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Continuous measurement of interstitial glycaemia in professional female UCI world tour cyclists undertaking a 9‐day cycle training camp

Ross Hamilton, Olivia McCarthy, Steve Bain Orcid Logo, Richard Bracken Orcid Logo

European Journal of Sport Science

Swansea University Authors: Ross Hamilton, Olivia McCarthy, Steve Bain Orcid Logo, Richard Bracken Orcid Logo

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DOI (Published version): 10.1002/ejsc.12201

Abstract

Nine cyclists (age: 26 ± 5 years, height: 168 ± 5 cm and mass 58.5 ± 4.5 kg) were observed using continuous glucose monitoring devices throughout a training camp. Interstitial glucose [iG] data were captured via the Abbott libre sense biosensor (Abbott Laboratories) and paired with the Supersapiens...

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Published in: European Journal of Sport Science
ISSN: 1746-1391 1536-7290
Published: Wiley 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa68108
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Abstract: Nine cyclists (age: 26 ± 5 years, height: 168 ± 5 cm and mass 58.5 ± 4.5 kg) were observed using continuous glucose monitoring devices throughout a training camp. Interstitial glucose [iG] data were captured via the Abbott libre sense biosensor (Abbott Laboratories) and paired with the Supersapiens software (TT1 Products Inc.). [iG] data were split into time ranges, that is, overall (24-hourly), day-time (06:00–23:59), night-time (00:00–05:59) and exercise. [iG] data were stratified into percentage of time, below range ([TBR] < 70 mg/dl), in range ([TIR] 70–140 mg/dl) and above range ([TAR] ≥ 141 mg/dl). Differences in diurnal and nocturnal data were analysed via repeated measures analysis of variance and paired t-tests where appropriate. p-value of ≤0.05 was accepted as significant. Riders spent an average of 3 ± 1% TAR, 93 ± 2% TIR and 8 ± 3% TBR. Mean 24 h [iG] was 93 ± 2 mg/dl with a coefficient of variation (CV) of 18 ± 1%. Mean (day: 95 ± 3 vs. night: 86 ± 3 mg/dl and p < 0.001) and CV (day: 18 ± 1 vs. night: 9 ± 1% and p < 0.001) in [iG] were higher during the day-time hours. TAR was greater during the day (day: 3 ± 1 vs. night: 0 ± 0% and p < 0.001) but TBR and TIR were similar. Glucose levels below the clinical range may have implications for those without diabetes and warrants further investigation.
Keywords: continuous glucose monitoring, endurance exercise, female athletes, glycaemia, professionalcyclists
College: Faculty of Science and Engineering