Worse sleep quality predicts early drop out from physical exercise programs.

Area of Science:

• Exercise Physiology
• Sleep Science
• Behavioral Science

Background:

• Regular physical exercise (PE) is known to improve sleep quality (SQ).
• However, the impact of SQ on adherence to PE programs, particularly during the initial habit-formation phase, is less understood.
• Understanding this relationship is crucial for developing effective strategies to promote long-term exercise participation.

Purpose of the Study:

• To investigate whether sleep variables can predict the risk of dropout from PE programs.
• To examine this relationship during the critical first six weeks of gym enrollment, a key period for habit formation.
• To identify potential interventions for improving exercise adherence based on sleep status.

Main Methods:

• A cohort of 153 new gym members (mean age 33.6 ± 11.9 years) participated.
• Data collected included sociodemographics, health, sleep, physical activity, and circadian rhythmicity via questionnaires.
• PE attendance was objectively monitored using gym electronic records, and Cox regression analysis was used to assess dropout risk.

Main Results:

• Worse sleep quality was found to be a significant predictor of a higher risk of dropping out from PE programs (Hazard Ratio = 1.11; 95% CI = 1.02-1.21; p < 0.05).
• This association remained significant even after adjusting for other potential confounding variables.
• Other factors related to PE practice also influenced dropout risk.

Conclusions:

• Worse sleep quality is associated with an increased risk of early dropout from physical exercise programs in a formal gym setting.
• These findings underscore the importance of sleep quality in the initial stages of exercise habit formation.
• Addressing sleep issues may be a viable strategy to enhance adherence to physical exercise programs.