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When trials report improvements, they often appear over several weeks to months and are generally modest

There was a significant increase in serum TAC at week 9 in the LCR group (0.18 mmol/L, 95% CI 0.07, 0.28) but not in the PLA group (-0.02 mmol/L, 95% CI -0.13, 0.09)

This supports more efficient fat oxidation during sustained aerobic efforts, helps spare glycogen at submaximal intensities, and supports the cellular energy production that drives both training output and recovery

Subjects and methods Study design We conducted a two-sample MR study based on well-established large cohorts and consortia (Additional file 1: Table S1 and Additional file 2: Fig