Table 2: Body weight, serum Ca and P, serum PTH, and markers of bone turnover.

YoungAgedTwo-way ANOVA1
ControlHigh PControlHigh P

Initial body weight (g)44.10 ± 0.79A44.20 ± 0.65A52.71 ± 2.17B53.84 ± 2.56BA
Final body weight (g)48.66 ± 1.4346.18 ± 0.6751.47 ± 2.2850.69 ± 2.19
Serum Ca (mg/dL)9.15 ± 0.178.67 ± 0.208.81 ± 0.278.60 ± 0.12
Serum P (mg/dL)9.23 ± 0.419.49 ± 0.479.07 ± 0.689.08 ± 0.60
Serum PTH (pg/mL)52.8 ± 12.5A181.4 ± 33.0B76.7 ± 13.8A306.1 ± 51.1CP, A
Serum OC (ng/mL)26.58 ± 0.83A37.53 ± 2.94B7.31 ± 0.48C13.44 ± 0.78DP, A
Urine CTx (g/mmol creatinine)5.98 ± 0.91A16.73 ± 1.22B5.62 ± 1.02A9.61 ± 1.13CP, A, P × A

The data indicate the mean ± SEM of 6 mice.
The different superscript letters denote significant differences ().
1Significant effect (): P = effect of high P diet; A = effect of age; P × A = effect of interaction.