Advanced Neuromuscular Training Differentially Changes Performance on Visuomotor Reaction Tests and Single-leg Hop Tests in Patients with ACL Reconstruction.
Terese Chmielewski, Michael Obermeier, Adam Meierbachtol and 4 others
PMID 39502551WHAT IT FOUND
In 25 analyzed patients, five weeks of advanced neuromuscular training improved single-leg hop tests and reaction test speed, but reaction errors did not change.
Improvement was smaller on reaction tests than hop tests.
Key findings
01On the double-leg reaction test, correct touches increased significantly (p<0.001), while errors did not change significantly (p=0.637).
02On the single-leg reaction test, hop time improved significantly on both legs (p=0.003), but errors did not change significantly (p>0.05).
03Limb symmetry indexes on single-leg hop tests improved significantly (p<0.05), and effect sizes were larger for hop tests than for reaction tests.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only 25 of 43 enrolled patients were analyzed; four were excluded for missing pre-training data and 14 for missing post-training data, so the sample was small. There was no control group, so changes could be due to recovery over time or testing practice rather than the training program. The study had no power analysis, so it was not designed to detect small effects reliably. The advanced training program was cash-based, which may mean participants were more motivated or financially able than typical patients. Some dual-task challenges were built into the training, so it is unclear which part of the program affected reaction-test changes. Quadriceps strength was not measured, which limits interpretation of neural compensation.
The easy way to misread this
Do not read this as proof that advanced neuromuscular training prepares patients for sport dual-task demands. Reaction-test errors did not significantly change, and the small analyzed sample had no control group.