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Effect of High-Intensity Training and Asthma on the VO2 Kinetics of Adolescents
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Charles Winn,
Gwyneth Davies ,
William Eddolls,
Kelly Mackintosh
Medicine & Science in Sports & Exercise, Volume: 52, Issue: 6, Pages: 1322 - 1329
Swansea University Authors:
Melitta McNarry , Charles Winn, Gwyneth Davies , William Eddolls, Kelly Mackintosh
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DOI (Published version): 10.1249/mss.0000000000002270
Abstract
Purpose High-intensity interval training (HIIT) represents a potent stimulus to the dynamic oxygen uptake (V[Combining Dot Above]O2) response in adults but whether the same is evident in youth is unknown. HIIT has also been suggested to place a lower demand on the respiratory system, decreasing the...
| Published in: | Medicine & Science in Sports & Exercise |
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| ISSN: | 0195-9131 |
| Published: |
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa53141 |
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| Abstract: |
Purpose High-intensity interval training (HIIT) represents a potent stimulus to the dynamic oxygen uptake (V[Combining Dot Above]O2) response in adults but whether the same is evident in youth is unknown. HIIT has also been suggested to place a lower demand on the respiratory system, decreasing the likelihood of exacerbation in those with respiratory conditions, such as asthma.Methods Sixty-nine adolescents (13.6±0.9 years; 36 asthma) took part, 35 of which (17 asthma) participated in a 30-minute HIIT intervention three-times/week for six months. Each participant completed an incremental ramp test to volitional exhaustion and three heavy-intensity constant work-rate tests to determine the dynamic oxygen uptake (V[Combining Dot Above]O2), heart rate (HR) and deoxyhaemoglobin ([HHb]) response at baseline, mid-intervention, post-intervention and at a three-month follow-up.Results There was no influence of asthma at baseline or in response to the intervention. Participants in the intervention group demonstrated a faster V[Combining Dot Above]O2 time constant (τp) post-intervention (intervention: 29.2±5.7 vs. control: 34.2±6.5 s; P=0.003), with these differences maintained at follow-up (intervention: 32.5±5.5 vs. control: 37.3±8.7 s; P=0.008). The intervention was associated with a speeding of the [HHb] τ (Pre: 20.1±4.7 vs. Post: 18.2±4.1 s; P=0.05), compared to a slowing over the same time period in the control participants (Pre: 17.9±4.9 vs. Post: 20.1±4.6 s; P=0.012). HR kinetics were not altered (Pre: 46.5±12.2 vs. Post: 47.7±11.1 s; P=0.98).Conclusion These findings highlight the potential utility of school-based HIIT as a strategy to enhance the V[Combining Dot Above]O2 kinetics of youth, regardless of the presence of asthma. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
6 |
| Start Page: |
1322 |
| End Page: |
1329 |