Bath time breakthrough: new test spots hidden movements in SMA babies

This study aims to improve how doctors assess movement in infants with spinal muscular atrophy (SMA), a severe muscle-weakening disease. Researchers will use sensors to measure babies' movements in a special bathtub, where water helps reduce gravity's effects. The goal is to create a standardized test that can detect subtle movements and help track disease progression and treatment response. About 15 infants under 12 years old will participate, and the study will not change their regular care.