Sleep duration, weekend catch-up sleep, and risk of obstructive sleep apnea in relation to handgrip strength

Purpose: This cross-sectional study aimed to evaluate whether weekday sleep duration, weekend catch-up sleep, and risk of obstructive sleep apnea are individually and in combination associated with handgrip strength.Methods: Data from the Korea National Health and Nutrition Examination Survey 2019, including weekday sleep duration, weekend catch-up sleep, STOP-BANG scores, relative handgrip strength (handgrip strength divided by body mass index), and confounding factors (sociodemographic factors, health behaviors, and health and nutri-tional status), were evaluated in 3678 Korean adults aged 40 to 80 years. Adequate (vs. inadequate) sleep pa-rameters were defined as weekday sleep duration (6-7 vs. <= 5 or >= 8 h), weekend catch-up sleep (presence vs. absence), and risk of obstructive sleep apnea (low vs. high based on STOP-BANG scores). Sex-specific quintiles of relative handgrip strength were categorized as high (highest 5th quintile) or low (lower 1st to 4th quintiles). A complex-sample logistic regression analysis was performed.Results: After adjusting for other sleep parameters and confounding variables, each adequate sleep parameter individually and collectively was associated with high relative handgrip strength (adjusted odds ratios [95% confidence interval], 1.43 [1.09, 1.89] for 6-7 h weekday sleep duration; 1.44 [1.10, 1.90] for low risk of obstructive sleep apnea; 1.72 [1.23, 2.40] for any two parameters; 1.81 [1.18, 2.79] for all parameters). The combination of adequate weekend catch-up sleep and obstructive sleep apnea risk had the highest odds ratio for high relative handgrip strength (2.36 [1.45, 3.83]).Conclusions: Adequate weekday sleep duration, weekend catch-up sleep, and low obstructive sleep apnea risk were individually and in combination associated with high handgrip strength.

Automated summary

This cross-sectional study aimed to evaluate the association between weekday sleep duration, weekend catch-up sleep, obstructive sleep apnea risk, and handgrip strength. The study analyzed data from 3678 Korean adults aged 40 to 80 years and found that adequate weekday sleep duration, weekend catch-up sleep, and low obstructive sleep apnea risk were individually and collectively associated with high handgrip strength.