?url_ver=Z39.88-2004&rft_id=doi%3A10.1080%2F02640414.2016.1258481&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=L%C3%B3pez-Samane%2C+%C3%81lvaro&rft.aufirst=%C3%81lvaro&rft.aulast=L%C3%B3pez-Samane&rft.issn=0264-0414&rft.title=Journal+of+Sports+Sciences&rft.volume=35&rft.pages=2121-2128&rft.issue=21&rft.date=2017&rft.atitle=Circadian+rhythm+effect+on+physical+tennis+performance+in+trained+male+players&rft.genre=article