Premium
Associations between sleep parameters and food reward
Author(s) -
McNeil Jessica,
Cadieux Sébastien,
Finlayson Graham,
Blundell John E.,
Doucet Éric
Publication year - 2015
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.12275
Subject(s) - morning , crossover study , sleep (system call) , aerobic exercise , body mass index , psychology , medicine , audiology , session (web analytics) , physical therapy , physical medicine and rehabilitation , alternative medicine , pathology , computer science , placebo , operating system , world wide web
Summary This study examined the effects of acute, isocaloric aerobic and resistance exercise on different sleep parameters, and whether changes in these sleep parameters between sessions were related to next morning food reward. Fourteen men and women (age: 21.9 ± 2.7 years; body mass index: 22.7 ± 1.9 kg m − ²) participated in three randomized crossover sessions: aerobic exercise; resistance exercise; and sedentary control. Target exercise energy expenditure was matched at 4 kcal kg −1 of body weight, and performed at 70% of VO 2peak or 70% of 1 repetition‐maximal. Sleep was measured (accelerometry) for 22 h following each session. The ‘wanting’ for visual food cues (validated computer task) was assessed the next morning. There were no differences in sleep parameters and food ‘wanting’ between conditions. Decreases in sleep duration and earlier wake‐times were significantly associated with increased food ‘wanting’ between sessions ( P = 0.001). However, these associations were no longer significant after controlling for elapsed time between wake‐time and the food reward task. These findings suggest that shorter sleep durations and earlier wake‐times are associated with increased food reward, but these associations are driven by elapsed time between awakening and completion of the food reward task.