@article{NegraChaabeneSammoudetal.2020,
  author    = {Yassine Negra and Helmi Chaabene and Senda Sammoud and Olaf Prieske and Jason Moran and Rodrigo Ramirez-Campillo and Ali Nejmaoui and Urs Granacher},
  title     = {The increased effectiveness of loaded versus unloaded plyometric jump training in improving muscle power, speed, change of direction, and kicking-distance performance in prepubertal male soccer players},
  journal   = {International journal of sports physiology and performance : IJSSP},
  volume    = {15},
  number    = {2},
  pages     = {189 -- 195},
  doi       = {10.1123/ijspp.2018-0866},
  year      = {2020},
}