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Cited by 14Cardiovascular and exercise physiologyBlood Pressure and Hypertension StudiesSleep and Work-Related Fatigue

Prior exercise lowers blood pressure during simulated night-work with different meal schedules

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Fullick, S., Morris, C., Jones, H., Atkinson, G.·2009·American Journal of Hypertension
DOI 10.1038/ajh.2009.91PMC PMC2781173
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Abstract

BACKGROUND: Shift-work and a sedentary lifestyle are risk factors for raised blood pressure (BP). Exercise can reduce BP in diurnally-active individuals, but it is unknown whether postexercise hypotension persists when people are active and eating at night. We present the first investigation into the acute effects of exercise on BP monitored during simulated night-work. METHODS: Nine normotensive participants, aged 20-42 years, completed at least two crossover trials beginning at 1800 hours. Between 1900 and 2000 hours, participants either rested or exercised at 50% peak oxygen uptake (VO(2peak)) and then remained awake throughout the night, completing various tasks until 0515 hours. Six participants completed a total of four trials in which they exercised or rested, whereas either one standardized (60 kJ/kg) meal at 2200 hours or two smaller (30 kJ/kg) meals at 2200 and 0200 hours were eaten. Systolic and diastolic BP, mean arterial pressure (MAP), heart rate (HR), and wrist activity were recorded every 30 min. RESULTS: Following exercise, MAP was significantly (P < 0.0005) lower throughout the night-shift compared with no prior exercise (95% confidence limits for reduction: 4-7 mm Hg). The postexercise reductions in systolic BP and MAP were not moderated by diet, but the reduction in diastolic BP was slightly greater when only one meal was eaten (P < 0.0005). BP was lower even though wrist activity and HR were significantly higher following exercise (P < 0.0005). CONCLUSIONS: These data indicate that prior exercise lowers BP throughout a subsequent 8-h night-shift in healthy individuals within the normotensive range. Therefore, regular low-intensity exercise might moderate the well-known association between shift-work participation and raised BP.

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  1. [35]Sidery MB Macdonald IA The effect of meal size on the cardiovascular responses to food ingestion Br J Nutr 1994 71 835 848 8031733

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Authors
Fullick, S., Morris, C., Jones, H., & Atkinson, G.
Affiliations
Liverpool John Moores University (GB)
ORCID
Venue
American Journal of Hypertension
Publisher
Oxford University Press (OUP)
Published
2009-08-01
Volume
22
Issue
8
Pages
835-841
ISSN
  • 0895-7061 (ISSN-L)
  • 1941-7225
DOI
10.1038/ajh.2009.91
PMC
PMC2781173
OpenAlex
W2030884577
Cited by
14
References
39
Citations by year
2023: 1 · 2022: 1 · 2020: 1 · 2019: 2 · 2016: 2 · 2013: 1 · 2012: 2
FWCI
4.90
Type
journal article
Language
en
Open access
Locations
  • American Journal of Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Teesside University Research Portal (Teesside University) (submittedVersion)
Funders
  • Cancer Research UK
  • National Institute for Health and Care Research
  • British Heart Foundation
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
post-exercise hypotension, blood pressure, night shift work, shift work, meal timing, meal frequency, low-intensity exercise, sedentary lifestyle, heart rate, normotensive subjects
MeSH terms
Adult, Blood Pressure, Circadian Rhythm, Eating, Female, Heart Rate, Humans, Male, Motor Activity, Oxygen Consumption, Risk Factors, Time Factors, Wrist, Anaerobic Threshold, Exercise, Cross-Over Studies, Young Adult

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