Association of Endogenous Seminal L-Carnitine Levels with Post-Thaw Semen Parameters in Humans

Figure 2

Absolute change in sperm motility and seminal sORP levels between post-thaw samples supplemented with L-carnitine and after standard cryopreservation in groups with low and high seminal L-carnitine. Absolute change in sperm motility (a) and seminal sORP levels (b) between post-thaw samples supplemented with L-carnitine and after standard cryopreservation in groups with low LC (≤38.8 µg/ml, n = 63 for motility and n = 62 for seminal sORP) and high LC (>38.8 µg/ml, n = 62 for both) levels. Every point in the jitter plot represents an absolute change. Horizontal lines for each group represent median, while the dotted line at 0 indicates no change. Mann–Whitney U test was used to compare differences between the groups. p values ≤ 0.01 were considered statistically significant. sORP: static oxidation-reduction potential; LC: L-carnitine.

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