Increased number of mitochondria leads to the robust ATP synthesis. Moreover, mitiophagy (the autophagy-dependent degradation) is responsible for the building block synthesis.

Mitochondrial volume does correlate with sperm motility.

Check out this old article:

https://academic.oup.com/clinchem/article/44/8/1616/5642898

Dear Amrit Kumar,

I think that the real question of sperm mobility is related to the potential of the inner membrane of mitochondria. The reduction of this potential induces asthenospermia; this is described in many works. However, it is very likely that the length of the inner membrane is strongly related to cell activity. The regionalization of nephrons is a very good example for the study of mitochondria change in relation to cell activity. The paper proposed by Paul Hafen is very interesting because it gives a frontal answer to your question. Thank you Paul Hafen

Best regards,

Rafik

Thank you dear Rafik Menad for your suggestion.