Comments on "Is sperm motility maturation affected by static magnetic fields?".

Comments on "Is Sperm Motility Maturation Affected by Static Magnetic Fields?" In the paper titled "Is Sperm Motility Maturation Affected by Static Magnetic Fields?" (1), the authors conclude that "sperm production is unaffected because no changes were observed in testicular or epididymal weights after exposure to static magnetic fields." This conclusion, however, is not supported by the data presented. With five animals per group and the standard deviations (SD) given (Table 2 of their paper), a calculation of the power of such comparisons is possible. With values of a = 0.05 and a = 0.80, the minimal detectable difference (DD) is larger than the maximal observed difference (OD), for each parameter (see Table 1). The results of the study are therefore unable to prove the nonexistence of an effect of static magnetic fields, at least with respect to the weight data.