Evaluation of the Efficiency of Two Different Freezing Media and Two Different Protocols to Preserve Human Spermatozoa from Cryoinjury

Table 1

Postthaw viability and progressive motility of semen samples cryopreserved by two different freezing protocols using two different FM.

Variable	⁢Group A (sperm washing protocol)		⁢Group B (direct freezing protocol)		value
	TYB	SF	TYB	SF
Viability (%)	21.20 ± 1	15.62 ± 0.71	27.21 ± 1.69	21.71 ± 1.60	<0.0001	<0.0001	0.006	0.0002
Progressive motility (%)	18.41 ± 1.03	13.99 ± 0.87	16.63 ± 1.67	13.38 ± 1.46	<0.0001	0.005	NS	NS

Note: values are mean ± SEM. TYB, TEST Yolk Buffer; SF, Sperm Freeze.
, paired -test for TYB versus SF in group A.
, paired -test for TYB versus SF in group B.
, unpaired -test for TYB washed versus TYB not washed.
, unpaired -test for SF washed versus SF not washed.