Background: It is commonly believed that sleep duration in the population h
as been declining gradually. Whereas sleep restriction in the laboratory in
duces sleepiness and mood disturbances, it is not certain whether a short s
leep duration impairs the quality of everyday life.
Methods: Using population-based data, we explored whether greater habitual
sleep duration is a predictor of better health-related quality of life, mea
sured by the Quality of Well-Being (QWB) scale. The relationships between Q
WB and several potential correlates were examined in a stepwise linear regr
ession analysis.
Results: Neither subjective nor actigraphic sleep duration were associated
with QWB. Greater quality of well-being was associated with greater sleep s
atisfaction, younger age, less obesity, non-Hispanic White ethnicity, and g
reater experienced illumination.
Conclusion: These data suggest that increasing sleep duration may not direc
tly improve quality of life, despite evidence that curtailment of nocturnal
sleep is associated with fatigue.