https://www.taylorfrancis.com/chapters/edit/10.4324/9781003123835-16/statistical-considerations-biological-mechanisms-underlying-individual-differences-adaptations-exercise-training-jacob-bonafiglia-hashim-islam-nir-eynon-brendon-gurd?context=ubx&refId=0737d7ce-b148-457e-a152-e76cacf4893d