Leg Movements during Sleep and Respiratory Events are not Causally Linked

I thank Dr. Walters for his thoughtful Letter to the Editor [1] which allows me to discuss additional aspects of the much-debated link between respiratory events and leg movements during sleep. Dr. Walters argues that the new World Association of Sleep Medicine (WASM) rules [2] for respiratory-related leg movements (in particular, the option to count movements that start up to 10.25 seconds after a sleep disordered breathing event), present at least two problems (see reference 1).

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