Gait initiation and termination strategies in patients with Prader-Willi syndrome.
Veronica Cimolin, Nicola Cau, Manuela Galli and 3 others
PMID 28535762WHAT IT FOUND
Adults with Prader-Willi syndrome started and stopped walking with slower weight shifts and longer transition times than healthy adults.
Compared with obese controls without PWS, they still showed slower side-to-side shifts when beginning to walk.
Key findings
01When starting to walk, adults with PWS moved their centre of pressure more slowly than both obese adults without PWS and healthy adults, especially side-to-side.
02When stopping walking, adults with PWS took longer to finish the task and shifted weight more slowly side-to-side than obese adults without PWS and healthy adults.
03The PWS group also showed lower values on some scaled centre-of-pressure path-length measures while starting to walk than both comparison groups.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only 12 adults with PWS were studied, so the pattern may not represent all adults with PWS. The study measured only the centre-of-pressure path, not joint movement or muscle forces, so it cannot identify which body parts caused the slower transitions. All participants had to walk independently without aids, so the findings do not apply to people with PWS who need walking aids. PWS participants scored above 24 on a cognitive screen, so people with more severe cognitive impairment were excluded. The groups were compared at one time point, so the study cannot show that PWS caused the movement pattern or that a programme would change it. The paper reports group differences, not clinical outcomes such as falls, so it does not show how these patterns affect daily safety.
The easy way to misread this
Do not read these movement differences as proof that a specific balance programme will reduce falls. The study described how 12 adults with PWS moved compared with controls, and it did not test treatment.