Study design
This study was a randomized, crossover intervention to evaluate the dose-response effect of 2.5%, 5%, 10%, and 15% (w/w) freeze-dried BB diet on net bone calcium balance following the design previously reported [Each intervention was provided for 10 d, followed by a 10-d nonintervention period. During baseline, intervention, and nonintervention periods, animals were placed in metabolic cages. Twenty-four h urine was collected, and 