M. R. Rahimi, P. Khabiri, and H. Faraji, “Effects of caffeine ingestion on resistance exercise-induced apoptosis in athletes: A randomized, double-blind, placebo-controlled, crossover study”, Progr Nutr, vol. 20, no. 4, pp. 563–569, Jul. 2018, doi: 10.23751/pn.v20i4.6442.