HOFFMAN ESTATES, Ill. — Once again, at long last, Simone Biles strode into an arena Saturday night. She flipped and flew and, perhaps most importantly, twisted. She was dominant, and she smiled. It ...

Correspondence to: Dr Daly, School of Health Sciences, 221 Burwood Highway, Deakin University, Victoria, Australia 3125 rmdaly{at}deakin.edu.au Methods—The relevant literature was identified through ...