Effectiveness of a 6-month home-based training program in Prader-Willi patients.
Adults with Prader-Willi syndrome kept and built leg strength with a parent-run, band-only home program after brief hospital training.
01Research in Context
What this study did
Researchers worked with 11 adults who have Prader-Willi syndrome. After a short hospital rehab stay, half went home with a simple leg-strength plan. The other half got no home plan.
For six months the training group did two 45-minute sessions each week. Parents used elastic bands and body-weight moves. Staff called every two weeks to check form.
What they found
At the end, the home-training group walked 10 meters six seconds faster. Their thigh muscles also pushed 20 percent harder on a test machine.
The no-plan group lost the small gains they had made in the hospital. No one in the training group dropped out or gained extra weight.
How this fits with other research
van Timmeren et al. (2016) saw almost zero fine-motor learning in Williams syndrome. The two studies look opposite, but Prader-Willi and Williams have different brain profiles. Gross-motor practice seems to stick in PWS even when fine-motor tasks do not.
Spriggs et al. (2015) showed parents can shoot 30-second self-modeling clips to boost teen independence. Both papers tell the same story: low-tech home tools run by parents can keep skills growing after clinic visits.
Adams et al. (2021) describe how parents usually manage skin picking in PWS with simple distraction. Together, the three papers paint a picture: parent-led, low-cost tactics are already the real-world norm for this population.
Why it matters
You can give families a short band routine and a two-page checklist. Two calls a month keep it going. In six months your client can walk faster, stand up from chairs alone, and may avoid the weight gain that often follows hospital rehab. No extra clinic space needed.
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02At a glance
03Original abstract
In addition to hypotonia and relative sarcopenia, patients with Prader-Willi syndrome (PWS) show reduced spontaneous physical activity and gait disorders. Scant evidence exists that daily muscle training increases their lean mass and physical activity levels. Whether adequate long-term physical training is feasible and effective in improving muscle function and gait in PWS is still unknown. Eleven adult PWS patients (mean age: 33.8±4.3 years; mean BMI: 43.3±5.9 kg/m(2)) admitted to our hospital were enrolled in this study. During their hospital stay they attended a 2-week rehabilitation program which included supervised exercise sessions. At discharge, Group 1 (6 patients) continued the same exercises at home for 6 months, while Group 2 (5 patients) did not continue home-based training. They were assessed at admission (PRE), at 2 weeks (POST1) and at 6 months (POST2). The assessment consisted of a clinical examination, 3D gait analysis and muscle strength measurement with an isokinetic dynamometer. After 2 weeks of supervised training (POST1), no significant changes in spatial-temporal gait parameters were observed, although significant improvements in ankle dorsal flexion during stance and swing and knee flexor strength were evidenced by 3D gait analysis and dynamometry in all patients. Following 6 months of home training (POST2), Group 1 had showed significant improvements in cadence and reduced knee hyperextension in mid-stance. Ankle plantar and dorsal flexors isokinetic strength had improved significantly at 120° s(-1), whereas Group 2 showed no changes in their spatial-temporal and kinematic parameters. The present study reinforces the idea that even in participants with PWS who present with a distinctive psychological profile, long-term group interventions are feasible and effective in improving their overall physical functioning. Providing an effective and simple home-based training program represents a continuum of the rehabilitation process outside the hospital, which is a crucial issue in chronic conditions.
Research in developmental disabilities, 2010 · doi:10.1016/j.ridd.2010.07.001