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Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application

Melitta McNarry Orcid Logo

Pediatric Exercise Science, Volume: 31, Issue: 2, Pages: 175 - 183

Swansea University Author: Melitta McNarry Orcid Logo

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DOI (Published version): 10.1123/pes.2018-0177

Abstract

Pulmonary oxygen uptake ( formula presented ) kinetics, which describes the aerobic response to near instantaneous changes in metabolic demand, provides a valuable insight into the control and coordination of oxidative phosphorylation during exercise. Despite their applicability to the highly sporad...

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Published in: Pediatric Exercise Science
ISSN: 0899-8493 1543-2920
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa45206
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first_indexed 2018-10-25T13:19:56Z
last_indexed 2019-06-05T10:57:09Z
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spelling 2019-05-28T11:15:09.5995987 v2 45206 2018-10-25 Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application 062f5697ff59f004bc8c713955988398 0000-0003-0813-7477 Melitta McNarry Melitta McNarry true false 2018-10-25 STSC Pulmonary oxygen uptake ( formula presented ) kinetics, which describes the aerobic response to near instantaneous changes in metabolic demand, provides a valuable insight into the control and coordination of oxidative phosphorylation during exercise. Despite their applicability to the highly sporadic habitual physical activity and exercise patterns of children, relatively little is known regarding the influence of internal and external stimuli on the dynamic formula presented response. Although insufficient evidence is available during moderate-intensity exercise, an age-related slowing of the phase 2 time constant (τ) and augmentation of the formula presented slow component appears to manifest during heavy-intensity exercise, which may be related to changes in the muscle phosphate controllers of oxidative phosphorylation, muscle oxygen delivery and utilization, and/or muscle fiber type recruitment patterns. Similar to findings in adults, aerobic training is associated with a faster phase 2 τ and smaller formula presented slow component in youth, independent of age or maturity, indicative of an enhanced oxidative metabolism. However, a lack of longitudinal or intervention-based training studies limits our ability to attribute these changes to training per se. Further, methodologically rigorous studies are required to fully resolve the interaction(s) between age, sex, biological maturity, and external stimuli, such as exercise training and exercise intensity and the dynamic formula presented response at the onset and offset of exercise. Journal Article Pediatric Exercise Science 31 2 175 183 0899-8493 1543-2920 1 5 2019 2019-05-01 10.1123/pes.2018-0177 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2019-05-28T11:15:09.5995987 2018-10-25T08:41:33.6827705 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Melitta McNarry 0000-0003-0813-7477 1 0045206-25102018085122.pdf mcnarry2018.pdf 2018-10-25T08:51:22.5600000 Output 618064 application/pdf Accepted Manuscript true 2019-11-21T00:00:00.0000000 true eng
title Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
spellingShingle Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
Melitta McNarry
title_short Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
title_full Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
title_fullStr Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
title_full_unstemmed Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
title_sort Oxygen Uptake Kinetics in Youth: Characteristics, Interpretation, and Application
author_id_str_mv 062f5697ff59f004bc8c713955988398
author_id_fullname_str_mv 062f5697ff59f004bc8c713955988398_***_Melitta McNarry
author Melitta McNarry
author2 Melitta McNarry
format Journal article
container_title Pediatric Exercise Science
container_volume 31
container_issue 2
container_start_page 175
publishDate 2019
institution Swansea University
issn 0899-8493
1543-2920
doi_str_mv 10.1123/pes.2018-0177
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences
document_store_str 1
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description Pulmonary oxygen uptake ( formula presented ) kinetics, which describes the aerobic response to near instantaneous changes in metabolic demand, provides a valuable insight into the control and coordination of oxidative phosphorylation during exercise. Despite their applicability to the highly sporadic habitual physical activity and exercise patterns of children, relatively little is known regarding the influence of internal and external stimuli on the dynamic formula presented response. Although insufficient evidence is available during moderate-intensity exercise, an age-related slowing of the phase 2 time constant (τ) and augmentation of the formula presented slow component appears to manifest during heavy-intensity exercise, which may be related to changes in the muscle phosphate controllers of oxidative phosphorylation, muscle oxygen delivery and utilization, and/or muscle fiber type recruitment patterns. Similar to findings in adults, aerobic training is associated with a faster phase 2 τ and smaller formula presented slow component in youth, independent of age or maturity, indicative of an enhanced oxidative metabolism. However, a lack of longitudinal or intervention-based training studies limits our ability to attribute these changes to training per se. Further, methodologically rigorous studies are required to fully resolve the interaction(s) between age, sex, biological maturity, and external stimuli, such as exercise training and exercise intensity and the dynamic formula presented response at the onset and offset of exercise.
published_date 2019-05-01T03:56:54Z
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score 11.012678

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