@article{10_3389_fphys_2014_00073,
  title = {Monitoring training status with HR measures: do all roads lead to Rome?},
  author = {Martin Buchheit},
  journal = {Frontiers in Physiology},
  year = {2014},
  doi = {10.3389/fphys.2014.00073},
  url = {https://doi.org/10.3389/fphys.2014.00073}
}