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Linear regression graphs between PSQI global score, total sleep time, sleep efficiency and wake after sleep onset with lean mass (Panels A, B, C, and D, respectively) and with LMI (Panels E, F, G, and H, respectively). β—non-standardised linear regression coefficient; R2—Coefficient of determination; p value. Abbreviations: PSQI—Pittsburgh sleep quality index, LMI—lean mass index.
