Table 4.

Coefficients of exercise allocation in ANCOVA models predicting polysomnographic outcomes

Outcome	Estimate for exercise allocation* (β)	Standard error (β)	95% Confidence interval		P
Total sleep time	−0.50	11.86	−24.09	23.10	0.97
Sleep onset latency	−1.15	3.39	−7.89	5.60	0.74
Wake after sleep onset	1.86		−11.32	15.04	0.78
Number of awakenings	−1.70	1.28	−4.24	0.84	0.19
Stage shift index	0.04	0.61	−1.18	1.26	0.95
N1 (% TST)	−1.4	0.91	−3.21	0.42	0.13
N2 (% TST)	0.94	1.64	−2.34	4.21	0.57
N3 (% TST)	0.55	1.32	−2.07	3.16	0.68
REM (% TST)	−0.02	1.10	−2.21	2.18	0.99
REM latency	4.20	10.76	−17.23	25.64	0.70

*Allocation was coded as follows: 1 = control, 2 = exercise.

All models used baseline values of the outcome as well as minimization factors (sex, age, PHQ9 score, and PSQI score) as covariates and allocation as the independent variable. The coefficient for allocation is the difference of the mean change score in the exercise group compared to the control group.

N1, stage one sleep, N2, stage two sleep, N3, stage three sleep, REM, rapid eye movement sleep, TST, total sleep time.