Effects of 30 d swimming exercise on morphometric cell counts in areas CA1 and CA3 of hippocampus. Morphometric cell counts of the surviving neurons in groups of 4-month-old male Wistar rats exposed to the following conditions: normal control (NC), normal control followed by swimming exercise (NC+EX), sham-operated control followed by swimming exercise (SC+EX), and kainic acid-induced lesioning and seizures (LO) followed by swimming exercise (L+EX) treatments. (a and b) Area CA1 of hippocampus. (c and d) Area CA3 of hippocampus. (a and c) Effects of immediate (1 d postgrouping for controls, 1-day postictal period for lesioned rats) exposure to the swimming exercise. (b and d) Effects of delayed (60 d postgrouping for controls, 60 d postictal period for lesioned rats) exposure to the swimming exercise in areas CA1 and CA3, respectively. Bars represent number of surviving neurons expressed in means ± standard errors. Intergroup differences significant at and . -values for (a–d) 402.4, 201.3, 189.3, and 761.1, respectively.