sleep problems.

The Health-Related Quality of Life Scale-KIDSCREEN-27 form is drawn from the KIDSCREEN-52 and consists of 27 questions and 5 dimensions. The dimensions of KIDSCREEN-27 include physical well-being (5 items), psychological well-being (7 items), autonomy and relationships with parents (7 items), social support and peers (4 items), and school environment (4 items). In all KIDSCREEN questionnaires, items have a 5-point Likert-type response scale (never, seldom, sometimes, often, always). An increase in score indicates a better quality of life.