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The effects of carbohydrate intake and muscle glycogen content on self-paced intermittent-sprint exercise despite no knowledge of carbohydrate manipulation
How carbohydrate intake and muscle energy levels affect self-paced sprint exercise when athletes don’t know their carbohydrate status
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Abstract
Pre-ISE muscle glycogen was greater in the high carbohydrate condition (597 ± 115 mmol kg dry weight) compared to the low carbohydrate condition (318 ± 72 mmol kg dry weight).
- High carbohydrate ingestion led to a 4.9% increase in total distance covered during intermittent-sprint exercise compared to low carbohydrate ingestion.
- A greater hard running distance of 8.1% was observed in the high carbohydrate condition.
- Pre-exercise blood glucose levels were higher for the low carbohydrate condition but lower post-exercise compared to the high carbohydrate condition.
- Maximal voluntary torque, voluntary activation, heart rate, and rating of perceived exertion did not differ between high and low carbohydrate conditions.
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