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Flow diagram of participant selection. * Subjects with evidently submaximal performance on the CPET (ie not achieving volitional maximal effort), due to medical contraindications for maximal testing or measurement errors; ** Medical reasons were restrictions given by cardiologist and use of stair lift; *** eg never cycled before, use of electric bike.
Abbreviations: CPET, cardiopulmonary exercise testing; COVID-19, coronavirus disease 2019; IC, informed consent.
