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. 2013 Sep 18;8(9):e75399. doi: 10.1371/journal.pone.0075399

Figure 5. Mean and SEM values of integrated electromyography of the vastus lateralis expressed as a percentage of maximal voluntary contraction (MVC) every 200 m during the 4000-m cycling time trial in the caffeine (CAF) and placebo (PLA) conditions (n = 6).

Figure 5