Effects of the carbohydrate heater on physical performance in endurance racing: a systematic review
Abstract
Introduction: The gastrointestinal discomfort is associated with the ingestion of large amounts of carbohydrates during endurance exercises. Hereupon, the strategy of carbohydrates mouth rinse (CHO-MR) in sports performance has been recently studied. The purpose of this review is to summarize the results of studies that evaluated the effects of CHO-MR on endurance running sport performance-related outcomes. Materials ant Methods: The literature review was performed using adapted PRISMA protocol in January 2020 in three databases (SciELO, Pubmed, Scopus and Web of Science) in search of randomized clinical trials with endurance running (≥30 minutes or until exhaustion) with healthy adults in which analyzed the effects of CHO-MR on sport performance-related outcomes compared to placebo. Results: Twelve articles were analyzed that reveals an increase of 18.7 ± 19.8% in the 'time to exhaustion' (n=5/5) and of 5.0 ±2.3% in the 'distance covered' (n=3/7). In relation to the 'time trial time' there was a reduction of 4.86% (n=1/1) and in the peak speed there was an increase of 2.92% (n=1/1). In addition, the improvement in sports performance was consistent in studies with endurance trained runners (n=5). Studies that analyzed ‘perceived exertion’ did not find significant results (n = 9/9). Conclusion: The analyzed data suggests an improvement in endurance running sport performance-related outcomes with CHO-MR strategy in trained male runners.
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