Effect of sleep curtailment on dietary behavior and physical activity: A randomized crossover trial

Eri Tajiri; Eiichi Yoshimura; Yoichi Hatamoto; Hiroaki Tanaka; Seiya Shimoda

doi:10.1016/j.physbeh.2017.11.008

Effect of sleep curtailment on dietary behavior and physical activity: A randomized crossover trial

Physiol Behav. 2018 Feb 1:184:60-67. doi: 10.1016/j.physbeh.2017.11.008. Epub 2017 Nov 9.

Authors

Eri Tajiri¹, Eiichi Yoshimura², Yoichi Hatamoto³, Hiroaki Tanaka³, Seiya Shimoda⁴

Affiliations

¹ Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto 862-8502, Japan.
² Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto 862-8502, Japan. Electronic address: eyoshi@pu-kumamoto.ac.jp.
³ Fukuoka University Institute for Physical Activity, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
⁴ Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto 862-8502, Japan.

PMID: 29129611
DOI: 10.1016/j.physbeh.2017.11.008

Abstract

Our objective was to clarify the effect of sleep curtailment on energy intake (EI) and physical activity under free-living conditions. Participants were 16 healthy women aged 21-22years. A randomized crossover trial design was used to compare a short sleep condition (SS): 4h/night (2:00-6:00) and a control sleep condition (CS): 7h/night (23:00-6:00). Each condition comprised 3 consecutive nights. Sleep duration was assessed using a wristwatch-type accelerometer at home. All living activities except sleeping were free-living. Physical activity was assessed using a tri-axial accelerometer, and was categorized by intensity level (sedentary; sedentary to light; moderate to vigorous). Participants were asked to purchase and consume meals with visible nutrient information. EI was evaluated by adding values from these food labels. Mean sleep duration in the two conditions was significantly different (4.3±0.3 vs. 7.1±0.4h, p<0.01). For the shared wakefulness period in the two conditions (6:00-23:00), step counts and physical activity were not significantly different. Sedentary time (878±61 vs. 727±40min, p<0.01), and sedentary to light-intensity activity time (1122±18 vs. 932±63min, p<0.01) were significantly increased in SS (waking time, 06:00-02:00) compared with CS (waking time, 06:00-23:00). However, these significant effects were clearly attenuated after adjustment for awake time (p>0.05). Total EI was not significantly different between conditions (8.64±0.82 vs. 8.46±1.28MJ, p>0.05), nor were leptin levels (p>0.05), but insulin and cortisol levels after SS were significantly higher than after CS (p<0.05). In this study, physical activity was increased in the SS condition and attributed to differences in awake time between conditions. However, there were no differences in EI. Further studies to investigate the effect of sleep curtailment on weight gain through stress and insulin resistance are necessary.

Keywords: Energy intake; Insulin; Leptin; Physical activity; Sleep curtailment.

Publication types

Randomized Controlled Trial
Research Support, Non-U.S. Gov't

MeSH terms

Accelerometry
Body Composition
Cross-Over Studies
Energy Intake
Exercise / physiology*
Feeding Behavior / physiology*
Female
Healthy Volunteers
Humans
Hydrocortisone / blood
Insulin / blood
Sleep / physiology*
Sleep Deprivation / physiopathology*
Sleep Deprivation / psychology*
Visual Analog Scale
Wakefulness / physiology
Young Adult

Substances

Insulin
Hydrocortisone