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. 2008 Aug;63(4):545–550. doi: 10.1590/S1807-59322008000400022

Table 1.

Sperm motility grading in this study compared to WHO (1999) recommendation

Parameter Density Values WHO (1999) criterion
1. Grade A 26.40 ± 1.75 % 50% of forward movements (Grade A & B) or 25% or more Grade A for- ward movement within 60 minutes of ejaculations
2. Grade B 41.99 ± 1.98 %
3. Grade C 18.25 ± 0.65 %
4. Grade D 13.35 ± 0.15 %
Motility 2.99 ± 0.49 um/sec or 68.40 ± 0.53% More than 8 um/sec or more than50% motile
Viability 86.53 ± 0.11% More than 75% viable

The grading was done using Weber Sterility chamber under light microscope. Grade A – fast progressive movement; Grade B – slow progressive movement; Grade C – non – progressive movement; Grade D – immotile;

*

motility percentage = Grade A + Grade B;

**

viability percentage = Grade A + Grade B + Grade C.