TY - JOUR
T1 - What Role Does Sleep Play in Weight Gain in the First Semester of University?
AU - Roane, Brandy M.
AU - Seifer, Ronald
AU - Sharkey, Katherine M.
AU - Van Reen, Eliza
AU - Bond, Tamara L.Y.
AU - Raffray, Tifenn
AU - Carskadon, Mary A.
N1 - Funding Information:
Support was received from the National Institutes of Mental Health (R01MH079179) and the Sleep Research Society Foundation Elliot D. Weitzman, M.D. Research Grant. Tifenn Raffray received support from l’Institut Servier, France. The authors have no other financial disclosures or conflicts of interests.
Publisher Copyright:
© 2015, Taylor & Francis.
PY - 2015/11/2
Y1 - 2015/11/2
N2 - We hypothesized that shorter sleep durations and greater variability in sleep patterns are associated with weight gain in the first semester of university. Students (N = 132) completed daily sleep diaries for 9 weeks, completed the MEQ (chronotype) and CES-D (depressed mood) at week 9, and self-reported weight/height (weeks 1 & 9). Mean and variability scores were calculated for sleep duration (TST, TSTv), bedtime (BT, BTv), and wake time (WT, WTv). An initial hierarchical regression evaluated (block 1) sex, ethnicity; (block 2) depressed mood, chronotype; (block 3) TST; (block 4) BT, WT; and (block 5; R2 change = 0.09, p = 0.005) TSTv, BTv, WTv with weight change. A sex-by-TSTv interaction was found. A final model showed that ethnicity, TST, TSTv, and BTv accounted for 31% of the variance in weight change for males; TSTv was the most significant contributor (R2 change = 0.21, p < 0.001). Daily variability in sleep duration contributes to males' weight gain. Further investigation needs to examine sex-specific outcomes for sleep and weight.
AB - We hypothesized that shorter sleep durations and greater variability in sleep patterns are associated with weight gain in the first semester of university. Students (N = 132) completed daily sleep diaries for 9 weeks, completed the MEQ (chronotype) and CES-D (depressed mood) at week 9, and self-reported weight/height (weeks 1 & 9). Mean and variability scores were calculated for sleep duration (TST, TSTv), bedtime (BT, BTv), and wake time (WT, WTv). An initial hierarchical regression evaluated (block 1) sex, ethnicity; (block 2) depressed mood, chronotype; (block 3) TST; (block 4) BT, WT; and (block 5; R2 change = 0.09, p = 0.005) TSTv, BTv, WTv with weight change. A sex-by-TSTv interaction was found. A final model showed that ethnicity, TST, TSTv, and BTv accounted for 31% of the variance in weight change for males; TSTv was the most significant contributor (R2 change = 0.21, p < 0.001). Daily variability in sleep duration contributes to males' weight gain. Further investigation needs to examine sex-specific outcomes for sleep and weight.
UR - http://www.scopus.com/inward/record.url?scp=84943456016&partnerID=8YFLogxK
U2 - 10.1080/15402002.2014.940109
DO - 10.1080/15402002.2014.940109
M3 - Article
C2 - 25115969
AN - SCOPUS:84943456016
SN - 1540-2002
VL - 13
SP - 491
EP - 505
JO - Behavioral Sleep Medicine
JF - Behavioral Sleep Medicine
IS - 6
ER -