47


(a)


(b) Figure 3: Chromatograms showing the confirmation of clomiphene in a real sample (a) and the presence of its metabolites from a different real sample (b).


by many substances currently listed on the WADA Prohibited List. Indeed, the decreased perception of the athlete’s fatigue is being considered one of the major effects. The modulation of neuromuscular


fatigue with tDCS has been investigated by Cogiamanian et al. and showed an overall decrease of muscle fatigue, an improvement of the muscle endurance and an increase of motivation [10]. Other studies revealed that


exertion and exercise performance can be modulated by brain stimulation [11], such as the temporarily increase of isometric strength of shoulder rotators muscles [12] and quadriceps [13] after anodal tDCS.


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