Table 2 Results from Multilevel Models of Daytime MVPA Minutes Predicting Night Sleep Variables.

From: Bidirectional, Daily Temporal Associations between Sleep and Physical Activity in Adolescents

  Sleep onset (midnight-centered time) Sleep offset (24-hour time) Sleep duration (minutes) Sleep maintenance efficiency (percentage)
B (SE) B (SE) B (SE) B (SE)
Intercept −4.48 (1.87)* 0.68 (1.85) 410.67 (77.37)*** 96.59 (3.86)***
Sex, Male (ref Female) 0.62 (0.14)*** 0.38 (0.13)** −16.56 (5.60)** −0.76 (0.28)**
Age 0.24 (0.12)* 0.42 (0.12)*** 4.01 (4.97) −0.30 (0.25)
Race, White, Non-Hispanic (ref)
Black, non-Hispanic −0.09 (0.21) −0.35 (0.21) −7.80 (8.76) −0.25 (0.44)
Hispanic −0.05 (0.23) 0.10 (0.23) 18.50 (9.36)* 0.01 (0.47)
Other −0.37 (0.25) −0.43 (0.25) 1.14 (10.21) −0.06 (0.52)
Mother’s Education, Less than High School (ref)
High School or Equivalent 0.13 (0.23) 0.03 (0.22) −7.50 (9.30) 0.12 (0.47)
Some College/Technical School 0.26 (0.20) 0.08 (0.20) −14.74 (8.39) 0.19 (0.42)
College or Graduate School −0.04 (0.28) −0.04 (0.28) 2.02 (11.52) 0.84 (0.57)
Family Structure, Biomother + Biofather (ref)
Other Living Arrangements −0.38 (0.25) −0.10 (0.25) 17.93 (10.34) −0.48 (0.52)
Biomother + New Partner −0.30 (0.19) −0.005 (0.19) 15.65 (7.88)* −0.97 (0.39)*
Biomother Only −0.16 (0.18) 0.12 (0.18) 9.98 (7.48) −0.63 (0.37)
Income to Poverty Threshold, >=300% (ref)
<49% 0.57 (0.26)* 0.65 (0.25)* 8.08 (10.59) −1.38 (0.53)**
50–99% 0.16 (0.23) 0.002 (0.23) −6.49 (9.54) 0.25 (0.48)
100–199% 0.21 (0.20) 0.21 (0.20) −3.52 (8.20) −0.52 (0.41)
200–299% −0.09 (0.23) −0.02 (0.22) −4.61 (9.24) 0.08 (0.47)
BMI 0.003 (0.003) −0.002 (0.003) −0.25 (0.11)* −0.001 (0.01)
Weekend (ref Weekday) 0.93 (0.07)*** 1.86 (0.08)*** 54.74 (4.88)*** 0.07 (0.13)
Daytime MVPA Minutes (between-person) −0.01 (0.003)*** −0.01 (0.003)*** −0.21 (0.11) 0.01 (0.01)
Daytime MVPA Minutes (within-person) −0.005 (0.001)*** 0.001 (0.001) 0.17 (0.08)* 0.01 (0.002)***
  1. Note. 2,249 daily observations were clustered within 417 adolescents. Results express the between- and within- relationship of daytime minutes in MVPA and night sleep variables while adjusting for covariates.
  2. MVPA is moderate-to-vigorous physical activity. Biomother, Biofather = Biological Mother and Biological Father. BMI is body mass index.
  3. *p < 0.05, **p < 0.01, ***p < 0.001.