Comparison between weeks indicated that μRR increased at the start of a music week, compared to the start of a silent week, regardless of whether the music week followed (Group A) or preceded (Group B) the silent week. The difference was statistically significant (P b 0.05) in all except the group A morning recording where a strong trend was noted (P = 0.077). This change in μRR was accompanied by a corre- sponding decrease in μHR, which again did not appear to be influenced by whether the music week preceded or followed the silent week. In this instance, however, statistical significance was only observed within Group A (P = 0.0216) in the afternoon, although a similar trend was seen in the morning in Group B (P = 0.057). Comparison of μRR and
μHR at the end of each treatment week (M2 vs S2) did not reveal any sig- nificant differences.