Gymnastik- och idrottshögskolan, GIH

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Effects of prolonged sitting and physical activity breaks on measures of arterial stiffness and cortisol in adolescents
Swedish School of Sport and Health Sciences, GIH, Department of Physical Activity and Health. (Fysisk aktivitet och hjärnhälsa)ORCID iD: 0000-0001-9526-2967
Swedish School of Sport and Health Sciences, GIH, Department of Physical Activity and Health. Department of Surgical Sciences, Medical Epidemiology, Uppsala University Uppsala Sweden.ORCID iD: 0000-0001-7175-0093
Swedish School of Sport and Health Sciences, GIH, Department of Physical Activity and Health.ORCID iD: 0000-0002-8079-0596
Swedish School of Sport and Health Sciences, GIH, Department of Physiology, Nutrition and Biomechanics.ORCID iD: 0000-0002-0081-4691
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2023 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 112, no 5, p. 1011-1018Article in journal (Refereed) Published
Abstract [en]

Aim

In adults, prolonged periods of sitting have been linked to acute negative effects on vascular structure and function. The aim of this study was to evaluate the acute effects of physical activity (PA) breaks during prolonged sitting on arterial stiffness, cortisol and psychological factors in adolescents.

Methods

Adolescents underwent different short (3-min) breaks starting every 20 min, during 80 min of sitting on three separate days. Breaks were (A) social seated breaks (SOC), (B) low-intensity simple resistance activity PA breaks (SRA) and (C) moderate-intensity step-up PA breaks (STEP). The arterial stiffness measures were augmentation index (AIx), AIx@75 and pulse wave velocity (PWV). Cortisol was measured from saliva. Psychological factors were self-reported.

Results

Eleven girls and six boys (average age 13.6 ± 0.7 years) participated, with average baseline heart rates of 72 ± 11 bpm, systolic/diastolic blood pressure 111 ± 7/64 ± 6 mmHg and cortisol 10.9 ± 5.8 nmoL/L. PWV, cortisol and psychological factors did not change after any of the conditions. AIx@75 increased significantly (4.9 ± 8.7–9.2 ± 13.2) after the STEP intervention compared with SOC and SRA (time × condition p < 0.05).

Conclusion

Arterial stiffness increased after prolonged sitting with frequent, short step-up activity breaks. The results indicate potential important intensity-dependent effects of physical activity on vascular regulation in youth.

Place, publisher, year, edition, pages
John Wiley & Sons, 2023. Vol. 112, no 5, p. 1011-1018
Keywords [en]
AIx, PWV, activity breaks, adolescents, arterial stiffness, cortisol
National Category
Cardiac and Cardiovascular Systems Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-7487DOI: 10.1111/apa.16702ISI: 000933114700001PubMedID: 36740937OAI: oai:DiVA.org:gih-7487DiVA, id: diva2:1736863
Part of project
Physical Activity for Healthy Brain Functions in School Youth, Knowledge Foundation, Skandias Stiftelse Idéer för livetE-PABS - a centre of Excellence in Physical Activity, healthy Brain functions and Sustainability, Knowledge Foundation
Funder
Knowledge Foundation, 20160040
Note

Additional funding information: COOP Sweden, IKEA, Skandia, Skanska, Generation Pep, and Stockholm Consumer Cooperative Society

Available from: 2023-02-14 Created: 2023-02-14 Last updated: 2024-03-21Bibliographically approved

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Fernström, MariaHeiland, Emerald GKjellenberg, KarinPontén, MarjanTarassova, OlgaNyberg, GiselaHelgadóttir, BjörgEkblom, MariaEkblom, Örjan

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Fernström, MariaHeiland, Emerald GKjellenberg, KarinPontén, MarjanTarassova, OlgaNyberg, GiselaHelgadóttir, BjörgEkblom, MariaEkblom, Örjan
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Department of Physical Activity and HealthDepartment of Physiology, Nutrition and Biomechanics
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Acta Paediatrica
Cardiac and Cardiovascular SystemsPublic Health, Global Health, Social Medicine and Epidemiology

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