Table 13.

The mitochondrial membrane potential of human spermatozoa (n = 51) exposed to NTP of varying time intervals.

Δψm [Red/Green Ratio]	0 s	15 s	30 s	60 s	90 s
0 h	3.26 ± 0.30	3.23 ± 0.31	3.20 ± 0.34	3.00 ± 0.28	2.74 ± 0.19 *
2 h	2.39 ± 0.21	2.33 ± 0.17	2.22 ± 0.23	1.56 ± 0.17 *	1.25 ± 0.09 **

Mean ± SEM. * p < 0.05; ** p < 0.01. Lines: times of NTP exposition. Columns: evaluation times.