Taiwanese professor Huang Tsang-hai made rats swim for an hour a day, five days a week for eight weeks, and then measured and compared their bone mineral density (BMD) and bone mineral content (BMC) with a control group. The swimming rats lost both BMD and BMC, possibly because of weight loss, but when the femurs of the rats were broken, it took longer to completely sever the bones of those in the swimming group than in the control group. Read Focus Taiwan
(River rat, picture courtesy of Karen Morris, CC BY-NC-ND 2.0)
