The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift

Crystal Leigh Grant, Jillian Dorrian, Alison Maree Coates, Maja Pajcin, David John Kennaway, Gary Allen Wittert, Leonie Kaye Heilbronn, Chris Della Vedova, Charlotte Cecilia Gupta, Siobhan Banks

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study examined the impact of eating during simulated night shift on performance and subjective complaints. Subjects were randomized to eating at night (n=5; 23.2 ± 5.5 y) or not eating at night (n=5; 26.2 ± 6.4 y). All participants were given one sleep opportunity of 8 h (22:00 h-06:00 h) before transitioning to the night shift protocol. During the four days of simulated night shift participants were awake from 16:00 h-10:00 h with a daytime sleep of 6 h (10:00 h-16:00 h). In the simulated night shift protocol, meals were provided at ≈0700 h, 1900 h and 0130 h (eating at night); or ≈0700 h, 0930 h, 1410 h and 1900 h (not eating at night). Subjects completed sleepiness, hunger and gastric complaint scales, a Digit Symbol Substitution Task and a 10-min Psychomotor Vigilance Task. Increased sleepiness and performance impairment was evident in both conditions at 0400 h (p<0.05). Performance impairment at 0400 h was exacerbated when eating at night. Not eating at night was associated with elevated hunger and a small but significant elevation in stomach upset across the night (p<0.026). Eating at night was associated with elevated bloating on night one, which decreased across the protocol. Restricting food intake may limit performance impairments at night. Dietary recommendations to improve night-shift performance must also consider worker comfort.

LanguageEnglish
Pages423-436
Number of pages14
JournalIndustrial Health
Volume55
Issue number5
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Circadian misalignment
  • Hunger
  • Performance
  • Psychomotor vigilance
  • Shift-work
  • Sleep loss
  • Sleepiness
  • Timed eating

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Cite this

Grant, Crystal Leigh ; Dorrian, Jillian ; Coates, Alison Maree ; Pajcin, Maja ; Kennaway, David John ; Wittert, Gary Allen ; Heilbronn, Leonie Kaye ; Vedova, Chris Della ; Gupta, Charlotte Cecilia ; Banks, Siobhan. / The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift. In: Industrial Health. 2017 ; Vol. 55, No. 5. pp. 423-436.
@article{107b66b6c2b242108bf687b0a563a4ac,
title = "The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift",
abstract = "This study examined the impact of eating during simulated night shift on performance and subjective complaints. Subjects were randomized to eating at night (n=5; 23.2 ± 5.5 y) or not eating at night (n=5; 26.2 ± 6.4 y). All participants were given one sleep opportunity of 8 h (22:00 h-06:00 h) before transitioning to the night shift protocol. During the four days of simulated night shift participants were awake from 16:00 h-10:00 h with a daytime sleep of 6 h (10:00 h-16:00 h). In the simulated night shift protocol, meals were provided at ≈0700 h, 1900 h and 0130 h (eating at night); or ≈0700 h, 0930 h, 1410 h and 1900 h (not eating at night). Subjects completed sleepiness, hunger and gastric complaint scales, a Digit Symbol Substitution Task and a 10-min Psychomotor Vigilance Task. Increased sleepiness and performance impairment was evident in both conditions at 0400 h (p<0.05). Performance impairment at 0400 h was exacerbated when eating at night. Not eating at night was associated with elevated hunger and a small but significant elevation in stomach upset across the night (p<0.026). Eating at night was associated with elevated bloating on night one, which decreased across the protocol. Restricting food intake may limit performance impairments at night. Dietary recommendations to improve night-shift performance must also consider worker comfort.",
keywords = "Circadian misalignment, Hunger, Performance, Psychomotor vigilance, Shift-work, Sleep loss, Sleepiness, Timed eating",
author = "Grant, {Crystal Leigh} and Jillian Dorrian and Coates, {Alison Maree} and Maja Pajcin and Kennaway, {David John} and Wittert, {Gary Allen} and Heilbronn, {Leonie Kaye} and Vedova, {Chris Della} and Gupta, {Charlotte Cecilia} and Siobhan Banks",
year = "2017",
month = "1",
day = "1",
doi = "10.2486/indhealth.2017-0047",
language = "English",
volume = "55",
pages = "423--436",
journal = "Industrial Health",
issn = "0019-8366",
publisher = "National Institute of Industrial Health",
number = "5",

}

Grant, CL, Dorrian, J, Coates, AM, Pajcin, M, Kennaway, DJ, Wittert, GA, Heilbronn, LK, Vedova, CD, Gupta, CC & Banks, S 2017, 'The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift', Industrial Health, vol. 55, no. 5, pp. 423-436. https://doi.org/10.2486/indhealth.2017-0047

The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift. / Grant, Crystal Leigh; Dorrian, Jillian; Coates, Alison Maree; Pajcin, Maja; Kennaway, David John; Wittert, Gary Allen; Heilbronn, Leonie Kaye; Vedova, Chris Della; Gupta, Charlotte Cecilia; Banks, Siobhan.

In: Industrial Health, Vol. 55, No. 5, 01.01.2017, p. 423-436.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The impact of meal timing on performance, sleepiness, gastric upset, and hunger during simulated night shift

AU - Grant, Crystal Leigh

AU - Dorrian, Jillian

AU - Coates, Alison Maree

AU - Pajcin, Maja

AU - Kennaway, David John

AU - Wittert, Gary Allen

AU - Heilbronn, Leonie Kaye

AU - Vedova, Chris Della

AU - Gupta, Charlotte Cecilia

AU - Banks, Siobhan

PY - 2017/1/1

Y1 - 2017/1/1

N2 - This study examined the impact of eating during simulated night shift on performance and subjective complaints. Subjects were randomized to eating at night (n=5; 23.2 ± 5.5 y) or not eating at night (n=5; 26.2 ± 6.4 y). All participants were given one sleep opportunity of 8 h (22:00 h-06:00 h) before transitioning to the night shift protocol. During the four days of simulated night shift participants were awake from 16:00 h-10:00 h with a daytime sleep of 6 h (10:00 h-16:00 h). In the simulated night shift protocol, meals were provided at ≈0700 h, 1900 h and 0130 h (eating at night); or ≈0700 h, 0930 h, 1410 h and 1900 h (not eating at night). Subjects completed sleepiness, hunger and gastric complaint scales, a Digit Symbol Substitution Task and a 10-min Psychomotor Vigilance Task. Increased sleepiness and performance impairment was evident in both conditions at 0400 h (p<0.05). Performance impairment at 0400 h was exacerbated when eating at night. Not eating at night was associated with elevated hunger and a small but significant elevation in stomach upset across the night (p<0.026). Eating at night was associated with elevated bloating on night one, which decreased across the protocol. Restricting food intake may limit performance impairments at night. Dietary recommendations to improve night-shift performance must also consider worker comfort.

AB - This study examined the impact of eating during simulated night shift on performance and subjective complaints. Subjects were randomized to eating at night (n=5; 23.2 ± 5.5 y) or not eating at night (n=5; 26.2 ± 6.4 y). All participants were given one sleep opportunity of 8 h (22:00 h-06:00 h) before transitioning to the night shift protocol. During the four days of simulated night shift participants were awake from 16:00 h-10:00 h with a daytime sleep of 6 h (10:00 h-16:00 h). In the simulated night shift protocol, meals were provided at ≈0700 h, 1900 h and 0130 h (eating at night); or ≈0700 h, 0930 h, 1410 h and 1900 h (not eating at night). Subjects completed sleepiness, hunger and gastric complaint scales, a Digit Symbol Substitution Task and a 10-min Psychomotor Vigilance Task. Increased sleepiness and performance impairment was evident in both conditions at 0400 h (p<0.05). Performance impairment at 0400 h was exacerbated when eating at night. Not eating at night was associated with elevated hunger and a small but significant elevation in stomach upset across the night (p<0.026). Eating at night was associated with elevated bloating on night one, which decreased across the protocol. Restricting food intake may limit performance impairments at night. Dietary recommendations to improve night-shift performance must also consider worker comfort.

KW - Circadian misalignment

KW - Hunger

KW - Performance

KW - Psychomotor vigilance

KW - Shift-work

KW - Sleep loss

KW - Sleepiness

KW - Timed eating

UR - http://www.scopus.com/inward/record.url?scp=85031006727&partnerID=8YFLogxK

U2 - 10.2486/indhealth.2017-0047

DO - 10.2486/indhealth.2017-0047

M3 - Article

VL - 55

SP - 423

EP - 436

JO - Industrial Health

T2 - Industrial Health

JF - Industrial Health

SN - 0019-8366

IS - 5

ER -