Related Experiment Videos
The relationship between lifestyle regularity and subjective sleep quality
Timothy H Monk1, Charles F Reynolds, Daniel J Buysse
1Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA. monkth@msx.upmc.edu
Chronobiology International
|March 18, 2003
Summary
Maintaining a regular lifestyle, assessed by the Social Rhythm Metric (SRM), is linked to better sleep quality, as measured by the Pittsburgh Sleep Quality Index (PSQI). Higher lifestyle regularity correlates with fewer reported sleep problems in healthy adults.
Area of Science:
- Chronobiology
- Sleep Science
- Psychometrics
Background:
- Lifestyle regularity is crucial for health.
- The Social Rhythm Metric (SRM) assesses lifestyle regularity.
- The Pittsburgh Sleep Quality Index (PSQI) measures subjective sleep quality.
Purpose of the Study:
- To investigate the relationship between lifestyle regularity and subjective sleep quality.
- To determine if higher lifestyle regularity is associated with better sleep.
- To utilize both standard (SRM-17) and shortened (SRM-5) versions of the SRM.
Main Methods:
- A sample of 100 healthy adults (ages 19-49) participated.
- Lifestyle regularity was measured using the SRM (SRM-17 and SRM-5) over a two-week period.
- Subjective sleep quality was assessed using the PSQI.
Main Results:
- A significant negative correlation (rho = -0.4, p < 0.001) was found between SRM scores and PSQI scores.
- Individuals with higher lifestyle regularity reported fewer sleep problems.
- Categorical analysis showed twice the proportion of 'poor sleepers' in the 'irregular types' group.
Conclusions:
- There is a significant association between lifestyle regularity and better subjective sleep quality.
- Higher regularity in daily routines may contribute to improved sleep.
- Further research is needed to establish the causal direction of this relationship.