Sleep medicine
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Randomized Controlled Trial
Effectiveness of evening phototherapy for insomnia is reduced by bright daytime light exposure.
To examine the effect of ambulatory daytime light exposure on phase delays and on the advances produced by timed exposure to bright evening or morning light. ⋯ Greater light exposure during the daytime may decrease the ability of evening light, but not morning light, exposure to engender meaningful changes of circadian phase.
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Symptoms of Restless Legs Syndrome (RLS) affect patients' quality and duration of sleep, which can have next day sequelae detrimental to daytime performance. To date, no measure sufficiently assesses such sequelae. This study aimed to develop a new self-reported outcome measure to assess the impact of disturbed sleep due to RLS on next day functioning and to support its content validity. ⋯ The RLS-NDI is an evaluative tool with demonstrated content validity.