Harness-based Mobility Intervention for Infants With Down Syndrome

This study is looking at a body weight supported harness to help infants with Down syndrome (DS) develop mobility, like crawling and walking. These skills are important for exploring and learning. The study aims to see if using a harness can help infants with DS move more, communicate better, and interact socially. Researchers want to understand if this harness system is practical for families and how to best measure its effects. You might be able to join if your child has a confirmed diagnosis of Trisomy 21 (Down syndrome), is younger than 24 months, speaks English at home, can sit without help, and isn't yet taking independent steps. The study is currently unclear on its recruitment status.

Study design
This study is an interventional study with a planned enrollment of 6 participants. It is not specified if it is randomized or blinded.
What's involved
You and your child will have 12 observations over 6 months, with one in-person and one virtual (Zoom) visit each month. You will use the harness for 30 minutes a day, 5 days a week, for one month and keep a daily log. Your child will also have assessments like the Bayley Scales of Infant and Toddler Development-4.
Compensation
Not stated in the trial record.
Follow-up
Participants will be observed for 6 months, with primary outcomes measured at 6 months.

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NCT06219863

Harness-based Mobility Intervention for Infants With Down Syndrome

Recruiting
NAUp to 2Interventional
Boston University Charles River Campus
~6 participants
Updated 2026-07-24 on ClinicalTrials.gov
What's tested:Body weight supported harness

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Mean posture duration in seconds
Measured over 6 months
+10 more outcomes measured
Down Syndrome
1 sites across 1 states
Massachusetts1
  • Jana Iverson, PhD · PRINCIPAL_INVESTIGATOR · Boston University
  • Nicole Baumer, MD · PRINCIPAL_INVESTIGATOR · Boston Children's Hospital

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Eligibility criteria

Inclusion

confirmed diagnosis of Trisomy 21
younger than 24 months
English is the primary language of the home (due to use of standardized language assessments normed on English-speaking children)
able to sit without support
not yet taking any independent steps.

Exclusion

Mosaic or Translocation Down syndrome
severe, uncontrolled medical problems (including heart disease with cardiovascular instability, uncontrolled epilepsy)
severe uncorrected hearing or vision impairments
  • Mean posture duration in seconds6 months

    Average time spent in supine, prone, sitting, standing

  • Mean number of locomotion bouts6 months

    Mean instances of crawling, cruising, walking, or other forms of locomotion

  • Mean time spent in contact with objects6 months

    Average time infants spend touching objects

  • Mean number of different objects contacted6 months

    Average number of unique objects touched

  • Mean number of vocalizations6 months

    Average number of speech-like sound productions

  • Mean number of gestures6 months

    Average number of gestures

  • Proportion of directed vocalizations6 months

    Proportion of total vocalizations accompanied by looking to the caregiver

  • Proportion of directed gestures6 months

    Proportion of total gestures accompanied by looking to the caregiver

  • Bayley Scales of Infant Development-4Study entry, 3 months, 6 months

    Comprehensive, standardized measure of general development for children from 1-42 months, with five subscales: Cognitive, Language, Motor, Social-Emotional, and Adaptive Behavior. Raw scores will be used. Minimum score is 0; there is no maximum score. Higher scores indicate a better outcome.

  • Early Social Communication ScalesStudy entry, 3 months, 6 months

    Structured experimenter-administered observation of nonverbal communication skills: assesses joint attention, requesting, and social interaction skills. Minimum score is 0. There is no maximum score. Higher scores mean a better outcome.

  • MacArthur-Bates Communication Development Inventory: Words & GesturesStudy entry, 3 months, 6 months

    Parent questionnaire identifying words that the child only understands and those that s/he both says and understands as well as production of early gestures (e.g., showing, pointing) and actions (e.g., games, routines). There are seven subscales. Raw scores will be reported for each one, and all have a minimum score of 0. Higher scores mean better outcomes. Words Understood (maximum score = 396) Words Produced (maximum score = 396) First Communicative Gestures (maximum score = 12) Games and Routines (maximum score = 6) Actions with Objects (maximum score = 17) Pretending to be a Parent (maximum score = 13) Imitating Other Adult Actions (maximum score = 15)