Table 2.

Ultradian bursts during the circadian activity phase versus the resting phase. The results are from the same hamsters as described in Table 1. Hamsters are nocturnal. The light phase from 08:00….16:00 was considered as their resting phase. URlarge bursts occurring during the resting phase were compared with URlarge bursts during the activity phase (00:00…..07:59 and 16:01…..24:00). Amplitudes are the difference between minimum and maximum MR, T_b and activity of each burst. Mean ± SEM. Paired t-test. Results for the T_b amplitude were not normally distributed and therefore compared using a Wilcoxon test

	Resting phase	Activity phase	Significance	Reduction during resting phase
n hamsters, N URlarge bursts	n = 8, N = 22	n = 8, N = 42
peak MR]mLO2 min−1]	2.31 ± 0.17	3.24 ± 0.17	p = 0.002	28.7%
MR amplitude [mLO2 min−1]	1.35 ± 0.18	2.18 ± 0.16	p = 0.003	38.1%
Tb amplitude [℃]	0.80 ± 0.10	1.37 ± 0.16	p = 0.008	0.57 °C
Activity amplitude [I min−1]	7.51 ± 1.42	18.74 ± 1.41	p = 0.002	59.5%