Match duration: the impact of 5 substitutes

MAS Test in Football Pre-Season: Assessing fitness levels

Using Heart Rate Variability (HRV) to determine physical fitness

Tapering: peak performance at the end of the season

Raymond Verheijen and his block periodization

Heart Rate TRIMP: what is the evidence?

Measuring heart rate is one of the most popular ways of monitoring load in team sports. If the heart rate of players were high during a session, we assume that it was a physically challenging session and vice versa.