text: 5. McLeod M, Breen L, Hamilton DL, Philp A. Live strong and prosper: 
  the importance of skeletal muscle strength for healthy ageing. 
  Biogerontology 17: 497–510, 2016. doi:10.1007/s10522-015-9631-7. 
  Kraemer WJ, Caldwell LK, Post EM, DuPont WH, Martini ER, 
  Ratamess NA, Szivak TK, Shurley JP, Beeler MK, Volek JS, Maresh 
  CM, Todd JS, Walrod BJ, Hyde PN, Fairman C, Best TM. Body com- 
  position in elite strongman competitors. J Strength Cond Res 34: 
  3326–3330, 2020. doi:10.1519/jsc.0000000000003763. 
  Abe T, Buckner SL, Dankel SJ, Jessee MB, Mattocks KT, Mouser 
  JG, Loenneke JP. Skeletal muscle mass in human athletes: what is 
  the upper limit? Am J Hum Biol 30: e23102, 2018. doi:10.1002/ 
  ajhb.23102. 
  
  6. 