What They Did
Seventeen youth soccer players competing in the English U18 Premier League participated in this study.
All players took part in regular, full training during the study (8.5 h of pitch training and 2 h of gym training per week). The group was tested twice with 7-days between testing days. The following measures were obtained:
⇒ Subjective wellness (see HERE).
⇒ Countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ). For the DJ, contact time (DJ-CT), jump height (DJJH), and reactive strength index (DJ-RSI) were calculated.
⇒ PlayerLoad (PL) and individual planes of PL: anterior-posterior (PLAP), mediolateral (PLML), and vertical (PLV) were obtained from a 3, 4, or 5-min submaximal run.