Table 3.
Comparison of daily oxygen consumption and food hopper visits between +/+ and Afh/Afh mice
| +/+ | Afh/Afh | Significance | |
|---|---|---|---|
| N | 9 | 10 | |
| O2 consumption | |||
| χ2 Periodogram | |||
| % Rhythmic | 100 | 90 | |
| Period (h) | 23.97 ± 0.04 | 24.11 ± 0.16 | n.s. |
| Rhythm strength (%V) | 33.19 ± 3.04 | 32.97 ± 2.77 | n.s. |
| 24 h average | |||
| ZT of peak (h) | 13.72 ± 0.57 | 16.57 ± 0.76 | P= 0.022 |
| Mean (ml kg−1 h−1) | 3053 ± 173 | 2760 ± 169 | n.s. |
| P-T amplitude (ml kg−1 h−1) | 2482 ± 254 | 2278 ± 290 | n.s. |
| Food hopper visits | |||
| χ2 Periodogram | |||
| % Rhythmic | 100 | 70 | |
| Period (h) | 23.95 ± 0.04 | 24.04 ± 0.13 | n.s. |
| Rhythm strength (%V) | 28.36 ± 2.78 | 29.04 ± 2.59 | n.s. |
| 24 h average | |||
| ZT of peak (h) | 14.21 ± 0.68 | 17.02 ± 1.01 | P= 0.016 |
| Mean (counts per 10 min) | 11.39 ± 1.69 | 11.7 ± 2.32 | n.s. |
| P-T amplitude (counts per 10 min) | 43.34 ± 7.74 | 40.2 ± 5.6 | n.s. |
Data are presented as mean ± SEM. Bold, underlined values indicate statistically significant differences between +/+ and Afh/Afh mice (unpaired t test; P < 0.05 required for significance). Only data from animals classified as rhythmic were used in the analysis of 24 h averages. ZT, Zeitgeber time.