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📝 Enhanced Endurance Performance By Periodization Of Carbohydrate Intake

Twenty-one triathletes (V˙O2max: 58.7 ± 5.7 mL·min−1·kg−1) were divided into two groups: a “sleep-low” (SL) (n = 11) and a control (CON) group (n = 10) consumed the same daily carbohydrate (CHO) intake (6 g·kg−1·d−1) but with different timing over the day to manipulate CHO availability before and after training sessions. The SL strategy consisted of a 3-wk training–diet intervention comprising three blocks of diet–exercise manipulations: 1) “train-high” interval training sessions in the evening with high-CHO availability, 2) overnight CHO restriction (“sleeping-low”), and 3) “train-low” sessions with low endogenous and exogenous CHO availability. The CON group followed the same training program but with high CHO availability throughout training sessions (no CHO restriction overnight, training sessions with exogenous CHO provision).

Updated on May 6, 2020

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