The 1H groups were sacrificed between 9:00 and 11:00 and swimming time was recorded individually for the animals in the EX groups. Time of swimming exhaustion test was defined as the time when the animal remained submersed for approximately 12 s - See more at: http://www.mdpi.com/2072-6643/4/11/1767/htm#sthash.KNNffQgv.dpuf