Diurnal variation of sports performance usually peaks in the late afternoon, coinciding with
increased body temperature. This circadian pattern of performance may be explained by the
effect of increased core temperature on peripheral mechanisms, as neural drive does not
appear to exhibit nycthemeral variation. This typical diurnal regularity has been reported in a
variety of physical activities spanning the energy systems, from Adenosine triphosphate-
phosphocreatine (ATP-PC) to anaerobic and aerobic metabolism, and is evident across all …