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. 2022 Aug 11;122(11):2393–2401. doi: 10.1007/s00421-022-05019-w

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Fig. 1 — Breath ¹³CO₂ enrichment during exercise with ingestion of CHO at different rates (90 and 120 g h⁻¹) and different ¹³C natural enrichment (low or high). *Denotes significant difference between 120 g HIGH and 90 g HIGH