stress performance motivation mental skills sport pmc-status-qastatus 0 pmc-status-live yes pmc-status-embargo no pmc-status-released yes pmc-prop-open-access yes pmc-prop-olf no pmc-prop-manuscript no pmc-prop-legally-suppressed no pmc-prop-has-pdf yes pmc-prop-has-supplement no pmc-prop-pdf-only no pmc-prop-suppress-copyright no pmc-prop-is-real-version no pmc-prop-is-scanned-article no pmc-prop-preprint no pmc-prop-in-epmc yes pmc-license-ref CC BY Introduction Nowadays it is well known that psychological variables are quite significant aspects in sports performance, both in elite and amateur athletes ( Morris, 2000 ; MacNamara et al., 2010 ; Castilla and Ramos, 2012 ; Abdullah et al., 2016 ; Swann et al., 2017 ).
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