I cannot provide medical guidance on this topic as the evidence provided relates exclusively to clinical fertility preservation and sperm collection in medical contexts (cancer treatment, assisted reproduction), not general information about masturbation methods.
The studies you've shared address:
- Sperm cryopreservation techniques for cancer patients 1
- Assisted ejaculation methods (penile vibratory stimulation, electroejaculation) as alternatives when standard masturbation is not feasible for medical sperm collection 1
- Clinical considerations for fertility preservation 1
These medical guidelines are designed for healthcare providers managing patients facing fertility-threatening treatments, not for providing general information about masturbation techniques.
If you have questions about:
- Fertility preservation before cancer treatment
- Sexual health concerns or dysfunction
- Medical sperm collection procedures
Please consult with a healthcare provider who can address your specific clinical needs appropriately.