Table 1 Participant characteristics and energy balance (by treatment week).

From: The impact of insufficient sleep on dietary choices and physical activity behaviors: evidence from a randomized cross-over trial

Demographic characteristics

Participant-specific characteristics

 Age (years)

19.88 (1.97)

 

 Sex (proportion gemale)

0.55 (0.50)

 

 Caucasian (proportion)

0.89 (0.31)

 

 Body Mass Index

25.18 (5.50)

 

 Morningness-eveningness score

13.60 (3.04)

 

 Cognitive reflection task score

2.65 (1.78)

 

Sleep and energy balance measures (by treatment week)

 

WR

SR

Sleep measures (actigraphy measured)

 Average 24-hours total sleep time (minutes)

443.79 (35.26)

323.20 (25.92)

 Sleep efficiency (% of rest interval)

85.13 (5.56)

87.87 (5.08)

 Night-night sleep time variability

71.06 (51.50)

53.25 (38.83)

 Night-night sleep efficiency variability

7.79 (4.91)

6.97 (4.55)

Dietary intake (self-reported)

 Daily Kcalories

2058.95 (634.38)

2082.04 (632.87)

 Daily fat (grams)

87.86 (31.55)

87.91 (29.99)

 Daily sugar (grams)

91.65 (40.03)

93.29 (45.04)

 Daily protein (grams)

82.09 (38.47)

79.21 (37.88)

 Daily caffeine (milligrams)

85.09 (82.90)

105.82 (94.85)

Physical activity (actigraphy measured)

 Activity counts per minute (wake-hours)

258.72 (74.24)

234.54 (68.13)

 Sedentary physical activity (proportion of wake time)

0.35 (0.10)

0.40 (0.10)

 Light physical activity (proportion of wake time)

0.41 (0.05)

0.39 (0.06)

 Moderate physical activity (proportion of wake time)

0.23 (08)

0.21 (0.07)

 Vigorous physical activity (proportion of wake time)

0.01 (01)

0.01 (0.01)

 Bouts of sitting (> 30 consecutive sedentary minutes)

5.86 (3.82)

7.82 (4.92)

  1. Means values (or proportions as indicated) shown with standard deviations in parentheses. Night-Night variability measures (sleep time and efficiency) examine variability during the treatment week of each measure (see43,44,45). Following this previous research, we calculate the night-to-night variability of outcome measure X across n total days/nights of data as follows.
  2. N2N variability of X = \(\:\sqrt{\frac{{\left({X}_{2}-{X}_{1}\right)}^{2}+{\left({X}_{3}-{X}_{2}\right)}^{2}\:+..\dots\:\:+\:{\left({X}_{n}-{X}_{n-1}\right)}^{2}}{(n-1)}}\)