Relative Pronoun Question

WeirdUserName
Sat, 27 Jun 2015 12:15:50 +0000

In the following sentence, what should ‘‘which’’ be repaced with? The book I use suggests that ‘‘who’’ is correct, but I shouldn’t ‘‘that’’ be correct instead? The subjects can be both human and animal, and since ‘‘who’’ is only used for people, I think it’s not correct.

Researchers have claimed that subjects which stood on a rapidly vibrating platform during an experiment were able to slightly improve their athletic performance for a short time afterward.