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Testo: <blockquote data-quote="sepica" data-source="post: 7788579" data-attributes="member: 2116"><p><h3>Effect of Acute and Chronic Oral l-Carnitine Supplementation on Exercise Performance Based on the Exercise Intensity: A Systematic Review</h3> <h3>5. Conclusions</h3><p>In this systematic review, evidence revealed that both acute and chronic l-C supplementation could have positive effects on high-intensity (≥80% ˙VO2 max) performance exercise outcomes. In particular, doses of 3 to 4 g of l-C or GPL-C ingested between 60 and 90 min before exercise could improve the lactate threshold and achieve lower levels of perceived exertion during incremental tests until exhaustion, as well as increasing peak and average power in the Wingate cycle ergometer test. Likewise, doses of 2 to 2.72 g/day of l-C for longer periods up to 9 to 24 weeks also resulted in lower blood lactate accumulation and scale of perceived exertion, along with increases in work capacity in “all out” tests, peak power in a Wingate test, and the number of repetitions and volume lifted in leg press exercises.</p><p></p><p>On the other hand, supplementation with 2.72 to 3 g/day of l-C with or without CHO intake for 4 to 24 weeks did not present improvements in performance parameters during moderate-intensity exercise (50–79% ˙VO2 max). Likewise, doses of 2 to 3 g of l-C ingested between 30 min to 3 h before exercise do not appear to be effective when it comes to improvements in moderate-intensity exercise performance.</p></blockquote><p></p>

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