Muscle glycogen unavailability and fat oxidation rate during exercise: Insights from McArdle disease.

"This case–control study was approved by the ethics committee of the Research Institute of the Hospital 12 de Octubre (Madrid, Spain; reference #16/081) and adhered to the tenets of the Declaration of Helsinki , except for registration in a database. Participants were informed of the aims and procedures of the study, as well as the possible risks and benefits, giving their written consent. Assessment took place during 2019 (patients) and 2021 (controls) at the Faculty of Sports Sciences of Universidad Castilla‐La Mancha (Toledo, Spain). Competing interests The authors declare that they have no competing interests."

"Funding Research by the IA and CR‐L group is funded by the Biomedical Research Networking Centre on Frailty and Healthy Aging (CIBERFES, CB16/10/00314 and CB16/10/00477). IR‐G is supported by a postdoctoral contract from Universidad de Castilla–La Mancha (2021/5937). PLV is supported by a Sara Borrell contract from Instituto de Salud Carlos III (CD21/00138). Research by AL and TP is funded by the Spanish Ministry of Economy and Competitiveness and Fondos FEDER (PI18/00139 and PI19/01313, respectively)."