Nicolas K. Grundmann

Sildenafil improves cardiac output and exercise performance during acute hypoxia, but not normoxia.

Andrew R. Hsu, A. Friedlander, Kimberly E. Barnholt, 2006, Journal of applied physiology.

performance during acute hypoxia, but not normoxia Sildenafil improves cardiac output and exercise

S. Maxwell, C. Lundby, A. Pichon, 2015 .