Baseline Range of Motion, Strength, Motor Function, and Participation in Youth with Hutchinson-Gilford Progeria Syndrome.
Julie Malloy, Emily Berry, Annette Correia and 11 others
PMID 36628480WHAT IT FOUND
Youth with Hutchinson-Gilford Progeria Syndrome have universal joint stiffness and reduced grip strength compared to same-age peers.
However, strength matches their height, not their age. Walking endurance is the main activity limit, while balance remains largely intact.
Key findings
01All participants had multiple joint limitations in both upper and lower extremities, with older children showing more extensive stiffness.
02Grip and pinch strength were low compared to age-matched peers but closer to normal when compared to height-matched peers, suggesting deficits are due to small muscle size rather than neurological issues.
0385% of participants walked shorter distances than same-aged peers, but this dropped to 30% when compared to height-matched peers, indicating stature heavily influences walking endurance scores.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
No functional measures have been validated specifically for youth with HGPS; standard tests were used. Different therapists conducted testing over time, and no formal inter-rater reliability was established. Strength was only tested in three muscle groups, so a comprehensive profile is missing. Height-age comparisons may be skewed for very short children because the lowest available age norm was used as a floor. The sample size was small (38), and the study was descriptive without a control group.
Declared interests
The study was conducted by researchers affiliated with Boston Children's Hospital and The Progeria Research Foundation. The text does not explicitly state funding sources or financial conflicts of interest, but notes that data came from participants enrolled in clinical treatment trials run by the same group.
The easy way to misread this
Do not interpret low strength scores as evidence of neurological muscle weakness. The study found that strength deficits largely disappear when compared to height-matched norms, indicating the weakness is proportional to the child's small stature and muscle size, not a nerve problem.